>2c1sA (A:) observed residues (from ATOM records)
rkcelqglwrnelgsnmtisaldvagtfsgsyqtavtatnkqilvsplkgaqqppgtkgq
qptfgftvqwqfadsttvfvgqcfvdrrgkemlemawllreevpsrkdtwkatrvgtnvf
trv