NOVELTY - Degrading biomass or pretreated biomass, involves using an enzyme comprising a polypeptide having: polypeptide sequence selected from specific amino acid sequences, polypeptide sequence encoded by any one of nucleic acids sequence selected from specific nucleotide sequences, or polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the reverse complement of a polynucleotide.    USE - For degrading biomass or pretreated biomass for forming sugars such as glucose for converting to ethanol (claimed); and for feed and food processing applications.    ADVANTAGE - The enzymes used in the process feature a number of significant advantages over the enzymes currently used including aspects such as lower production costs, higher specificity towards the substrate, greater synergies with existing enzymes, less antigenic effect, less undesirable side activities, higher yields when produced in a suitable microorganism, more suitable pH and temperature ranges, better properties of the final product, and food grade or kosher aspects.    DETAILED DESCRIPTION - Degrading biomass or pretreated biomass, involves using an enzyme comprising a polypeptide having: a) an any one of polypeptide sequence selected from 26 amino acid sequences as given in the specification e.g. amino acid sequence containing 813 amino acids (SEQ ID NO.: 3) as given in the specification, amino acid sequence containing 320 amino acids (SEQ ID NO.: 6) as given in the specification, amino acid sequence containing 814 amino acids (SEQ ID NO.: 9) as given in the specification, amino acid sequence containing 536 amino acids (SEQ ID NO.: 12) as given in the specification, amino acid sequence containing 287 amino acids (SEQ ID NO.: 15) as given in the specification; amino acid sequence containing 259 amino acids (SEQ ID NO.: 18) as given in the specification; amino acid sequence containing 377 amino acids (SEQ ID NO.: 21) as given in the specification; amino acid sequence containing 224 amino acids (SEQ ID NO.: 24) as given in the specification; amino acid sequence containing 332 amino acids (SEQ ID NO.: 27) as given in the specification; and amino acid sequence containing 394 amino acids (SEQ ID NO.: 30) as given in the specification; b) a polypeptide that is at least 60%, preferably at least 97%, especially at least 98%, particularly at least 99% homologous to the any one of sequences given in (a) e.g. (SEQ ID NOs.: 3, 6, 9, 12, 15, 18, 21, 24, 27 and 30); c) a polypeptide sequence encoded by any one of nucleic acids sequence selected from 44 nucleotide sequences as given in the specification e.g. nucleotide sequence containing 2568 base pairs (SEQ ID NO.: 1) as given in the specification, nucleotide sequence containing 2442 base pairs (SEQ ID NO.: 1) as given in the specification, nucleotide sequence containing 2568 base pairs (SEQ ID NO.: 2) as given in the specification, nucleotide sequence containing 1166 base pairs (SEQ ID NO.: 4) as given in the specification, nucleotide sequence containing 963 base pairs (SEQ ID NO.: 5) as given in the specification, nucleotide sequence containing 2445 base pairs (SEQ ID NO.: 7) as given in the specification, nucleotide sequence containing 2445 base pairs (SEQ ID NO.: 8) as given in the specification, nucleotide sequence containing 2067 base pairs (SEQ ID NO.: 10) as given in the specification, nucleotide sequence containing 1611 base pairs (SEQ ID NO.: 11) as given in the specification, nucleotide sequence containing 1542 base pairs (SEQ ID NO.: 13) as given in the specification, nucleotide sequence containing 864 base pairs (SEQ ID NO.: 14) as given in the specification, or nucleic acids that are at least 60%, preferably at least 97%, especially at least 98%, particularly at least 99% homologous to any one of 44 nucleotide sequences as in (c); d) a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the polynucleotide as given in any one of sequences as in (c); or e) a polypeptide sequence encoded by a nucleic acids sequence hybridizing under stringent conditions to the reverse complement of a polynucleotide as set forth in any one of sequences as in (c).