Chains and heterogens:
PDB Chain Sequences:
>4ipwA (A:) tatvllevpfsargdripdavaelrtrepirkvrtitgaeawlvssyalctqvledrrfs mketaaagaprlnaltvppevvnnmgniadaglrkavmkaitpkapgleqflrdtansll dnlitegapadlrndfadplatalhckvlgipqedgpklfrslsiafmssadpipaakin wdrdieymagilenpnittglmgelsrlrkdpayshvsdelfatigvtffgagvistgsf lttalisliqrpqlrnllhekpelipagveellrinlsfadglprlatadiqvgdvlvrk gelvlvlleganfdpehfpnpgsieldrpnptshlafgrgqhfcpgsalgrrhaqigiea llkkmpgvdlavpidqlvwrtrfqrriperlpvlw
>4ipwA (A:) atvllevpfsargdripdavaelrtrepirkvrtitgaeawlvssyalctqvledrrfsm ketaaagaprlnaltvppevvnnmgniadaglrkavmkaitpkapgleqflrdtanslld nlitegapadlrndfadplatalhckvlgipqedgpklfrslsiafmssadpipaakinw drdieymagilenpnittglmgelsrlrkdpayshvsdelfatigvtffgagvistgsfl ttalisliqrpqlrnllhekpelipagveellrinlsfadglprlatadiqvgdvlvrkg elvlvlleganfdpehfpnpgsieldrpnptshlafgrgqhfcpgsalgrrhaqigieal lkkmpgvdlavpidqlvwrtrfqrriperlpvlw