2010

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Kallert, D.M., Ponader, S., Adelt, S., Kaese, P., Geyer, R., Haas, W., El-Matbouli, M.
Analysis of rainbow trout Oncorhynchus mykiss epidermal mucus and evaluation of semiochemical activity for polar filament discharge in Myoxobolus cerebralis actinospores.
J Fish Biol 77 1579-1598 (2010)

Lehr T., Frank S., Natsuka S., Geyer H., Beuerlein K., Doenhoff M.J., Hase S., Geyer R.
N-Glycosylation patterns of hemolymph glycoproteins from Biomphalaria glabrata strains expressing different susceptibility to Schistosoma mansoni infection.
Exp Parasitol 126 592-602 (2010)

van Die, I., van Stijn, C. M., Geyer, H., Geyer, R.
Structural and functional analysis of glycosphingolipids of Schistosoma mansoni.
Methods Enzymol 480 117-140 (2010)

Stepan, H., Bleckmann, C., Geyer, H., Geyer, R., Staudacher, E.
Determination of 3-O- and 4-O-methylated monosaccharide constituents in snail glycans.
Carbohydr Res 345 1504-1507 (2010)

Galuska, S. P., Rollenhagen, M., Kaup, M., Eggers, K., Oltmann-Norden, I., Schiff, M., Hartmann, M., Weinhold, B., Hildebrandt, H., Geyer, R., Mühlenhoff, M., Geyer, H.
Synaptic cell adhesion molecule SynCAM 1 is a target for polysialylation in postnatal mouse brain.
Proc Natl Acad Sci U S A 107 10250 - 10255 (2010)

van Stijn, C. M., Meyer, S., van den Broek, M., Bruijns, S. C., van Kooyk, Y., Geyer, R., van Die, I.
Schistosoma mansoni worm glycolipids induce an inflammatory phenotype in human dendritic cells by cooperation of TLR4 and DC-SIGN.
Mol Immunol 47 1544-1552 (2010)

Galuska, S. P., Geyer, H., Weinhold, B., Kontou, M., Rohrich, R. C., Bernard, U., Gerardy-Schahn, R., Reutter, W., Munster-Kuhnel, A., Geyer, R.
Quantification of nucleotide-activated sialic acids by a combination of reduction and fluorescent labeling.
Anal Chem 82 4591-4598 (2010)

Galuska, S. P., Geyer, H., Bleckmann, C., Röhrich, R. C., Maass, K., Bergfeld, A. K., Mühlenhoff, M., Geyer, R.
Mass spectrometric fragmentation analysis of oligosialic and polysialic acids.
Anal Chem 82 2059-2066 (2010)

2009

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Ishibashi Y., Nagamatsu Y., Meyer S., Imamura A., Ishida H., Kiso M., Okino N., Geyer R., Ito M.
Transglycosylation-based fluorescent labeling of 6-gala series glycolipids by endogalactosylceramidase.
Glycobiology 19 797-807 (2009)

Muhl L., Galuska S.P., Oorni K., Hernandez-Ruiz L., Andrei-Selmer L.C., Geyer R., Preissner K.T., Ruiz F.A., Kovanen P.T., Kanse S.M.
High negative charge-to-size ratio in polyphosphates and heparin regulates factor VII-activating protease.
FEBS J. 276 4828-4839 (2009)

Schiller B., Hykollari A., Voglmeir J., Poltl G., Hummel K., Razzazi-Fazeli E., Geyer R., Wilson IB.
Development of Dictyostelium discoideum is associated with alteration of fucosylated N-glycan structures.
Biochem J. 423 41-52 (2009)

von Witzendorff D., Maass K., Pich A., Ebeling S., Kolle S., Kochel C., Ekhlasi-Hundrieser M., Geyer H., Geyer R., Topfer-Petersen E.
Characterization of the acidic N-linked glycans of the zona pellucida of prepuberal pigs by a mass spectrometric approach.
Carbohydr Res. 344 1541-1549 (2009)

Bleckmann, C., Geyer, H., Lieberoth, A., Splittstoesser, F., Liu, Y., Feizi, T., Schachner, M., Kleene, R., Reinhold, V., and Geyer R.
O-Glycosylation Pattern of CD24 from Mouse Brain.
Biol. Chem. 390,627-645 (2009)

Bleckmann, C., Geyer, H., Reinhold, V., Lieberoth, A., Schachner, M., Kleene, R., and Geyer R.
Glycomic Analysis of N-Linked Carbohydrate Epitopes from CD24 of Mouse Brain.
J. Proteome Res. 8,567-582 (2009)

2008

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Yu, Y., Singh, U., Shi, W., Konno, T., Soares, M. J., Geyer, R., and Fundele, R.
Influence of murine maternal diabetes on placental morphology, gene expression, and function.
Arch. Physiol. Biochem. 114, 99-110 (2008)

