>1ek4B (B:) observed residues (from ATOM records)
mkrvvitglgivssignnqqevlaslregrsgitfsqelkdsgmrshvwgnvkldttgli
drkvvrfmsdasiyaflsmeqaiadaglspeayqnnprvgliagsgggsprfqvfgadam
rgprglkavgpyvvtkamasgvsaclatpfkihgvnysissasatsahcignaveqiqlg
kqdivfagggeelcwemacefdamgalstkyndtpekasrtydahrdgfviaggggmvvv
eelehalargahiyaeivgygatsdgadmvapsgegavrcmkmamhgvdtpidylnshgt
stpvgdvkelaairevfgdkspaisatkamtghslgaagvqeaiysllmlehgfiapsin
ieeldeqaaglnivtettdrelttvmsnsfgfggtnatlvmrklkd