>1a3nB (B:) SEQRES residues hltpeeksavtalwgkvnvdevggealgrllvvypwtqrffesfgdlstpdavmgnpkvk ahgkkvlgafsdglahldnlkgtfatlselhcdklhvdpenfrllgnvlvcvlahhfgke ftppvqaayqkvvagvanalahkyh