TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preparation (Disclosed): The host cell is prepared by standard recombinant method. Preferred Host cell: The host cell comprises three, four, five or six recombinant nucleic acids chosen from SEQ ID NOs: 4, 8, 14, 20, 28, 34, and 38. The host cell further comprises one or more recombinant nucleic acids, where the recombinant nucleic acids encode one or more polypeptides chosen from cb1952, cb1953, cb1954, cb1946, cb629 and cb486 polypeptides. The host cell comprises two, three, four, five, six or more recombinant nucleic acids, where the recombinant nucleic acids encode two, three, four, five, six or more polypeptides. The cb1952 polypeptide comprises a sequence chosen from SEQ ID NO: 44, 114, 124, 126, 128, and 46, preferably 46, or 45, 115, 125, 127, 129, and 47, preferably 47. The cb1953 comprises a sequence chosen from SEQ ID NO: 60, 61, and 111, preferably 111, or 62, 63, and 110, preferably 110. The cb1954 polypeptide comprises a sequence chosen from SEQ ID NO: 74, 121, and 76, preferably 76, or 116, 75, and 77, preferably 77. The cb1946 polypeptide comprises sequence chosen from SEQ ID NO: 86, 87, and 113, preferably 113, or 88, 89, and 112, preferably 112. The cb629 polypeptide comprises sequence chosen from SEQ ID NO: 98, 119, and 100, preferably 100 or 99, 120, and 101, preferably 101. The cb486 polypeptide comprises sequence of SEQ ID NO: 106 or 107. The host cell further comprises six recombinant nucleic acids having sequence of SEQ ID NOs: 47, 110, 77, 112, 101, and 107. The host cell further comprises one or more recombinant nucleic acids encoding one or more polypeptides having sequence chosen from SEQ ID NOs: 46, 111, 76, 113, 124, 126, 128, and 100. The two or more of recombinant nucleic acids are present in contiguous polydeoxyribonucleotide chain. The host cell further comprises recombinant nucleic acid encoding cb1581 polypeptide having a sequence of SEQ ID NO: 146. Preferred Method: The methods (M2)-(M4) involve subjecting lignocellulose-containing material or biomass to pretreatment prior to being contacted with the host cell or composition, where the pretreatment comprises one or more treatments chosen from ammonia fiber expansion (AFEX), steam explosion, and treatment with alkaline aqueous solutions, acidic solutions, organic solvents, ionic liquids (IL), electrolyzed water, and phosphoric acid. At least part of the method is conducted at 40-80, preferably 60-80 degrees C. The method further involves contacting lignocellulose-containing material, biomass, plant material, or hemicellulose with cb1581 polypeptide. The functional groups are chosen from arabinose, glucuronyl, and acetyl. Sequences not defined here may be found at ftp://ftp.wipo.int/pub/published_pct_sequences/publication. EXAMPLE - No suitable example given.