>1vkaB (B:) observed residues (from ATOM records) avnvystsvtsdnlsrhdmlawineslqlnltkieqlcsgaaycqfmdmlfpgsialkkv kfqakleheyiqnfkilqagfkrmgvdkiipvdklvkgkfqdnfefvqwfkkffdanydg kdydpvaar