>5xl1D (D:) observed residues (from ATOM records)
glfgaiagfiengwqglidgwygfrhqnaegtgtaadlkstqaaidqingklnrliektn
dkyhqiekefeqvegriqdlekyvedtkidlwsynaellvalenqhtidvtdsemnklfe
rvrrqlrenaedkgngcfeifhkcdnnciesirngtydhdiyrdeainnrfq