NOVELTY - A polypeptide having non-starch carbohydrate material modifying activity which comprises the amino acid sequence of SEQ ID NO: 3 or an amino acid sequence encoded by the nucleotide sequence of SEQ ID NO: 1 and/or SEQ ID NO: 2, or its variant or fragment, is new.    USE - The polypeptide and composition are useful for treating a substrate to produce sugar from a ligno-cellulosic plant material (claimed). The sugars are used for fermentation into chemicals, plastics, such as for instance succinic acid and (bio) fuels, including ethanol, methanol, butanol, synthetic liquid fuels and biogas, for ensiling, and also as enzyme in other industrial processes, for example in the food or feed, textile, pulp or paper or detergent industries and other industries.    ADVANTAGE - The present invention provides new highly active cellulases and hemicellulases and highly efficient enzyme compositions capable of performing rapid and efficient biodegradation of lignocellulosic materials.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are: (1) a polynucleotide encoding the polypeptide above, or a polynucleotide which comprises (i) the nucleotide sequence of SEQ ID NO: 1 and/or SEQ ID NO: 2, (ii) a nucleotide sequence which hybridizes selectively with a polynucleotide being the reverse complement of SEQ ID NO: 1 and/or SEQ ID NO: 2, (iii) a nucleotide sequence having at least 80% sequence identity with the nucleotide sequence of SEQ ID NO: 1 and/or SEQ ID NO: 2, (iv) a fragment of a nucleotide sequence as defined in (a), (b) or (c) which is at least 100 nucleotides in length, (v) a sequence which is degenerate as a result of the genetic code to a sequence in (i) to (iv), or (vi) a nucleotide sequence which is the reverse complement of a nucleotide sequence in (i) to (v); (2) a nucleic acid construct comprising the polynucleotide of (1); (3) a vector incorporating a polynucleotide sequence or a nucleic acid construct above; (4) a cell comprising a polypeptide above, polynucleotide, nucleic acid construct, or vector above; (5) a transgenic plant or plant part which comprises a polynucleotide, nucleic acid construct, or vector, where optionally the plant is a corn plant, a sorghum plant, a tomato plant, a wheat plant, an oilseed plant, a rapeseed plant, a soybean plant, a barley plant, a grass, or a tobacco plant; or a plant of the genera Anacardium, Arachis, Atropa, Avena, Brassica, Citrus, Citrullus, Capsicum, Carthamus, Cocos, Coffea, Cucumis, Cucurbita, Daucus, Elaeis, Fragaria, Glycine, Gossypium, Helianthus, Hordeum, Hyoscyamus, Lactuca, Linum, Lolium, Lupinus, Lycopersicon, Malus, Majorana, Medicago, Nicotiana, Olea, Oryza, Panieum, Pannisetum, Persea, Pistachio, Pisum, Pyrus, Prunus, Raphanus, Ricinus, Secale, Senecio, Sinapis, Sorghum, Theobromus, Trigonella, Triticum, Vicia, Vitis, Vigna or Zea; (6) a method for preparing the polypeptide above; (7) a composition comprising (i) a polypeptide above, and (ii) a cellulase and/or a hemicellulase and/or a pectinase; and (8) a method for treating a substrate comprising non-starch carbohydrate material, optionally a plant material, by contacting the substrate with a polypeptide and/or or a composition above.