>1r4nA (A:) observed residues (from ATOM records)
kllkeqkydrqlrlwgdhgqealesahvclinatatgteilknlvlpgigsftiidgnqv
sgedagnnfflqrssigknraeaameflqelnsdvsgsfveespenlldndpsffcrftv
vvatqlpestslrladvlwnsqipllicrtyglvgymriiikehpvieshpdnaledlrl
dkpfpelrehfqsydhshtpwiviiakylaqwysetngripktykekedfrdlirqgilk
pedeenfeeaiknvntalnttqipssiedifnddrcinitkqtpsfwilaralkefvake
gqgnlpvrgtipdmiadsgkyiklqnvyrekakkdaaavgnhvakllqsigqapesisek
elkllcsnsaflrvvrcrslaeeygldtinkdeiissmdnpdneivlylmlravdrfhkq
qgrypgvsnyqveedigklkscltgflqeyglsvmvkddyvhefcrygaaephtiaaflg
gaaaqevikiitkqfvifnntyiysgmsqtsatfql