>4m53A (A:) observed residues (from ATOM records)
awpkvqpevnigvvghvdhgkttlvqaitgiwtskklgyaetnigvcesckkpeayvtep
sckscgsddepkflrrisfidapghevlmatmlsgaalmdgailvvaanepfpqpqtreh
fvalgiigvknliivqnkvdvvskeealsqyrqikqftkgtwaenvpiipvsalhkinid
sliegieeyiktpyrdlsqkpvmlvirsfdvnkpgtqfnelkggviggsiiqglfkvdqe
ikvlpglrvekqgkvsyepiftkissirfgdeefkeakpgglvaigtyldpsltkadnll
gsiitladaevpvlwnirikynllervvgakemlkvdpiraketlmlsvgssttlgivts
vkkdeievelrrpvavwsnnirtvisrqiagrwrmigwglvei