>2c4oB (B:) observed residues (from ATOM records) rgsmalkrihkelndlardppaqcsagpvgddmfhwqatimgpndspyqggvffltihfp tdypfkppkvafttriyhpninsngsicldilrsqwspaltiskvllsicsllcdpnpdd plvpeiariyktdrekynriarewtqkyam