>3fk4B (B:) observed residues (from ATOM records)
giiatylihddshnlekkaeqialgltiglphllqeqlkqhkgnvihveelaehehtnsy
lrkkvkrgiikieypllnfspdlpailtttfgklsldgevklidltfsdelkkhfpgpkf
gidgirnllqvhdrpllmsifkgmigrnigylktqlrdqaiggvdivkddeilfltpltk
rivsgkevlqsvyetyghktlyavnltgrtfdlkenakravqagadillfnvfaygldvl
qslaeddeipvpimahpavsgaysasklygvssplllgkllryagadfslfpspykeeal
aiskylteddasfkksfsvpsagihpgfvpfivrdfgkdvvinagggihghpngaqgggk
afrtaidatlqnkplhevddinlhsalqiwg