Aliases for PGR Gene
External Ids for PGR Gene
Previous GeneCards Identifiers for PGR Gene
This gene encodes a member of the steroid receptor superfamily. The encoded protein mediates the physiological effects of progesterone, which plays a central role in reproductive events associated with the establishment and maintenance of pregnancy. This gene uses two distinct promotors and translation start sites in the first exon to produce two isoforms, A and B. The two isoforms are identical except for the additional 165 amino acids found in the N-terminus of isoform B and mediate their own response genes and physiologic effects with little overlap. [provided by RefSeq, Jan 2011]
GeneCards Summary for PGR Gene
PGR (Progesterone Receptor) is a Protein Coding gene. Diseases associated with PGR include progesterone resistance and endometrial stromal nodule. Among its related pathways are PI-3K cascade and Signaling by GPCR. GO annotations related to this gene include sequence-specific DNA binding and enzyme binding. An important paralog of this gene is AR.
UniProtKB/Swiss-Prot for PGR Gene
The steroid hormones and their receptors are involved in the regulation of eukaryotic gene expression and affect cellular proliferation and differentiation in target tissues. Progesterone receptor isoform B (PRB) is involved activation of c-SRC/MAPK signaling on hormone stimulation
Isoform A: inactive in stimulating c-Src/MAPK signaling on hormone stimulation
Isoform 4: Increases mitochondrial membrane potential and cellular respiration upon stimulation by progesterone
Progesterone receptors (PRs) are nuclear hormone receptors of the NR3C class, which also includes mineralocorticoid, glucocorticoid and androgen receptors. They exist as homodimers coupled to Hsp90 or HMGB proteins, which are shed upon activation. The major signaling pathway used by progesterone receptors is via direct DNA binding and transcriptional regulation of target genes. They can also signal by binding to other proteins, mainly with transcription factors such as NF-kappaB, AP-1 or STAT. Progesterone receptors are found in the female reproductive tract, mammary glands, brain and pituitary gland and receptor expression is induced by estrogen. Well established functions of progesterone receptors include ovulation, implantation, mammary gland development and maintenance of pregnancy. In addition, progesterone, signaling through the progesterone receptor, increases the ventilatory response of the respiratory centers to carbon dioxide and decreases arterial and alveolar PCO2 in the luteal phase of the menstrual cycle and during pregnancy. The human gene encoding the progesterone receptor has been localized to 11q22.