>1az4A (A:) observed residues (from ATOM records) slrsdlinalydvcgiisaegkiyplstifelfsrpiinkiaekhgyiveepkqqnhypd ftlykpsepnkkiaidikatytenekkftlggytsfirnntknivypfdqyiahwiigyv ytrvktyninelneipkpykgvkvflqdkwviagdlagnigsihahydfvegkgifdsed efldywr