>1spgB (B:) SEQRES residues vdwtdaeraaikalwgkidvgeigpqalsrllivypwtqrhfkgfgnistnaailgnakv aehgktvmggldravqnmdniknvykqlsikhsekihvdpdnfrllgeiitmcvgakfgp saftpeiheawqkflavvvsalgrqyh