ORGANIZING COMMITTEE, ACKNOWLEDGEMENTS, PREFACE. STRUCTURE, PHYSICAL AND CHEMICAL PROPERTIES OF XYLANS Chemical structure of xylans and their interaction in the plant cell walls (J.P. Joseleau, J. Comtat, K. Ruel). A 1H-NMR spectroscopic study on oligosaccharides obtained from wheat arabinoxylans (J.F.G. Vliegenthart, R.A. Hoffmann, J.P. Kamerling). Three-dimensional structure, interactions and properties of xylans (E.D.T. Atkins). Characterization of cereal arabinoxylans (A.G.J. Voragen, H. Gruppen, M.A. Verbruggen, R.J. Vietor). IDENTIFICATION, MODE OF ACTION AND CHEMICAL PROPERTIES OF XYLANS Catalytic strategies in the enzymic hydrolysis of equatorial pyranosidic linkages (M.L. Sinnott). Identification and mode of action of endo (1- 4) -sz-xylanases (P. Biely, M. Vrsansk#, S. Kuc#r). Analysis of hemicellulase sequences. Relationships to other glycanases (B. Henrissat). Towards an understanding of the mechanism of action of xylan main chain-hydrolyzing xylanases (M.P. Coughlan). Mode of action of the xylan-degrading enzymes from Aspergillus awamori (F.J.M. Kormelink et al.). Amino acid sequence of the low-molecular weight xylanase from Trichoderma viride (M. Yaguchi et al.). Collaborative testing of a xylanase assay method (M.J. Bailey, K. Poutanen). Measurement of endo-1,4-sz-D xylanase (B.V. McCleary). Trichoderma xylanases. Their properties and application (K.K.Y. Wong, J.N. Saddler). Xylan-degrading enzyme systems of the fungi Aspergillus awamori and Penicillium pinophilum: studies on the isolation of over-producing mutant strains and aspects of the enzymology (T.M. Wood et al.). ACCESSORY ENZYMES IN XYLAN DEGRADATION. Significance of esterases in the degradation of xylans (M. Tenkanen, K. Poutanen). alpha-Glucuronidases in the hydrolysis of wood xylans (J. Puls). MOLECULAR GENETICS AND REGULATION OF XYLANASE BIOSYNTHESIS IN MICROBIAL SYSTEMS. Xylanases from Streptomyces cyaneus (P. Wang et al). Structure and regulation of an Aspergillus xylanase gene (L.H. de Graaff et al.). Secretion of a xylanase from Cryptococcus albidus by Saccharomyces cerevisiae and Pichia stipitis (R. Morosoli et al.). The molecular architecture of xylanases from Pseudomonas fluorescens subsp. cellulosa (G.P. Hazlewood, H.J. Gilbert). Molecular biology and physiological biochemistry of xylan degradation by thermoanaerobes (Y.-E. Lee et al.). S.E. Lowe, J.G. Zeikus). Mechanism by which xylan and cellulose trigger the biosynthesis of endo-xylanase by Trichoderma reesei (P. Herzog et al.). Xylan degradation by the anaerobic bacterium Bacteroides xylanolyticus X5-1 (P.J.Y.M.J. Schyns, A.J.M. Stams). Molecular biology of xylanases from the rumen cellulolytic anaerobe Ruminococcus flavefaciens 17 - multiple genes and bifunctional enzymes (H.J. Flint, J-X. Zhang). Xylan-degrading enzymes produced by the thermophilic actinomycete Thermomonospora fusca (A.J. McCarthy, S.L. Bachmann). APPLICATION OF XYLANASES IN FOOD, FEED AND WOOD TECHNOLOGY.