>4q3qB (B:) observed residues (from ATOM records)
kllytsanflgiptnrgqpkigtyqgpelirksnffqlvaedgiqltdcgdiipvelnea
edpqrfgmkwsrsfslttlriaerveelmkqsnkstplvivggdhsmatgtilghaeakp
dlcvlwidahgdintplnsasgnmhgmplsflvkelqdqipwlddfegikpclnasniay
iglrdldahethdirkhgiayftmldvdrmgieavikeallavnprlekaihlsfdidal
dplvapstgtavpggltlreglriceevsatgklsvvelaelnpllgsqedvlktqssav
hilraclghcrsghlpfkvrnltdqgimsraahmq