>1xsbA (A:) SEQRES residues gplgsmalracgliifrrclipkvdnnaieflllqasdgihhwtppkghvepgeddleta lratqeeagieagqltiiegfkrelnyvarnkpktviywlaevkdydveirlshehqayr wlgleeacqlaqfkemkaalqeghqflcsieal