Expression constructs comprising a Terebella lapidaria nucleic acid encoding a cellulase, host cells, and methods of making the cellulase

An isolated nucleic acid construct or expression vector comprising a polynucleotide encoding a polypeptide having cellulase activity, wherein the polynucleotide is operably linked to one or more control sequences that direct the production of the polypeptide in an expression host cell and wherein the polypeptide has at least 95% sequence identity to the polypeptide of SEQ ID NO:

• 2.