>2p51A (A:) observed residues (from ATOM records)
sqispirdvwstnlqqemnlimslierypvvsmdtefpgvvarplgvfkssddyhyqtlr
anvdslkiiqiglalsdeegnapveactwqfnftfnlqddmyapesielltksgidfkkh
qevgiepadfaelligsglvlqeevtwitfhsgydfayllkamtqiplpaeyeefykilc
iyfpknydikyimksvlnnskglqdiaddlqihrigpqhqagsdalltariffeirsryf
dgsidsrmlnqlygl