>3us7A (A:) observed residues (from ATOM records)
mikefntqttlnvglealwaaqskditlvvpkvlpnivkdvqviegdggvgtklifnflp
giapvnyqreviteydelshtiglqvveggylnqglsyykttfqfsaisenktlvnvkis
ydheselieekvkptktsestlfylgqlekflln