Chains and heterogens:
PDB Chain Sequences:
>1r2zA (A:) mpqlpevetirrtllplivgktiedvrifwpniirhprdseafaarmigqtvrglerrgk flkflldrdalishlrmegryavasaleplephthvvfcftdgselryrdvrkfgtmhvy akeeadrrpplaelgpeplspafspavlaeravktkrsvkallldqtvvagfgniyvdes lfragilpgrpaaslsskeierlheemvatigeavmkggstvrtyvntqgeagtfqhhly vygrqgnpckrcgtpiektvvagrgthycprcqr
>1r2zA (A:) pqlpevetirrtllplivgktiedvrifwpniirhprdseafaarmigqtvrglerrgkf lkflldrdalishlrmegryavasaleplephthvvfcftdgselryrdvrkfgtmhvya keeadrrpplaelgpeplspafspavlaeravktkrsvkallldqtvvagfgniyvdesl fragilpgrpaaslsskeierlheemvatigeavmkggstvrtyvntqgeagtfqhhlyv ygrqgnpckrcgtpiektvvagrgthycprcqr