>4cxaA (A:) observed residues (from ATOM records)
dwgkrcvdkfdiigiigegtygqvykakdkdtgelvalkkvrldnekegfpitaireiki
lrqlihrsvvnmkeivtdkqldfkkdkgafylvfeymdhdlmgllesglvhfsedhiksf
mkqlmegleychkknflhrdikcsnillnnsgqikladfglarlynseerpytnkvitlw
yrppelllgeerytpaidvwscgcilgelftkkpifqanlelaqlelisrlcgspcpavw
pdviklpyfntmkpkkqyrrrlreefsfipsaaldlldhmltldpskrctaeqtlqsdfl
kdvelskmappdlphwqdchelwskkrrrq