>1ad4B (B:) observed residues (from ATOM records)
tktkimgilnvtnvesavtrvkammdegadiidvggvmitveeelnrvlpvveaivgfdv
kisvdtfrsevaeaclklgvdiindqwaglydhrmfqvvakydaeivlmhngngnrdepv
veemltsllaqahqakiagipsnkiwldpgigfaktrneeaevmarldelvateypvlla
tsrkrftkemmgydttpverdevtaattaygimkgvravrvhnvelnaklakgidflken
enarhnfs