>4k60A (A:) observed residues (from ATOM records)
iiggteckphsrpymayleivtngpskfcggflirrnfvltaahcagrsitvtlgahnit
eeedtwqklevikqfrhpkyntstlhhdimllklkekasltlavgtlpfvppgrmcrvag
wgrtgvlkpgsdtlqevklrlmdpqacshfrdfdhnlqlcvgnprktksafkgdsggpll
cagaaqgivsygrsdakppavftrishyqpwinqilqan