NOVELTY - Method for degrading biomass or pretreated biomass to sugars, involves using an enzyme comprising a polypeptide chosen from polypeptide comprising amino acid sequence of SEQ ID NOs: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66 and 69. Sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication.    USE - The method is useful for degrading biomass or pretreated biomass to sugars which is used in food industries e.g. preparation of cereal-based food products, textile industry for treatment of cellulose-based fabrics, feed-enzyme industry e.g. increasing the digestibility of nutrients, pulp and paper industry e.g. enhancing bleachability of the pulp, waste treatment industry for decolorizing synthetic dyes, detergent industry for removing carbohydrate-based stains from laundry and bioethanol industry.    ADVANTAGE - The method inexpensively provides high yield of sugar with higher specificity and improved property.    DETAILED DESCRIPTION - Method for degrading biomass or pretreated biomass to sugars, involves using an enzyme comprising a polypeptide chosen from (a) polypeptide sequence of at least one chosen from SEQ ID NOs: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66 and 69, (b) polypeptide comprising amino acid sequence exhibiting at least 80%, 85%, 95%, 96%, 97%, 98% or 99% homology to amino acid sequence chosen from SEQ ID NOs: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66 and 69, (c) polypeptide encoded by nucleic acids sequence comprising a 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, 62, 64, 65, 67 and 68, or nucleic acids exhibiting at least 80%, 85%, 95%, 96%, 97%, 98% or 99% homology to base pair sequence chosen from 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, 62, 64, 65, 67 and 68, (d) polypeptide sequence encoded by a nucleic acids sequence capable of hybridizing under stringent conditions to the polynucleotide (a) (b) or (c) , and (e) polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the reverse complement of a polynucleotide (a), (b), (c), or (d). Sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication.