NOVELTY - Degrading biomass or pretreated biomass to sugars using an enzyme, is claimed, where: the enzyme comprises a polypeptide having a polypeptide sequence; a polypeptide that is at least 60%, preferably at least 99% homologous sequence; a polypeptide sequence encoded by nucleic acids sequence; a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the polynucleotide; or a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the reverse complement of a polynucleotide.    USE - The enzyme is useful: for degrading biomass or pretreated biomass to sugars, where the formed sugars are converted into ethanol (all claimed) and for the conversion of biomass into biofuel; and in food applications such as cereal-based food products, textile industry for the treatment of cellulose-based fabrics, a feed-enzyme industry for increasing the digestability of nutrients, the pulp and paper industry for enhancing bleachability of the pulp, a waste treatment industry for the decolorization of synthetic dyes, a bioethanol industry for improving the ethanol yield and a detergent industry for removal from laundry of carbohydrate-based stains.    ADVANTAGE - The enzyme has high specificity, less antigenic effect and undesirable side activities, is capable of economically degrading the biomass at extreme pH and temperature with high efficiency, improves the yield of the ethanol, reduces production cost of the ethanol, and improves the nutritional quality of the feed.    DETAILED DESCRIPTION - Degrading biomass or pretreated biomass to sugars using an enzyme, is claimed, where: the enzyme comprises a polypeptide having a polypeptide sequence of SEQ ID NOs: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 44, 47 and 50; a polypeptide that is at least 60%, preferably at least 99% homologous to the any one of SEQ ID NOs: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 44, 47 and 50; a polypeptide sequence encoded by nucleic acids sequence of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 34, 35, 37, 38, 40, 41, 43, 45, 46, 48 and 50 or nucleic acids that are at least 60%, preferably 99% homologous to any one of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 34, 35, 37, 38, 40, 41, 43, 45, 46, 48 and 50; a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the polynucleotide of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 34, 35, 37, 38, 40, 41, 43, 45, 46, 48 and 50; or a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the reverse complement of a polynucleotide of SEQ ID NOs: 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 34, 35, 37, 38, 40, 41, 43, 45, 46, 48 and 50, where sequences not defined here may be found at ftp://ftp.wipo.int/pub/published-pct-sequences/publication.