NOVELTY - Method for degrading biomass or pretreated biomass to sugars, involves using enzyme comprising (a) polypeptide containing specific amino acid sequences, (b) polypeptide exhibiting at least 60%, preferably at least 70%, more preferably at least 80%, even more preferably at least 97%, 98% or 99% sequence homology with the above-mentioned amino acid sequences, (c) polypeptide encoded by nucleic acids sequence comprising specific base pair sequences, or (d) polypeptide sequence encoded by a nucleic acids sequence capable of hybridizing under stringent conditions.    USE - The method is useful for degrading biomass or pretreated biomass to sugars which is converted to ethanol (all claimed).    ADVANTAGE - The method is simple and cost-effective.    DETAILED DESCRIPTION - Method for degrading biomass or pretreated biomass to sugars, involves using enzyme comprising (a) polypeptide comprising a amino acid sequences of SEQ ID NOs: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 62 and 64, (b) polypeptide exhibiting at least 60%, preferably at least 70%, more preferably at least 80%, even more preferably at least 90%, 95%, 96%, 97%, 98% or 99% sequence homology with the above-mentioned amino acid sequences, (c) polypeptide encoded by nucleic acids sequence comprising base pair 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, 44, 46, 47, 49, 50, 52, 53, 55, 56, 58, 59, 61 and 63, or nucleic acids exhibiting at least 60%, preferably at least 70%, more preferably at least 80%, even more preferably at least 90%, 95%, 96%, 97%, 98% or 99% sequence homology with the above-mentioned sequences, (d) polypeptide sequence encoded by a nucleic acids sequence capable of hybridizing under stringent conditions to the above-mentioned base pair sequences, or (e) polypeptide sequence encoded by nucleic acids sequence capable of hybridizing under stringent conditions to the reverse complement of the polynucleotide comprising above-mentioned base pair sequences. Sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication.