>3cs6A (A:) observed residues (from ATOM records)
slrpklseeqqriiailldahhktydptysdfcqfrppvrvndgggsvtlelsqlsmlph
ladlvsysiqkvigfakmipgfrdltsedqivllkssaievimlrsnesftmddmswtcg
nqdykyrvsdvtkaghslelieplikfqvglkklnlheeehvllmaicivspdrpgvqda
alieaiqdrlsntlqtyircrhpppgshllyakmiqkladlrslneehskqyrclsfqpe
csmkltplvlevfg