>4utpB (B:) observed residues (from ATOM records)
klkvvatnsiiaditkniagdkidlhsivpigqdpheyeplpedvkktseadlifyngin
letggnawftklvenakktenkdyfavsdgvdviylegqnekgkedphawlnlengiifa
kniakqlsakdpnnkefyeknlkeytdkldkldkeskdkfnkipaekklivtsegafkyf
skaygvpsayiweinteeegtpeqiktlveklrqtkvpslfvessvddrpmktvsqdtni
piyaqiftdsiaeqgkegdsyysmmkynldkiaeglakgnlyf