>3krxB (B:) observed residues (from ATOM records)
eldqlrqeaeqlknqirdarkacadatlsqitnnidpvgriqmrtrrtlrghlakiyamh
wgtdsrllvsasqdgkliiwdsyttnkvhaiplrsswvmtcayapsgnyvacggldnics
iynlktregnvrvsrelaghtgylsccrflddnqivtssgdttcalwdietgqqtttftg
htgdvmslslapdtrlfvsgacdasaklwdvregmcrqtftghesdinaicffpngnafa
tgsddatcrlfdlradqelmtyshdniicgitsvsfsksgrlllagyddfncnvwdalka
dragvlaghdnrvsclgvtddgmavatgswdsflkiwn