Tian, G., Singh, U., Yu, Y., Ellsworth, B. S., Hemberger, M., Geyer, R., Stewart, M. D., Behringer, R. R., and Fundele, R.
Expression and function of the LIM homeobox containing genes Lhx3 and Lhx4 in the mouse placenta.
Dev. Dyn. 237, 1517-1525 (2008)

Rode, B., Endres, C., Ran, C., Stahl, F., Beutel, S., Kasper, C., Galuska, S., Geyer, R., Muhlenhoff, M., Gerardy-Schahn, R., and Scheper, T.
Large-scale production and homogenous purification of long chain polysialic acids from E. coli K1.
J. Biotechnol. 135(2), 202-209 (2008)

Lehr, T., Beuerlein, K., Doenhoff, M. J., Grevelding, C. G., and Geyer, R.
Localization of carbohydrate determinants common to Biomphalaria glabrata as well as to sporocysts and miracidia of Schistosoma mansoni.
Parasitology. 135, 931-942 (2008)

Grabitzki, J., Ahrend, M., Schachter, H., Geyer, R., and Lochnit, G.
The PCome of Caenorhabditis elegans as a prototypic model system for parasitic nematodes: Identification of phosphorylcholine-substituted proteins.
Mol Biochem Parasitol. PMID: 18652849 , (2008)

Ceroni, A., Maass, K., Geyer, H., Geyer, R., Dell, A., and Haslam, S. M.
GlycoWorkbench: A Tool for the Computer-Assisted Annotation of Mass Spectra of Glycans.
J Proteome Res. 7, 1650-1659 (2008)

Oltmann-Nordon, I., Galuska, S.P., Hildebrandt, H., Geyer, R., Gerardy-Schahn, R., Geyer, H. and Mühlenhoff, M.
Impact of the polysialyltransferases ST8SiaII and ST8SiaIV on polysialic acid synthesis during postnatal mouse brain development
J. Biol. Chem. 283, 1463-1471 (2008)

Galuska, S.P., Geyer, R., Gerardy-Schahn, R., Mühlenhoff, M., and Geyer, H.
Enzyme-dependent variations in the polysialylation of the neural cell adhesion molecule NCAM in vivo.
J. Biol. Chem. 283 17-28 (2008)

2007

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Meyer S., Tefsen B., Imberty A., Geyer R., van Die I.
The C-type lectin L-SIGN differentially recognizes glycan antigens on egg glycosphingolipids and soluble egg glycoproteins from Schistosoma mansoni.
Glycobiology17, 1104-1119 (2007)

Galuska, S.P., Geyer, Muhlenhoff, M., and Geyer, H.
Characterization of Oligo- and Polysialic Acida by MALDI-TOF-MS
Anal. Chem. 79, 7161-7169 (2007)

Maass, K., Ranzinger, R., Geyer, H., von der Lieth, C., and Geyer, R.
"Glyco-Peakfinder" - De Novo Composition Analysis of Glycoconjugates
Proteomics 7, 4435-4444 (2007)

Debierre-Grockiego, F., Rabi, K., Schmidt, J., Geyer, H., Geyer, R., Schwarz, R.T.
Fatty acids isolated from Toxoplasma gondii reduce GPI-induced TNF{alpha} production through inhibition of NF-{kappa}B signaling pathway.
Infect. Immun. 75, 2886-2893 (2007)

Robijn, M.L., Koeleman, C.A., Wuhrer, M., Royle, L., Geyer, R., Dwek, R.A., Rudd, P.M., Deelder, A.M., Hokke, C.H.
Targeted identification of a unique glycan epitope of Schistosoma mansoni egg antigens using a diagnostic antibody.
Mol Biochem Parasitol. 151, 148-161 (2007)

Wada, Y., Azadi, P, Costello, C.E., Dell, A., Dwek, R.A., Geyer, H., Geyer, R., Kakehi, K., Karlsson, N.G., Kato, K., Kawasaki, N., Khoo, K.H., Kim, S., Kondo, A., Lattova, E., Mechref, Y., Miyoshi, E., Nakamura, K., Narimatsu, H., Novotny, M.V., Packer, N.H., Perreault, H., Peter-Katalinic, J., Pohlentz, G., Reinhold, V.N., Rudd, P.M., Suzuki, A., Taniguchi, N.
Comparison of the methods for profiling glycoprotein glycans--HUPO Human Disease Glycomics/Proteome Initiative multi-institutional study.
Glycobiology. 17, 411-422 (2007)

Lehr, T., Geyer, H., Maass, K., Doenhoff, M. J., Geyer, R.
Structural characterization of N-glycans from the freshwater snail Biomphalaria glabrata cross-reacting with Schistosoma mansoni glycoconjugates.
Glycobiology. 17, 82-103 (2007)

