>3i4aB (B:) observed residues (from ATOM records)
aafgrathavvralpeslgqhalrsakgeevdvaraerqhqlyvgvlgsklglqvvelpa
deslpdcvfvedvavvceetalitrpgapsrrkevdmmkealeklqlnivemkdenatld
ggdvlftgreffvglskrtnqrgaeiladtfkdyavstvpvadglhlksfcsmagpnlia
igssesaqkalkimqqmsdhrydkltvpddiaanciylnipnkghvllhrtpeeypesak
vyeklkdhmlipvsmselekvdglltccsvlinkk