lytic polysaccharide monooxygenase (LPMO) auxiliary activity family 9 (AA9). AA9 proteins are copper-dependent lytic polysaccharide monooxygenases (LPMOs) involved in the cleavage of cellulose chains with oxidation of carbons C1 and/or C4 and C6. Activities include lytic cellulose monooxygenase (C1-hydroxylating) (EC 1.14.99.54) and lytic cellulose monooxygenase (C4-dehydrogenating) (EC 1.14.99.56). The family used to be called GH61 because weak endoglucanase activity had been demonstrated in some family members.
CFEM domain. This fungal specific cysteine rich domain is found in some proteins with proposed roles in fungal pathogenesis. The structure of the CFEM domain containing protein 'Surface antigen protein 2' from Candida albicans has been solved.