PDX (IPC-257X)

PDX is the Product Data eXchange standard for manufacturing. PDX is a multi-part standard, represented by the IPC 2570 series of specifications.

PDX files are text files in eXtensible Markup Language (XML) format.

PDX files can be used to describe:

The specification of PDX is defined in three specification documents:

IPC-2571

Generic Requirements for Electronics Manufacturing Supply Chain Communication

IPC-2576

Sectional Requirements for Electronics Manufacturing Supply Chain Communication of As-Built Product Data

IPC-2578

Sectional Requirements for Supply Chain Communication of Bill of Material and Product Design Configuration Data

See also

External links

PDX

PDX may refer to:

See also

Xlox

The Xlox genes, also called Pdx genes, are a group of genes found in many, but not all, animals. Xlox genes contain a homeobox DNA sequence and code for proteins that act as transcription factors. The human genome has one Xlox genes, called IPF1, while the orthologous gene in mouse and other vertebrates is called Pdx1. The gene has been lost from the genomes of the fruitfly Drosophila and the nematode Caenorhabditis elegans. In many animals, the Xlox or Pdx gene is part of a ParaHox gene cluster.

References

PDX1

Pdx1 (Pancreatic and duodenal homeobox 1), also known as insulin promoter factor 1, is a transcription factor necessary for pancreatic development, including β-cell maturation, and duodenal differentiation. Pdx1 (in rodents), otherwise known as Ipf1 (in humans), is the gene encoding it.

Function

Pancreatic development

In embryonic development, Pdx1 is expressed by a population of cells in the posterior foregut region of the definitive endoderm, and Pdx1⁺epithelial cells give rise to the developing pancreatic buds, and eventually, the whole of the pancreas—its exocrine, endocrine, and ductal cell populations. Pancreatic Pdx1⁺ cells first arise at mouse embryonic day 8.5-9.0 (E8.5-9.0), and Pdx1 expression continues until E12.0-E12.5, after which Pdx1 expression decreases and the pancreas is formed—other transcription factors are expressed, controlling the fates of the cells of the newly formed pancreas. Homozygous Pdx1 knockout mice form pancreatic buds but fail to develop a pancreas, and transgenic mice in which tetracycline application results in death of Pdx1⁺ cells are almost completely apancreatic if doxycycline (tetracycline derivative) is administered throughout the pregnancy of these transgenic mice, illustrating the necessity of Pdx1⁺ cells in pancreatic development.