>4j6pB (B:) observed residues (from ATOM records)
fvcntcpekwinfqrkcyyfgkgtkqwvharyacddmegqlvsihspeeqdfltkhasht
gswiglrnldlkgefiwvdgshvdysnwapgeptqgedcvmmrgsgrwndafcdrklgaw
vcdrlatctp