>3fczB (B:) observed residues (from ATOM records)
ktviknetgtisisqlnknvwvhtelgsfavpssglvlntskglvlvdsswddkltkeli
emvekkfqkrvtdaiithahadriggiktlkergikahstaltaelakkngyeeplgdlq
tvtnlkfgnmkvetfypgkghtednivvwlpqynilvggclvkstsakdlgnvadayvne
wstsienvskryrninavvpshgevgdkglllhtldllk