>4b42A (A:) observed residues (from ATOM records)
mkrkgiilaggsgtrlhpatlaiskqllpvydkpmiyyplstlmlagireiliistpqdt
prfqqllgdgsnwgldlqyavqpspdglaqafligesfigndlsalvlgdnlyyghdfhe
llgsasqrqtgasvfayhvldperygvvefdqggkaisleekplepksnyavtglyfydq
qvvdiardlkpsprgeleitdvnraylergqlsveimgrgyawldtgthdslleagqfia
tlenrqglkvacpeeiayrqkwidaaqleklaaplakngygqylkrlltetvy