>1s13A (A:) observed residues (from ATOM records)
pqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyvaleeeiernk
espvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhevgrtepell
vahaytrylgdlsggqvlkkiaqkaldlpssgeglafftfpniasatkfkqlyrsrmnsl
emtpavrqrvieeaktafllniqlfeelqellth