>1xk1A (A:) observed residues (from ATOM records)
pqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyvaleeeiernk
espvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhevgrtepell
vahaytrylgdlshgqvlkkiaqkaldlpssgeglafftfpniasatkfkqlyesrmnsl
emtpavrqrvieeaktafllniqlfeelqellth