Chains and heterogens:
PDB Chain Sequences:
>2iatA (A:) ipvieplftkvtedipgaegpvfdkngdfyivapevevngkpageilridlktgkktvic kpevngyggipagcqcdrdanqlfvadmrlgllvvqtdgtfeeiakkdsegrrmqgcndc afdyegnlwitapagevapadytrsmqekfgsiycfttdgqmiqvdtafqfpngiavrhm ndgrpyqlivaetptkklwsydikgpakienkkvwghipgtheggadgmdfdednnllva nlgsshievfgpdggqpkmrircpfekpsnlhfkpqtktifvtehennavwkfewqrngk kqycetlkfgif