An isolated fungal endoglucanase polypeptide, which belongs to glycosyl hydrolase family 45, which shows substantial performance at {HEAD ~ low temperatures}, and which comprises an amino acid sequence having {TAIL ~ at least 90% sequence identity} to SEQ ID NO: 13, 15, 17, 19, 21 or 23 
An isolated fungal endoglucanase polypeptide , which belongs to glycosyl hydrolase family 45 , which shows substantial performance at { HEAD ~ low temperatures } , and which comprises an amino acid sequence having { TAIL ~ at least 90 % sequence identity } to SEQ ID NO : 13 , 15 , 17 , 19 , 21 or 23
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