>5a90A (A:) observed residues (from ATOM records)
svqqqlealekssggrlgvalintadnsqilyraderfamcstskvmaaaavlkqsesdk
hllnqrveikksdlvnynpiaekhvngtmtlaelgaaalqysdntamnkliahlggpdkv
tafarslgdetfrldrtaptlntaipgdprdtttplamaqtlknltlgkalaetqraqlv
twlkgnttgsasiraglpkswvvgdktgsgdygttndiaviwpenhaplvlvtyftqpeq
kaenrndilaaaakivthgf