>5gk4B (B:) observed residues (from ATOM records)
skifdfvkpgvitgddvqkvfqvakennfalpavncvgtdsinavletaakvkapvivqf
snggasfiagkgvksdvpqgaailgaisgahhvhqmaehygvpvilhtdhcakkllpwid
glldagekhfaatgkplfsshmidlseeslqenieicskylermskigmtleielgytqp
edvdyaytelskisprftiaasfgnvvltptilrdsqeyvskkhnlphnslnfvfhggsg
staqeikdsvsygvvkmnidtdtqwatwegvlnyykaneaylqgqlgnpkgedqpnkkyy
dprvwlragqtsmiarlekafqelnaidvl