PTF1A
PTF1A (pancreas associated transcription factor 1a, also known as PTF1-p48, p48 and bHLHa29) is a basic helix-loop-helix transcription factor that directs cell fate decisions in several organs. It is a component of the pancreas transcription factor 1 complex and is central to pancreatic development. Browse Assay Genie's current range of PTF1A research reagents below, or read on for the biology behind the target.
PTF1A is a transcription factor implicated in cell fate determination in various organs. It binds the E-box consensus sequence 5'-CANNTG-3' and plays a role in both early and late pancreas development and differentiation. It helps determine whether cells allocated to the pancreatic buds continue towards pancreatic organogenesis or revert to duodenal fates, and it is required for the formation of pancreatic acinar and ductal cells. It may also contribute to maintaining exocrine pancreas-specific gene expression, including ELA1 (elastase 1) and amylase.
Beyond the pancreas, PTF1A has an important role in cerebellar development. In the retina, it is directly regulated by FOXN4 and RORC, and the FOXN4-PTF1A pathway plays a central role in directing retinal progenitors towards horizontal and amacrine cell fates. The PTF1A protein is found in the nucleus and cytoplasm, consistent with its action as a DNA-binding regulator of gene expression.
The PTF1A gene encodes a component of the pancreas transcription factor 1 complex (PTF1), and the protein is also known as PTF1-p48 or p48. HGNC classifies it among the basic helix-loop-helix proteins and the PTF1 complex group, with the alias bHLHa29 and the previous name pancreas specific transcription factor, 1a. Mutations in the gene cause cerebellar agenesis, and loss of expression is seen in ductal type pancreas cancers. Mouse and rat both have a Ptf1a ortholog, which supports comparative developmental studies.
PTF1A helps determine whether cells in the pancreatic buds proceed to pancreatic organogenesis or revert to duodenal fates, making it a key factor in organ specification.
PTF1A may maintain exocrine pancreas-specific gene expression, including elastase 1 and amylase, and is required for acinar and ductal cell formation.
PTF1A has an important role in cerebellar development, and mutations in the gene cause cerebellar agenesis.
The FOXN4-PTF1A pathway directs retinal progenitors towards horizontal and amacrine fates, with PTF1A regulated by FOXN4 and RORC.
PTF1A is a transcription factor that binds the E-box sequence 5'-CANNTG-3' and drives cell fate decisions. It supports pancreatic acinar and ductal cell formation, cerebellar development, and the differentiation of retinal progenitors towards horizontal and amacrine fates.
PTF1A is also called PTF1-p48, p48 and bHLHa29. Its previous HGNC name was pancreas specific transcription factor, 1a. UniProt lists the protein as pancreas transcription factor 1 subunit alpha, reflecting its role as part of the PTF1 complex.
According to the NCBI Gene summary, mutations in PTF1A cause cerebellar agenesis, and loss of its expression is seen in ductal type pancreas cancers. Mouse and rat share a Ptf1a ortholog; check the datasheet of any product for its validated reactivity.
Regulators, exocrine pancreas markers and pathway partners related to PTF1A biology.
Gene and protein annotations from HGNC, NCBI Gene and UniProt Q7RTS3; product specifications from Assay Genie datasheets.