Cytochrome b5 type B MSGSMATAEA SGSDGKGQEV ETSVTYYRLE EVAKRNSLKE LWLVIHGRVY DVTRFLNEHP GGEEVLLEQA GVDASESFED VGHSSDAREM LKQYYIGDIH PDPSKNDTCK SCWAYWILPI IGAVLLGFLY RYYTSESKSS