Anti-Progesterone Receptor/PGR Antibody Picoband®

The progesterone receptor (PR) is an intracellular steroid receptor that specially binds progesterone in humans. PR has been a member of the steroid receptor superfamily. It is encoded by a single PGR gene residing on chromosome 11q22. The PGR gene uses separate promoters and translational start sites to produce 2 isoforms, PRA and PRB, which are identical except for an additional 165 amino acids present only in the N terminus of PRB. It can be observed in human breast tissues. The proteins function as dimeric molecules in nuclei to regulate the transcription of target genes in a ligand-responsive manner.

E.coli-derived human Progesterone Receptor recombinant protein (Position: M595-K933) . Human Progesterone Receptor shares 95% and 94% amino acid (aa) sequences identity with mouse and rat Progesterone Receptor, respectively.

Ubiquitous. Isoforms are expressed in a wide range of normal tissues but in a tissue-dependent manner. Isoform 2 is expressed in most normal tissues but is not detected in brain, lung, prostate, muscle, fetal brain, spinal cord and fetal liver. Isoform 3 is expressed in most normal tissues but is not detected in lung, spleen, testis, fetal brain, spinal cord and fetal liver. Isoform 7 is expressed in most normal tissues but is not detected in prostate, uterus, skeletal muscle and breast. Isoform 8 is detected only in colon, bone marrow, testis, fetal brain and intestine. Isoform 9 is expressed in most normal tissues but is not detected in brain, heart, lung, fetal liver, salivary gland, breast or intestine. .

Cancer, Domain Families, Endocrine System, Epigenetics and Nuclear Signaling, Neuroscience, Nuclear Hormone Receptors, Nuclear Receptors, Nuclear Signaling Pathways, Signal Transduction, Signaling Pathway, Transcription, Tumor Biomarkers, Zinc Finger

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.

1. Misrahi M, Atger M, d'Auriol L, Loosfelt H, Meriel C, Fridlansky F, Guiochon-Mantel A, Galibert F, Milgrom E (March 1987) . Complete amino acid sequence of the human progesterone receptor deduced from cloned cDNA. Biochem. Biophys. Res. Commun. 143 (2) : 740–8. 2. Law ML, Kao FT, Wei Q, Hartz JA, Greene GL, Zarucki-Schulz T, Conneely OM, Jones C, Puck TT, O'Malley BW (May 1987) . The progesterone receptor gene maps to human chromosome band 11q13, the site of the mammary oncogene int-2. Proc. Natl. Acad. Sci. U.S.A. 84 (9) : 2877–81. doi:10.1073/pnas.84.9.2877. PMC 304763. PMID 3472240. 3. Nishihara T, Kitaura M, Imagawa M, Nishikawa J (1995) . Vitamin D receptor contains multiple dimerization interfaces that are functionally different. Nucleic Acids Res. 23 (4) : 606–611. 4. Schmitt J, De Vos P, Verhoeven G, Stunnenberg HG (1994) . Human androgen receptor expressed in HeLa cells activates transcription in vitro. Nucleic Acids Res. 22 (7) : 1161–1166.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.

Nucleus. Cytoplasm. Nucleoplasmic shuttling is both homone- and cell cycle-dependent. On hormone stimulation, retained in the cytoplasm in the G (1) and G (2) /M phases.