>3v56B (B:) observed residues (from ATOM records)
vtqdclqliadsetptiqkgsytfvpwllsfkrgsaleekenkilvketgyffiygqvly
tdktyamghliqrkkvhvfgdelslvtlfrciqnmpetlpnnscysagiakleegdelql
aiprenaqisldgdvtffgalkll