>3f75A (A:) observed residues (from ATOM records)
vlpselpagvdwrsrgcvtpvkdqrdcgscwafsttgalegahcaktgklvslseqelmd
csraegnqscsggemndafqyvldsggicsedaypylardeecraqscekvvkilgfkdv
prrseaamkaalakspvsiaieadqmpfqfyhegvfdascgtdldhgvllvgygtdkesk
kdfwimknswgtgwgrdgymymamhkgeegqcgllldasfpvm