Chains and heterogens:
PDB Chain Sequences:
>1mkmA (A:) mntlkkafeildfivknpgdvsvseiaekfnmsvsnaykymvvleekgfvlrkkdkryvp gyklieygsfvlrrfnirdiahdhlvdimkrtgetvhlilkdgfegvyidkvegeqsipm vsrlgmkvdlystasgksilafvpekelkeylkivelkpktpntitnprvlkrelekirk rgyavdneeneigimcvgvpifdhngypvagvsisgvarkfteekieeysdvlkekaeei srklgy
>1mkmB (B:) hmntlkkafeildfivknpgdvsvseiaekfnmsvsnaykymvvleekgfvlrkkdkryv pgyklieygsfvlrrfnirdiahdhlvdimkrtgetvhlilkdgfegvyidkvegeqsip mvsrlgmkvdlystasgksilafvpekelkeylkivelkpktpntitnprvlkrelekir krgyavdneeneigimcvgvpifdhngypvagvsisgvarkfteekieeysdvlkekaee isrklgy