>6LDF_1|Chains A, B[auth C]|engineered cyt cb 562 variant, C96K AB5|Escherichia coli (562) ADLEDNMETLNDNLKVIEKADNAAQVKDALTKMAAAAADAWSATPPKLEDKSPDSPEMHDFRHGFWILIGQIHDALHLANEGKVKDAQEAAEHLKKTCNHCHQKYR