>2f4vG (G:) observed residues (from ATOM records) arrrraevrqlqpdlvygdvlvtafinkimrdgkknlaarifydackiiqektgqeplkv fkqavenvkprmevrsrrvgganyqvpmevsprrqqslalrwlvqaanqrperraavria helmdaaegkggavkkkedvermaeanrayahyrw