2006

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Geyer, H., Geyer, R.
Strategies for analysis of glycoprotein glycosylation.
Biochim. Biophys. Acta - Proteins and Proteomics 1764, 1853-1869 (2006)

van Liempt, E., Bank, C.M.C., Mehta, P., Garcia-VAllejo, J.J., Kawar, Z.S., Geyer, R., Alvarez, R.A., Cummings, R.D., van Kooyk, Y., and van Die, I.
Specificity of DC-SIGN for mannose- und fucose-containing glycans.
FEBS Lett. 580, 6123-6131 (2006)

Lochnit, G., Grabitzki, J., Henkel, B., Tavernarakis, N., and Geyer, R.
First identification of a phosphorylcholine-substituted protein from Caenorhabditis elegans. Isolation and characterization of the asparatyl protease ASP-6.
Biol Chem. 387, 1487-1493 (2006)

Galuska, S. P., Oltmann-Norden, I., Geyer, H., Weinhold, B., Kuchelmeister, K., Hildebrandt, H., Gerardy-Schahn, R., Geyer, R., Muhlenhoff, M.
Polysialic Acid Profiles of Mice Expressing Variant Allelic Combinations of the Polysialyltransferases ST8SiaII and ST8SiaIV.
J Biol Chem. 281, 31605-31615 (2006)

Egan, C.A., Houston, K.M., Solovyova, A., Tate, R., Lochnit, G., McInnes, I.B., Harnett, M.M., Geyer, R., Byron, O., Harnett, W.
Lack of immunological cross-reactivity between parasite-derived and recombinant forms of ES-62, a secreted protein of Acanthocheilonema viteae.
Parasitology 132, 1-12 (2006)

Kean, D.E., Ohtsuka, I., Sato, K., Hada, N., Takeda, T., Lochnit, G., Geyer, R., Harnett, M.M., Harnett, W.
Dissecting Ascaris glycosphingolipids for immunomodulatory moieties - the use of synthetic structural glycosphingolipid analogues.
Parasite Immunol. 28, 69-76 (2006)

2005

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Geyer, H., Wuhrer, M., Resemann, A., Geyer, R.
Identification and characterization of keyhole limpet hemocyanin N-glycans mediating cross-reactivity with Shistosoma mansoni.
J. Biol. Chem. 280, 40731-40848 (2005)

Grabitzki, J., Sauerland, V., Geyer, R., Lochnit, G.
Identification of phosphorylcholine substituted peptides by their characteristic mass spectromic fragmentation.
Eur. J. Mass. Spectrom. 11, 334-335 (2005)

Lochnit, G., Bongaarts, R., Geyer, R.
Searching new targets for anthelminthic strategies: Interference with glycosphingolipid biosynthesis and phosphorylcholine metabolism affects development of Caenorhabditis elegans.
Int. J. Parasitol. 35, 911-923 (2005)

Meyer, S., van Liempt, E., Imberty, A., van Kooyk, Y., Geyer, H., Geyer, R., van Die I.
DC-SIGNS mediates binding of dendritic cells to authentic pseudo-lewis Y glycolipids of  Schistosoma mansoni cercariae, the first parasite-specific ligand of DC-SIGN.
J. Biol. Chem. 280, 37349-37359 (2005)

Pingoud, V., Geyer, H., Geyer, R., Kubavera, E., Bujnicki, J., Pingoud, A.
Identification of base-specific contacts in protein-DNA complexes by photocrosslinking and mass spectrometry: a case study using restriction endonuclease Ssoll.
Molecular BioSystems 1, 135-141 (2005)

Pingoud, V., Sudina, A., Geyer, H., Bujnicki, J.M., Lurz, R., Luder, G., Morgan, R., Kubareva, E., Pindoug, S.
Specific changes in the evolution of type II restriction endonucleases: a biochemical and bioinformatic analysis of restriction enzymes that recognize unrelated sequences.
J. Biol. Chem. 280, 4289-4298 (2005)

Robijn, M.L., Wuhrer, M., Kornelis, D., Deelder, A.M., Geyer, R., and Hokke, Ch.
Mapping fucosylated epitopes on glycoproteins and glycolipids of Schistosoma mansoni cercariae, adult worms and eggs.
Parasitology 130, 67-77 (2005)

Sandhoff, R., Geyer, R., Jennemann, R., Paret, C., Kiss, E., Yamashita, T., Gorgas, K., Sijmonsma, T.P., Iwamori, M., Finaz, C., Proja, R.L., Wiegandt, H., Grone, H.J.
Novel class of glycosphingolipids involved in male fertility.
J. Biol. Chem. 280, 27310-27318 (2005)

Sasaki, A., Ishimizu, T., Geyer, R., and Hase, S.
Synthesis of beta-mannosides using the transglycosylation activity of endo-beta-mannosidase from Lilium longiflorum.
FEBS Journal 272, 1660-1668 (2005).

