>1pbxB (B:) SEQRES residues vewtdkersiisdifshmdyddigpkalsrclivypwtqrhfsgfgnlynaeaiignanv aahgikvlhgldrgvknmdniaatyadlstlhseklhvdpdnfkllsdcitivlaakmgh aftaetqgafqkflavvvsalgkqyh