這個基因編碼丙酮酸羧化酶，它需要生物素和ATP來催化丙酮酸羧化為草酰乙酸活性酶是一種排列在四面體中的同四聚體，該四面體僅位于線粒體基質中。丙酮酸羧化酶參與糖異生、脂肪生成、胰島素分泌和神經遞質谷氨酸的合成該基因突變與丙酮酸羧化酶缺乏癥有關另外，已經發現該基因具有不同的5’utr，但編碼相同蛋白質的剪接轉錄變體。
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.