Yamashita, T., Wu, Y.P., Sandhoff, R., Werth, N., Mizukami, H., Ellis, J.M., Dupree, J.L., Geyer, R., Sandhoff, K., and Proia, R.L.
Interruption of ganglioside synthesis produces central nervous system degeneration and altered axonglial interactions.
Proc. Natl. Acad. Sci. USA 102 , 2725-2730 (2005)

2004

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Geyer, H., Geyer, R., and Pingoud, V.
A novel strategy for the identification of protein-DNA contacts by photocrosslinking and mass spectrometry.
Nucl. Acids Res. 32, e 132 (2004)

Geyer, H., Wuhrer, M., Kurokawa, T., and Geyer, R.
Characterization of keyhole limpet hemocyanin (KLH) glycans sharing a carbohydrate epitope with Schistosoma mansoni glycoconjugates.
Micron., 35, 105-106 (2004).

Lochnit, G., and Geyer, R.
An optimised protocol for nano-LC-MALDI-TOF-MS coupling for the analysis of proteolytic digests of glycoproteins.
Biomed. Chromatogr. 18, 841-848 (2004).

Lochnit, G., Liedtke, S., and Geyer, R.
Warum NanoLC mit MALDI/TOF/MS-Kopplung?
LaborPraxis 28, 26-27 (2004).

Robijn, M.L., Wuhrer, M., Kornelius, D., Deelder, A.M., Geyer, R., and Hokke, C.H.
Mapping fucosylated epitopes on glycoproteins and glycolipids of Schistosoma mansoni cercariae, adult worms and eggs.
Parasitology 130, 67-77 (2004)

Schmitt, S., Glebe, D., Tolle, T.K., Lochnit, G., Linder, D., Geyer, R., and Gerlich, W.H.
Structure of the preS2N-and O-linked glycany in the M surface protein in different genotypes from human hepatitis B virus.
J. Gen. Virol. 85, 2045-2053 (2004).

Wuhrer, M., Grimm, C., Dennis, R. D., Idris, M. A., and Geyer, R.
The parasitic trematode Facsiola hepatica exhibits mammalian-type glycolipids as well as Gal(β1-6)Gal-terminating glycolipids that account for cestode serological cross-reactivity.
Glycobiology 14, 115-126 (2004).

Wuhrer, M., Robijn, M.L.M., Koeleman, C.A.M., Balog, C.I.A., Geyer, R., Deelder, A.M., and Hokke, C.H.
A novel Gal(ß1-4)Gal(ß1-4)Fuc(a1-6)-core modification attached to the proximal N-acetylglucosamine of keyhole limped hemocyanin (KLH) N-glycans.
Biochem. J. 378, 625-632 (2004)

2003

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Debierre-Grockiego, F., Azzouz, N., Schmidt, J., Dubremetz, J.F., Geyer, H., Geyer, R., Weingart, R., Schmidt, R.R. and Schwarz, R.T.
Roles of glycosylphosphatidylinositols of Toxoplasma gondii. Induction of tumor necrosis factor-alpha production in macrophages.
J. Biol. Chem. 278, 32987-32993 (2003)

Friedl, C.H., Lochnit, G., Zahringer, U., Bahr, U. and Geyer, R.
Structural eluxidation of zwitterionic carbohydrates derived from glycosphingolipids of the porcine parasitic nematode Ascaris suum.
Biochem. J. 369, 89-102 (2003)

Lochnit, G., and Geyer, R.
Evidence for the presence of the Kennedy and Bremer- Greenberg pathways in Caenorhabditis elegans.
Acta Biochim. Pol . 50, 1239-1243 (2003).

Wilhelm, B., Geyer, H., Geyer, R., Schwaeble, W., Linder, M., Linder, D., Aumüller, G., and Seitzet, J.
Molecular comparison of apocrine released and cytoplasmic resident carbonic anhydrase II.
Biochimie 85, 939-946 (2003).

Wuhrer, M., Geyer, H., von der Ohe, M., Gerardy-Schahn, R., Schachner, M., and Geyer, R.
Localization of defined carbohydrate epitopes in bovine polysialylated NCAM.
Biochimie 85, 207-218 (2003)

Wuhrer, M., Grimm, C., Zahringer, U., Dennis, R.D., Berkefeld, C.M., Idris, M.A., and Geyer, R.
A novel GlcNAcalpha1-HPO3-6Gal(1-1)ceramide antigen and alkylated inositol-phosphoglycerolipids expressed by the liver fluke Fasciola hepatica.
Glycobiology 13, 129-137 (2003)

2002

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Hülsmeier, A.J., Gehring, P.M., Geyer, R., Sack, R., Gottstein, Bl, Deplazes, P., and Köhler, P.
A major Echinococcus multiocularis antigen is a mucin-type glycoprotein.
J. Biol. Chem. 277, 5742-5748 (2002)

