Chains and heterogens:
PDB Chain Sequences:
>4c4dA (A:) esactlqsethppltwqkcssggtctqqtgsvvidanwrwthatnsstncydgntwsstl cpdnetcaknccldgaayastygvttsgnslsidfvtqsaqknvgarlylmasdttyqef tllgnefsfdvdvsqlpcglngalyfvsmdadggvskyptntagakygtgycdsqcprdl kfingqanvegwepssnnantgigghgsccsemdiwqansisealtphpcttvgqeiceg dgcggtysdnryggtcdpdgcdwnpyrlgntsfygpgssftldttkkltvvtqfetsgai nryyvqngvtfqqpnaelgsysgnelnddyctaeeaefggssfsdkggltqfkkatsggm vlvmslwddyyanmlwldstyptnetsstpgavrgscstssgvpaqvesqspnakvtfsn ikfgpigstgnpsg