>1xk1B (B:) observed residues (from ATOM records)
pqdlsealkeatkevhtqaenaefmrnfqkgqvtrdgfklvmaslyhiyvaleeeiernk
espvfapvyfpeelhrkaaleqdlafwygprwqevipytpamqryvkrlhevgrtepell
vahaytrylgdlshgqvlkkiaqkaldlpssgeglafftfpniasatkfkqlyesrmnsl
emtpavrqrvieeaktafllniqlfeelqellth