>3altB (B:) observed residues (from ATOM records) ltscpplwtgfngkcfrlfhnhlnfdnaenacrqfglascsgdelatghlasihsaesqa fltelvktslpdlitggwapqvyigmkvgstnsdqtwtdgssvdydgwvsgepnngpnsr gaiaagdysrgfwadvysnnnfkyicqlpcvhytle