>2c91A (A:) observed residues (from ATOM records)
plrpatvlgtmemgrrmdasasaasvraflerghseldtafmycdgqsenilgglglglg
sgdctvkiatkanpwegkslkpdsirsqletslkrlqcprvdlfylhapdhstpveetlc
achqlhqegkfvelglsnyaswevaeictlcksngwilptvyqgmynattrqveaellpc
lrhfglrfyaynplagglltgkykyedkdgkqpvgrffgnnwaetyrnrfwkehhfeaia
lvekalqttygtnaprmtsaalrwmyhhsqlqgtrgdavilgmssleqleqnlaateegp
lepavveafdqawnmvahecpnyfr