TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Composition: In the enzyme composition, the recombinant polypeptide improves the hydrolysis performance of the enzyme composition when the recombinant polypeptide constitutes up to 20 wt.% of the enzyme composition, where the improved hydrolysis performance comprises: (a) an increased percent glucan conversion, an increased percent xylan conversion, and/or an increased percent glucan and percent xylan conversion from a given lignocellulosic biomass substrate under the same hydrolysis conditions; or (b) an at least about 5% faster viscosity reduction of a given lignocellulosic biomass substrate under the same hydrolysis conditions. The recombinant polypeptide has an increased beta-mannanase activity as compared to the beta-mannanase activity of ScoMan1 comprising fully defined 384 amino acids (SEQ ID NO: 4), given in the specification. The recombinant polypeptide has an increased beta-mannanase activity as compared to the beta-mannanase activity of Bsp Man1 comprising fully defined 694 amino acids (SEQ ID NO: 5), given in the specification. The recombinant polypeptide has an increased beta-mannanase activity as compared to the beta-mannanase activity of Msp Man2 comprising fully defined 462 amino acids (SEQ ID NO: 6), given in the specification. The recombinant polypeptide retains greater than 70% of the beta-mannanase activity when incubated at a pH range of 4-8. The recombinant polypeptide has optimum beta-mannanase activity at a pH of about 7.0. The recombinant polypeptide retains at least 80% or more of the beta-mannanase activity when incubated at a temperature of 50-78 degrees C. The recombinant polypeptide has optimum beta-mannanase activity at a temperature of about 71 degrees C. The recombinant polypeptide retains at least 50% of the beta-mannanase activity when incubated for about 2 hours at a temperature of about 59 degrees C, and retains at least 99% of the beta-mannanase activity when incubated for about 2 hours at a temperature of up to 60 degrees C. The recombinant polypeptide comprises an amino acid sequence that is at least 85% identical to the amino acid sequence of SEQ ID NO: 2 or SEQ ID NO: 3. The recombinant polypeptide comprises an amino acid sequence that is at least 90-95% identical to the amino acid sequence of SEQ ID NO: 2 or SEQ ID NO: 3. The cellulases are selected from one or more beta-glucosidases, one or more cellobiohydrolases, and one or more endoglucanases. The enzyme composition further comprises one or more other hemicellulases, where the one or more other hemicellulases are selected from one or more other beta-mannanases, one or more one or more xylanases, one or more beta-xylosidases, and one or more L-arabinofuranosidases. Alternatively, the composition comprises the enzyme compositions and a lignocellulosic biomass substrate. Preferred Nucleic Acid: In the nucleic acid, the recombinant polypeptide further comprises a signal peptide sequence, where the signal peptide sequence is selected from any one of fully defined 16-85 amino acids (SEQ ID NOS: 15-43), given in the specification. Preferred Cell: The host cell is a bacterial cell or a fungal cell. Preferred Method: In hydrolyzing the lignocellulosic biomass substrate, the lignocellulosic biomass substrate comprises up to about 20 wt.% , up to about 15%, or up to about 10 wt.% of galactoglucomannan and/or glucomannan. EXAMPLE - No suitable example given.