这个基因编码丙酮酸羧化酶，它需要生物素和ATP来催化丙酮酸羧化为草酰乙酸活性酶是一种排列在四面体中的同四聚体，该四面体仅位于线粒体基质中。丙酮酸羧化酶参与糖异生、脂肪生成、胰岛素分泌和神经递质谷氨酸的合成该基因突变与丙酮酸羧化酶缺乏症有关另外，已经发现该基因具有不同的5’utr，但编码相同蛋白质的剪接转录变体。

This gene encodes pyruvate carboxylase, which requires biotin and ATP to catalyse the carboxylation of pyruvate to oxaloacetate. The active enzyme is a homotetramer arranged in a tetrahedron which is located exclusively in the mitochondrial matrix. Pyruvate carboxylase is involved in gluconeogenesis, lipogenesis, insulin secretion and synthesis of the neurotransmitter glutamate. Mutations in this gene have been associated with pyruvate carboxylase deficiency. Alternatively spliced transcript variants with different 5' UTRs, but encoding the same protein, have been found for this gene.