Kantelhardt, S.R., Wuhrer, M., Dennis, R.D., Doehnhoff, M.J., Bickle, Q., and Geyer, R.
Fuc(alpha 1->3)GalNAc-: major antigenic motif of Schistosoma mansoni glycolipids implicated in infection sera and keyhole limped hemocyanin cross-activity.
Biochem. J. 366 , 217-223 (2002)

Sandhoff, R., Hepbildikler, S.T., Jennemann, R., Geyer, R., Gieselmann, B., Proia, R.L., Wiegand, H., and Grone, H.J.
Kidney sulfatides in mouse models of inherited glycosphingolipid disorders - determination by Nano-electrospray Ionization tandem mass spectrometry.
J. Biol. Chem. 277, 20386-20398 (2002)

von der Ohe, M., Wheeler, S.F., Wuhrer, M., Harvey, D.J., Liedtke, S., Muhlenhoff, M., Gerardy-Schahn, R., Geyer, H., Dwek, R.A., Geyer, R., Wing, D.R., Schachner, M.
Localization and characterization of polysialic acid-containing N-linked glycans from bovine NCAM.
Glycobiology 12, 47-63 (2002)

Wuhrer, M., Kantelhardt, S.R., Dennis, R.D., Doenhoff, M.J., Lochnit, G., and Geyer, R.
Characterization of glycosphingolipids from Schistosoma mansoni eggs carrying Fuc(alpha1-1-3)GalNAc-, GalNAc(beta1-4)[Fuc(alpha1-3]GlcNAc- and Gal(beta1-4)[Fuc(alpha1-3]GlcNAc- (Lewis X) terminal structures.
Eur. J. Biochem. 269, 481-493 (2002)

Hirzmann, J., Hintz, M., Kasper, M., Shresta, T.R., Taubert, A., Conraths, F.J., Geyer, R., Stirm, S., Zahner, H., and Hobom, G.
Cloning and Expression Analysis of Two Mucin-like Genes Encoding Microfilarial Sheath Surface Proteins of the Parasitic Nematodes Brugia and Litomosoides.
J. Biol. Chem. 277, 47603-47612 (2002)

Houston, K., Lochnit, G., Geyer, R., and Harnett, W.
Investigation of the nature of potential phosphorylcholine donors for filarial nematode glycoconjugates.
Mol. Biochem. Parasitol. 123, 55-66 (2002)

Kurokawa, T., Wuhrer, M., Lochnit, G., Geyer, H., Markl, J., and Geyer, R.
Hemocyanin from the keyhole limpet Megathura crenulata (KLH) carries a novel type of N-glycans with Gal(ß1-6)Man-motifs.
Eur. J. Biochem. 269, 5459-5473 (2002)

Schmitt, J., Wuhrer, M., Hamburger, J., Jourdane, J., Ramzy, R. M., Geyer, R., and Ruppel., A.
Schistosoma mansoni and Schistosoma haematobium: identification and characterization of glycoconjugate antigens in the hemolymph of infected vector snails.
J. Parasitol. 88, 505-513 (2002)

Stamm, I., M. Wuhrer, R. Geyer, G. Baljer and C. Menge.
Bovine lymphocytes express functional receptors for Escherichia coli Shiga toxin 1.
Microb. Pathog. 33, 251-264 (2002)

2001

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Geyer, H., Bahr, U., Liedtke, S., Schachner, M., and Geyer, R.
Core structures of polysialylated glycans present in neural cell adhesion molecule from newborn mouse brain.
Eur. J. Biochem. 268, 6587-6599 (2001)

Hossain, H., Wellensiek, H.-J., Geyer, R., and Lochnit, G.
Structural analysis of lipids from Borrelia burgdorferi.
Biochimie 83, 683-692 (2001)

Jennemann, R., Geyer, R., Sandhoff, R., Gschwind, R.M., Levery, S.B., Gröne, H.-J., and Wiegandt, H.
Glycoinositolphosphospingolipids (basidiolipids) of hogher mushrooms.
Eur. J. Biochem. 286, 1190-1205 (2001)

Liedtke, S., Geyer, H., Wuhrer, M., Geyer, R., Frank, G., Gerardy-Schahn, R., Zähringer, U., and Schachner, M.
Localization and characterization of N-glycans from mouse brain N-CAM.
Glycobiology 11, 373-384 (2001)

Lochnit, G., Dennis, R.D., Müntefehr, H., Nispel, S., and Geyer, R.
Immunohistochemical localisation and differentiation of phosphocholine-containing antigens of the porcine, parasitic nematode, Ascaris suum.
Parasitology 122, 359-370 (2001)

Menge, C., Stamm, I., Wuhrer, M., Geyer, R., Wieler, L.H., and Baljer, G.
Globotriaosylceramide (Gb3/CD77) is synthesized and surface expressed by bovine lymphocytes upon activation in vitro.
Vet. Immunol. Immunop. 83, 19-36 (2001)

