>3ca3A (A:) observed residues (from ATOM records)
tsftrnivgrdglcvdvrngydtdgtplqlwpcgtqrnqrwtfdsddtirsmgkcmtang
lnngsnivifncstaaenaikwevpidgsiinpssglvmtapraasrtillledniyaas
qgwtvtnnvkpivasivgykemclqsngenngvwmedceatslqqqwalygdrtirvnst
rglcvttngynskdliiilkcqglpsqrwffnsdgaivnpksrlvmdvrasnvslreiii
fpatgnpnqqwvtqvlp