Mist1, a classII basic helix-loop-helix (bHLH) protein which has been identified in mouse, rat and human, is an important exocrine pancreas transcriptional factor expressed in the acinar cells.

• Mist1是一个在腺泡细胞表达的重要的外分泌胰腺特异性转录因子，属于II型bHLH蛋白，已在小鼠、大鼠和人类中发现。