>6kx4A (A:) observed residues (from ATOM records)
gvnavhwfrkglrlhdnpalkeciqgadtircvyildginrwrfllqcledldanlrkln
srlfvirgqpadvfprlfkewnitklsieydsepfgkerdaaikklateagvevivrish
tlydldkiielnggqppltykrfqtlvskmeplempadtitsdvigkcmtplsddhdeky
gvpsleelgfdtlssavwpggetealtrlerhlerkarmnansllasptglspylrfgcl
scrlfyfkltdlykkvkknsspplslygqllwreffytaatnnprfdkmegnpicvqipw
dknpealakwaegrtgfpwidaimtqlrqegwihhlarhavacfltrgdlwisweegmkv
feellldadwsinagswmwlscssffqqffhcycpvgfgrrtdpngdyirrylpvlrgfp
akyiydpwnapegiqkvakcligvnypkpmvnhaeasrlniermkqiyqql