Orberger, G., Fuchs, H., Schüler, J., Geyer, R., Geßner, R., Köttgen, E., and Tauber, R.
Structural and functional stability of the mature transferring Receptor from human placenta.
Arch. Biochem. Biophys. 386, 79-88 (2001)

Wuhrer, M., Berkefeld, C., Dennis, R. D., Idris, M.A., and Geyer, R.
Liver flukes Fasciola gigantica and Fasciola hepatica express the leukocyte cluster of differentiation marker CD77 (globotriaosylceramide) in their tugement.
Biol. Chem. 382, 195-207 (2001)

Zinecker, C.R., Striepen, B., Geyer, H., Geyer, R., Dubremetz, J.F., and Schwarz, R.T.
Two glycoforms are present in the GPI-membrane anchor of the surface antigen 1 (P30) of Toxoplasma gondii.
Mol. Biochem. Parasitol. 116, 127-135 (2001)

2000

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Beermann, C., Lochnit, G., Geyer, R., Groscurth, P., and Filgueira, L.
The lipid component of lipoproteins from Borrelia burgdorferi: structural analysis, antigenicity, and presentation via human dendritic cells.
Biochem. Biophys. Res. Commun. 267, 897-905 (2000).

Friedl, C. H., Lochnit, G., Geyer, R., Karas, M., and Bahr, U.
Structural elucidation of zwitterionic sugar cores from glycosphingolipids by nanoelectrospray ionization-ion-trap mass spectrometry.
Anal. Biochem. 284, 279-87 (2000).

Liu, Q., Hintz, M., Li, J., Linder, M., Geyer, R., and Hobom, G.
Recombinant expression and modification analysis of protein agno-1b encoded by avian polyomavirus BFDV.
Arch. Virol. 145, 1211-23 (2000).

Lochnit, G., Dennis, R. D., and Geyer, R.
Phosphorylcholine substituents in nematodes: structures, occurrence and biological implications.
Biol. Chem. 381, 839-47 (2000).

Wuhrer, M., Dennis, R. D., Doenhoff, M. J., and Geyer, R.
Stage-associated expression of ceramide structures in glycosphingolipids from the human trematode parasite Schistosoma mansoni.
Biochim. Biophys. Acta 1524, 155-61. (2000).

Wuhrer, M., Dennis, R. D., Doenhoff, M. J., and Geyer, R.
A fucose-containing epitope is shared by keyhole limpet haemocyanin and Schistosoma mansoni glycosphingolipids.
Mol. Biochem. Parasitol. 110, 237-246 (2000).

Wuhrer, M., Rickhoff, S., Dennis, R.D., Lochnit, G., Sobaslay, P.T., Baumeister S., and Geyer, R.
Phosphocholine-containing, zwitterionic glycosphingolipids of adult Onchocerca volvulus as highly conserved antigenic structures of parasitic nematodes.
Biochem. J. 348 Pt 2, 417-23 (2000).

Wuhrer, M., Dennis, R.D., Doenhoff, M.J., Lochnit, G., and Geyer, R.
Schistosoma mansoni cercarial glycolipids are dominated by Lewis X and pseudo-Lewis Y structures.
Glycobiology 10, 89-101 (2000).

1999

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Geyer, H., Schmitt, S., Wuhrer, M., and Geyer, R.
Structural analysis of glycoconjugates by on-target enzymatic digestion and MALDI-TOF-MS.
Anal. Chem. 71, 476-482 (1999)

Schmitt,S., Glebe, D., Alving, K., Tolle, T.K., Linder., M., Geyer, H., Linder, D., Peter-Katalinic, J., Gerlich, W.H., and Geyer, R.
Analysis of the preS2 N- and O-linked glycans of the M surface protein from human hepatitis B virus.
J. Biol. Chem. 274, 11945-11957 (1999)

Witt, T., Jürgens, A., Geyer, R., and Gottsberger, G.
Sugar composition and nectar dynamics in flowers Silene and Saponaria (Caryophyllaceae).
Plant Biol. 1, 334-345 (1999)

Geyer, H., Geyer, R., Odenthal-Schnittler, M., and Schnittler, H.J.
Characterization of human vascular endothelial cadherin glycans.
Glycobiology 9, 915-925 (1999)

Wuhrer, M., Dennis, R.D., Doenhoff, M.J., Bickle, Q., Lochnit, G., and Geyer, R.
Immunochemical characterisation of Schistosoma mansoni glycolipid antigens.
Mol. Biochem. Parasitol. 103, 155-169 (1999)

Gerdt, S., Dennis, R.D., Bergonie, G., Schnabel, R., and Geyer, R.
Isolation, characterization and immunolocalization of phosphorylcholine-substituted glycolipids in developmental stages of Caenorhabditis elegans.
Eur. J. Biochem. 266, 952-963 (1999)

