>sp|Q2Y651|PYRB_NITMU Aspartate carbamoyltransferase catalytic subunit OS=Nitrosospira multiformis GN=pyrB MSNNPQLNKSGQLQHLLTTEGLPASILLNILDTAEPFVGVTERDVKKVPLLRGKSIFNLF FEPSTRTRTTFEIAAKRLSADVINLNIAASSQSKGETLLDTVNNLSAMHADMFVVRHAQS GAAHLIAQHVRSDIHVINAGDGRHAHPTQALLDMFTIRRCKRDFHNLRVAIVGDILHSRV ARSQIHALTTLGVPEVRVIAPKTLLPAKVERLGVHVYHDMAKGLKDVDVLMMLRLQNERM LSARLPSTEEYFKYYGLTPEKLALAKPDAIVLHPGPMNRGVEIDSVVADGKQSVILPQVT FGIAVRMAVMSILAGS