HEADER OXIDOREDUCTASE 31-DEC-69 6ZIP TITLE Crystal Structure of Two-Domain Laccase mutant R240A from TITLE 2 Streptomyces griseoflavus DBREF 6ZIP J 1 322 UNP A0A0M4FJ A0A0M4FJ81_ 1 322 DBREF 6ZIP K 1 322 UNP A0A0M4FJ A0A0M4FJ81_ 1 322