>3KUU_1|Chains A, B, C, D|Phosphoribosylaminoimidazole carboxylase catalytic subunit PurE|Yersinia pestis (632) MGANLNSAYAAGVKIAIVMGSKSDWATMQFAADVLTTLNVPFHVEVVSAHRTPDRLFSFAEQAEANGLHVIIAGNGGAAHLPGMLAAKTLVPVLGVPVQSAALSGVDSLYSIVQMPRGIPVGTLAIGKAGAANAALLAAQILALHDTELAGRLAHWRQSQTDDVLDNPDPREEA