1998

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Lochnit, G., Dennis, R. D., Ulmer, A.J., and Geyer, R.
Structural elucidation and monkine-inducing activity of two biologically active zwitterionic glycosphingolipids derived from the porcine parasitic nematode Ascaris suum.
J. Biol. Chem. 278, 466-474 (1998)

Lochnit, G., Nispel, S., Dennis, R.D., and Geyer, R.
Structural analysis and immunohistochemical localisation of two acidic glycosphingolipids from the procine, parasitic nematode, Ascaris suum.
Glycobiology 8, 891-899 (1998)

Hintz, M., Schares, G., Taubert, A., Geyer, R., Zahner, H., Stirm, S., and Conraths, F.J.
Juvenile female Litomosoides sigmodontis produce an excretory/secretory antigen (Juv-p120) highly modified with dimethylaminoethanol.
Parasitology 117, 265-271 (1998)

Tolle, T.K., Glebe, D., Linder, M., Linder, D., Schmitt, S., Geyer, R., and Gerlich, W.H.
Structure and glycosylation patterns of surface proteins from woodchuck hepatitis virus.
J. Virol. 72, 9978-9985 (1998)

1997

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Gerdt, S., Lochnit, G., Dennis, R. D., and Geyer, R.
Isolation and structural analysis of three neutral glycosphingolipids from a mixed population of Caenorhabditis elegans (Nematoda: Rhabditida).
Glycobiology 7, 265-275 (1997)

Lochnit, G., Dennis, R. D., Zähringer, U., and Geyer, R.
Structural analysis of neutral glycosphingolipids from Ascaris suum adults (Nematoda: Ascaridida).
Glycoconjugate J. 14, 389-399 (1997)

Weltring, K.-M., Wessels, J., and Geyer, R.
Metabolism of the potato saponins a-chaconine and a-solanine by Gibberella pulicaris.
Phytochemistry 46, 1005-1009 (1997)

Liedtke, S., Geyer, R., and Geyer, H.
Host-cell-specific glycosylation of HIV-2 envelope glycoprotein.
Glycoconjugate J. 14, 785-793 (1997)

1996

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Wagner, R., Liedtke, S., Kretzschmar, E., Geyer, H., Geyer, R., and Klenk, H. D.
Elongation of the N-glycans of fowl plague virus hemagglutinin expressed in Spodoptera frugiperda (Sf9) - cells by coexpression of human ß1,2-N-acetylglucosaminyltransferase I.
Glycobiology 6, 165-175 (1996)

Hintz, M., Kasper, M., Stahl, B., Geyer, R., Kalinowski, H.-O., Karas, M., Kühnhardt, S., Schott, H.-H., Conraths, F., Zahner, H., and Stirm, S.
Dimethylaminoethanol is an essential component of the Litomosoides carinii microfilarial sheath.
Mol. Biochem. Parasitol. 76, 325-328 (1996)

Geyer, H., Jacobi, I., Linder, D., Stirm, S., Bialojan, S., Strube K.-H., and Geyer, R.
Glycosylation of recombinant ancrod from Agkistrodon rhodostoma after expression in mouse epithelial cells.
Eur. J. Biochem. 237, 113-127 (1996)

Wagner, R., Geyer, H., Geyer, R., and Klenk, H.-D.
N-Acetyl-ß-glucosaminidase accounts for differences in glycosylation of Influenza virus hemagglutinin expressed in insect cells from a baculovirus vector.
J. Virol. 70, 4103-4109 (1996)

Gerold, P., Striepen, B., Reitter, B., Geyer, H., Geyer, R., Reinwald, E., Risse, H.-J., and Schwarz, R. T.
Glycosyl-phosphatidylinositols of Trypanosoma congolense: two common precursors but a new protein-anchor.
J. Mol. Biol. 261, 181-194 (1996)

Linn, T., Geyer, R., Prassek, S., and Laube, H.
Effect of dietary protein intake on insulin secretion and glucose metabolism in insulin-dependent diabetes mellitus.
J. Clin. Endocrinol. Metab. 81, 3938-3943 (1996)

1995

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Lochnit, G., and Geyer, R.
Carbohydrate structure analysis of batroxobin, a thrombin-like serine protease from Bothrops moojeni venom.
Eur. J. Biochem. 228, 805-816 (1995)

Kuhns, W., Jain, R. K., Matta, K. L., Paulsen, H., Baker, M. A., Geyer, R., and Brockhausen, I.
Characterization of a novel mucin sulphotransferase activity synthesizing sulphated O-glycan core 1, 3-sulphate-Galß1-3GalNAca-R.
Glycobiology 5, 689-697 (1995)

Hensel, J., Hintz,M., Karas, M., Linder, D., Stahl, B., and Geyer, R.
Localization of the palmitoylation site in the transmembrane protein p12E of Friend murine leukaemia virus.
Eur. J. Biochem. 232, 373-380 (1995)

Publications in books

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Bleckmann, C., Geyer, H., Geyer, R.

