Chains and heterogens:
PDB Chain Sequences:
>1exiA (A:) esyysigevsklanvsikalryydkidlfkpayvdpdtsyryytdsqlihldlikslkyi gtpleemkkaqdlemeelfafyteqerqirekldflsaleqtislvkkrmkrqmeypalg evfvldeeeiriiqteaegigpenvlnasysklkkfiesadgftnnsygatfsfqpytsi demtyrhiftpvltnkqissitpdmeittipkgryaciaynfspehyflnlqklikyiad rqltvvsdvyeliipihyspkkqeeyrvemkiria