>6fz4A (A:) observed residues (from ATOM records)
rtlivttileepyvmyrksdkplygndrfegycldllkelsnilgflydvklvpdgkyga
qndkgewngmvkelidhradlavapltityvrekvidfskpfmtlgisilyrkgtpidsa
ddlakqtkieygavrdgstmtffkkskistyekmwafmssrqqsalvknsdegiqrvltt
dyallmestsieyvtqrncnltqigglidskgygvgtpigspyrdkitiailqlqeegkl
hmmkekwwrg