>2gk1O (O:) observed residues (from ATOM records) tqvqqllvsitlqsecdafpnissdesytllvkepvavlkanrvwgalrgletfsqlvyq dsygtftinestiidsprfshrgilidtsrhylpvkiilktldamafnkfnvlhwhivdd qsfpyqsitfpelsnkgsyslshvytpndvrmvieyarlrgirvlpefdtpghtlswgkg qkdlltpcy