>2b4xI (I:) observed residues (from ATOM records)
vdictakprdipmnpmciyrspekkeqkipeatnrrvwelskansrfattfyqhladskn
dndniflsplsistafamtklgacndtlqqlmevfkfdtisektsdqihfffaklncrly
rkkssklvsanrlfgdksltfnetyqdiselvygaklqpldfkenaeqsraainkwvsnk
tegritdvipseaineltvlvlvntilfkglwkskfspentrkelfykadgescsasmmy
qegkfryrrvaegtqvlelpfkgdditmvlilpkpekslakvekeltpevlqewldelee
mmlvvhmprfriedgfslkeqlqdmglvdlfspeksklpgiddlyvsdafhkaflevnee
gseaaastavviagrslnpnrvtfkanrpflvfirevplntiifmgrvanpcv