>1g3sA (A:) observed residues (from ATOM records)
lvdttemylrtiyeleeegvtplrariaerleqsgptvsqtvarmerdglvvvasdrslq
mtptgrtlatavmrkhrlaerlltdiigldinkvhdeasrwehvmsdeverrlvkvlkdv
srspfgnpipgldelgvpgtrvidaatsmprkvrivqineifqvetdqftqlldadirvg
seveivdhitlshngkdvellddlahtiriee