>3iexB (B:) observed residues (from ATOM records)
svtanienvkkvahhiqkltsivpeigiicggvkdkitipytkipnfpqtsgnlifgtls
grkvvvmqgrfhmyegysndtvalpirvmkllgvkilmvsnaagglnrslklgdfvilkd
hiylpglglnnilvgpnqeafgtrfpalsnaydrdlrklavqvaeengfgnlvhqgvyvm
nggpcyetpaectmllnmgcdvvgmstipevviarhcgiqvfavslvtnisvldvetgaq
raelmqswfekiieklpkd