>5xc1A (A:) observed residues (from ATOM records)
vqpfaaqvasladryeesfdigaavephqlngrqgkvlkhhynsivaenamkpislqpee
gvftwdgadaivefarknnmnlrfhtlvwhnqvpdwffldeegnpmveetneakrqanke
lllerlethiktvverykddvtawdvvnevvddgtpnerglresvwyqitgdeyirvafe
tarkyagedaklfindyntevtpkrdhlynlvqdlladgvpidgvghqahiqidwptide
irtsmemfaglgldnqvteldvslygwpprpafptydaipqerfqaqadrynqlfelyee
ldadlssvtfwgiadnhtwlddrareyndgvgkdapfvfdpnyrvkpafwriid