Nanoelectrospray-MSⁿ of native and permethylated glycans. In Nanoproteomics. Toms, S. A., Weil, R., Eds.; Humana Press: Totowa, New Jersey,  Vol. 790, 71-85 (2011)

Dennis, R., Geyer, H., and Geyer, R.

Glycoconjugates of Parasitic Helminth Infections. In Kamerling, J.P. (ed), Comprehensive Glycoscience. Elsevier, Amsterdam, pp. 473-494 (2007)

Wuhrer, M., and Geyer, R.
Glycoconjugate Structures.
In PARASIRIC FLATWORMS - Molecular Biology, Biochemistry, Immunology and Parasitology (Male, A., ed.), CAB International, Wallingford, UK, pp. 408-422 (2006)

Lochnit, G., Geyer, R., Heinz, E., Rietschel, E.T., Zähringer, U., and Müthing, J.
Glycolipids: Chemical Biology and Biomedicine (Significance and Function).
In Glycoscience: Chemistry and Biological Chemistry (B. Fraser-Reid, K. Tatsuta, and J. Thiem, eds.), Springer-Verlag, Heidelberg, Germany, pp. 2183-2252 (2001)

Geyer, H., and Geyer, R.
Glycobiology of Viruses.
In Carbohydrates in Chemistry and Biology (B. Ernst, G.W. Hart, and P. Sinay, eds)., Part II: Biology of Saccharides, Vol. 4: Lectins and Saccharide Biology, Wiley-VCH-Weinheim, pp. 821-838 (2001)

Geyer, H. and Geyer, R.
"Strategies for glycoconjugate analysis."
Acta Anat., 161, 18-35 (1998)

Geyer, R. and Geyer, H.
Methylation analysis and other tools for saccharide linkage analysis.
Methods Enzymol. 230, 86-108 (1994)

Geyer, R. and Geyer, H.
Isolation and fractionation of glycoprotein glycans in small amounts.
in Glycoprotein Analysis in Biomedicine; (E.F. Hounsell, ed.), Methods in Molecular Biology, Vol. 14, pp 131-142, Humana Press Inc., Totowa, New Jersey (1993)

Geyer, H. and Geyer, R.
Isolation of glycopeptides of the envelope glycoprotein from a polytropic murine retrovirus.
in: Protein Glycosylation: Cellular, Biotechnological and Analytical Aspects (Conradt, H.S., ed.), GBF Monographs 15, pp 39-48, VCH Publishers Weinheim, New York, Cambridge (1991)

Klenk, H.-D., Kuroda, K., Gröner, A., Doerfler, W., Geyer, H., and Geyer, R.
Glycosylation of the Influenza virus hemagglutinin in insect cells.
in: Protein Glycosylation: Cellular, Biotechnological and Analytical Aspects (Conradt, H.S., ed.).GBF Monographs 15, pp 91-104, CH Publishers Weinheim, New York, Cambridge (1991)

Dennis, R.D., Geyer, R., Egge, H., Peter-Katalinic, J., Keller, M., Menges, H., and Wiegandt, H.
Insects: Animals without gangliosides - Preliminary data.
in: Gangliosides and modulation of neuronal functions (H. Rahmann, ed.), NATO ASI Series H7, Springer Verlag, Berlin, Heidelberg, pp 351-358 (1987)

Herrler, G., Geyer, R., Stirm, S., and Klenk, H.-D.
Inhibition with rat a1-macroglobulin of haemagglutination by influenza C virus.
Vaccine 3, 205-206 (1985)

Conradt, H.S., Geyer, R., Mohr, H., Mühlradt, P.F., Plessing, A., and Stirm, S.
Biochemical characterization (partial amino acid sequence and carbohydrate structure) of interleukin-2 from human peripheral blood lymphocytes.
in: Cellular and molecular biology of lymphokines (C. Sorg and A. Schimpl, eds.), Acad. Press, New York, pp 121-126 (1985)

Niemann, H., Heisterberg-Moutsis, G., Geyer, R., Klenk, H.-D., and Wirth, M.
Glycoprotein E1 of MHV-A59: Structure of the O-linked carbohydrates and construction of full length recombinant cDNA clones.
Adv. Exp. Med. Biol. 173, 201-213 (1984)

Keil, W., Geyer, R., Niemann, H., Dabrowski, J., and Klenk, H.-D.
The carbohydrates of the hemagglutinin of influenza virus.
in: Segmented negative strand viruses (R.W. Compans and D.M.L. Bishop, eds.), Acad. Press, New York, pp 289-298 (1984)

Klenk, H.-D., Keil, W., Niemann, H., Geyer, R., Schwarz, R.T.
The characterization of influenza A viruses by carbohydrate analysis.
Curr. Top. Microbiol. Immunol. 104, 247-257 (1983)