>1rtlA (A:) observed residues (from ATOM records)
apitayaqqtrgllgciitsltgrdknqvegevqivstatqtflatcingvcwtvyhgag
trtiaspkgpviqmytnvdqdlvgwpapqgsrsltpctcgssdlylvtrhadvipvrrrg
dsrgsllsprpisylkgssggpllcpaghavglfraavctrgvtkavdfipvenlettmr