>6xk2A (A:) observed residues (from ATOM records)
stssrclvrgsvnideffhlphivrpgetisstgltkraggkganqafavaraggqveld
gaigddgiwvkemlesagvgtdklkivkdevtgraviqsaadgensivlhaganyylpsp
ttslatythllvqnevplsstlayltaagqssppltsvfnpspmltpaqlrefpwkhlsw
livnegelgdlllafgssanpgeakedelqakasagilelhendyfsknvgiictlgakg
ilcyepgkevgylpaaklqnpvkdttgagdcfagyfvaglmsgkslqdalktclvacgic
venegamesvptlnavkerl