NOVELTY - Polypeptide having hemicellulase or alpha -glucuronidase comprising an amino acid sequence of SEQ ID NO: 2 or 13 or an amino acid sequence encoded by the nucleotide sequence of SEQ ID NO: 1, or its variant polypeptide or variant polynucleotide, is new, where the variant polypeptide has at least 70% sequence identity with the sequence of SEQ ID NO: 2 or 13 or the variant polynucleotide encodes a polypeptide that has at least 70% sequence identity with the sequence of SEQ ID NO: 2 or 13 (where sequences not defined here may be found at ftp://ftp.wipo.int/pub/published-pct-sequences/publication).    USE - The polypeptide is useful for: producing sugar from a lignocellulosic material (claimed) including e.g. agricultural biomass, commercial organics, construction and demolition debris, municipal solid waste, waste paper, yard waste, trees, shrubs and grasses, wheat, wheat straw, sugar cane bagasse, corn, bark, needles, logs, roots, saplings, short rotation woody crops, shrubs, switch grasses, trees, vegetables, fruit peels, vines, sugar beet pulp, wheat middlings, and hard and soft woods, where the sugar includes monosaccharides, disaccharides, oligosaccharides and polysaccharides, and hexose and/or pentose sugars such glucose, xylose, arabinose, galactose, galacturonic acid, glucuronic acid, mannose, rhamnose, ribose and fructose; and in food (including e.g. dough or a cereal-based food product including white, whole-meal or rye bread, loaves or rolls, French baguette-type bread, pasta, noodles, doughnuts, bagels, cake, pita bread, tortillas, tacos, cakes, pancakes, biscuits, cookies, pie crusts, steamed bread, and crisp bread, boiled noodles, dumplings) for poultry and pigs, feed or paper and pulping industries, fabric, textile, an item of clothing, and agricultural processes, and detergent compositions, antibacterial formulation and pharmaceutical products such as throat lozenges, toothpastes, and mouthwash. The sugar is useful for producing chemicals, plastics, such as for instance succinic acid and (bio) fuels, including ethanol, methanol, butanol synthetic liquid fuels and biogas. No biological data given.    ADVANTAGE - The polypeptide is capable of performing rapid and efficient biodegradation of lignocellulosic materials with increased thermostability to produce sugar, provides increased strength, elasticity, stability and volume, improved machinability, cohesiveness, firmness, proofing resistance, extensibility, crumb structure, softness, flavor and anti-staling, and reduced cooking loss, stickiness and blistering of the cereal-based products, and reduces the rate at which cellulose-containing fabrics become harsh or reduces the harshness of cellulose-containing fabrics.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a nucleic acid sequence coding for an hemicellulase, where the nucleic acid sequence is (a) a nucleic acid sequence having at least 70% identity with the nucleic acid sequence of SEQ ID NO: 1, 4 or 5, (b) a nucleic acid sequence hybridizing with the complement of the nucleic acid sequence of SEQ ID NO: 1, 4 or 5, (c) a nucleic acid sequence encoding (i) the amino acid sequence of SEQ ID NO: 2 or 13, (ii) an amino acid sequence having at least 70% identity with the amino acid sequence of SEQ ID NO: 2 or 13, or (iii) an amino acid sequence that differs in 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 amino acids from the amino acid sequence of SEQ ID NO: 2 or 13, or (d) a nucleotide sequence which is the reverse complement of a nucleotide sequence in (a), (b) or (c);    (2) a nucleic acid construct or vector comprising the polynucleotide;    (3) a recombinant cell comprising the polypeptide or the nucleic acid construct or vector;    (4) preparation of a polypeptide having hemicellulase or alpha -glucuronidase;    (5) a composition comprising (i) the polypeptide and (ii) a cellulase and/or an additional hemicellulase and/or a pectinase; and    (6) treatment of a substrate comprising hemicellulose, optionally a plant material, comprising contacting the substrate with a polypeptide and/or the composition (where sequences not defined here may be found at ftp://ftp.wipo.int/pub/published-pct-sequences/publication).