>3nv7A (A:) observed residues (from ATOM records) kvgiypgtfdpvtnghidiihrsselfeklivavahssaknpmfslderlkmiqlatksf knvecvafegllaylakeyhckvlvrglrvvsdfeyelqmgyankslnheletlyfmptl qnafisssivrsiiahkgdashlvpkeiypliska