Paired box transcription factor protein
PAX7 |
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Identifiers |
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Aliases | PAX7, HUP1, PAX7B, RMS2, Pax7, paired box 7, MYOSCO |
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External IDs | OMIM: 167410 MGI: 97491 HomoloGene: 55665 GeneCards: PAX7 |
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Gene location (Human) |
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| Chr. | Chromosome 1 (human)[1] |
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| Band | 1p36.13 | Start | 18,630,846 bp[1] |
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End | 18,748,866 bp[1] |
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Gene location (Mouse) |
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| Chr. | Chromosome 4 (mouse)[2] |
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| Band | 4 D3|4 70.83 cM | Start | 139,464,373 bp[2] |
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End | 139,560,839 bp[2] |
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RNA expression pattern |
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Bgee | Human | Mouse (ortholog) |
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Top expressed in | - gastrocnemius muscle
- prefrontal cortex
- skeletal muscle tissue
- Brodmann area 9
- cingulate gyrus
- superior frontal gyrus
- substantia nigra
- hypothalamus
- hippocampus proper
- amygdala
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| Top expressed in | - superior colliculus
- somite
- dorsal tegmental nucleus
- urethra
- pretectal area
- main bronchus
- pituitary gland
- lateral nasal prominence
- tongue
- extraocular muscle
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| More reference expression data |
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BioGPS | | More reference expression data |
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Gene ontology |
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Molecular function | - sequence-specific DNA binding
- DNA binding
- DNA-binding transcription factor activity
- RNA polymerase II general transcription initiation factor activity
- DNA-binding transcription factor activity, RNA polymerase II-specific
| Cellular component | | Biological process | - positive regulation of myoblast proliferation
- regulation of cell fate commitment
- chromatin remodeling
- regulation of transcription, DNA-templated
- spinal cord association neuron differentiation
- positive regulation of histone methylation
- anatomical structure morphogenesis
- muscle organ development
- negative regulation of apoptotic process
- transcription, DNA-templated
- embryonic skeletal system development
- multicellular organism development
- cartilage development
- skeletal muscle tissue regeneration
- muscle tissue morphogenesis
- regulation of gene expression
- neuron fate commitment
- skeletal muscle satellite cell commitment
- dorsal/ventral neural tube patterning
- regulation of protein binding
- skeletal muscle tissue development
- positive regulation of transcription by RNA polymerase II
- transcription by RNA polymerase II
- regulation of DNA binding
| Sources:Amigo / QuickGO |
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Orthologs |
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Species | Human | Mouse |
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Entrez | | |
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Ensembl | | |
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UniProt | | |
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RefSeq (mRNA) | |
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NM_013945 NM_001135254 NM_002584 |
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RefSeq (protein) | |
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NP_001128726 NP_002575 NP_039236 |
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Location (UCSC) | Chr 1: 18.63 – 18.75 Mb | Chr 4: 139.46 – 139.56 Mb |
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PubMed search | [3] | [4] |
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Wikidata |
View/Edit Human | View/Edit Mouse |
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Paired box protein Pax-7 is a protein that in humans is encoded by the PAX7 gene.[5][6][7]
Function
Pax-7 plays a role in neural crest development and gastrulation, and it is an important factor in the expression of neural crest markers such as Slug, Sox9, Sox10 and HNK-1.[8] PAX7 is expressed in the palatal shelf of the maxilla, Meckel's cartilage, mesencephalon, nasal cavity, nasal epithelium, nasal capsule and pons.
Pax7 is a transcription factor that plays a role in myogenesis through regulation of muscle precursor cells proliferation. It can bind to DNA as an heterodimer with PAX3. Also interacts with PAXBP1; the interaction links PAX7 to a WDR5-containing histone methyltransferase complex By similarity. Interacts with DAXX too.[9]
PAX7 functions as a marker for a rare subset of spermatogonial stem cells, specifically a sub set of Asingle spermatogonia.[10] These PAX7+ spermatogonia are rare in adult testis but are much more prevalent in newborns, making up 28% of germ cells in neonate testis.[10] Unlike PAX7+ muscle satellite cells, PAX7+ spermatogonia rapidly proliferate and are not quiescent.[10][11] PAX7+ spermatogonia are able to give rise to all stages of spermatogenesis and produce motile sperm.[10] However, PAX7 is not required for spermatogenesis, as mice without PAX7+ spermatogonia show no deficits in fertility.[10]
PAX7 may also function in the recovery in spermatogenesis. Unlike other spermatogonia, PAX7+ spermatogonia are resistant to radiation and chemotherapy.[10] The surviving PAX7+ spermatogonia are able to increase in number following these therapies and differentiate into the other forms of spermatogonia that did not survive.[10] Additionally, mice lacking PAX7 had delayed recovery of spermatogenesis following exposure to busulfan when compared to control mice.[10]
Clinical significance
Pax proteins play critical roles during fetal development and cancer growth. The specific function of the paired box gene 7 is unknown but speculated to involve tumor suppression since fusion of this gene with a forkhead domain family member has been associated with alveolar rhabdomyosarcoma. Alternative splicing in this gene has produced two known products but the biological significance of the variants is unknown.[7] Animal studies show that mutant mice have malformation of maxilla and the nose.[12]
See also
References
- ^ a b c GRCh38: Ensembl release 89: ENSG00000009709 – Ensembl, May 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000028736 – Ensembl, May 2017
- ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ Stapleton P, Weith A, Urbánek P, Kozmik Z, Busslinger M (April 1993). "Chromosomal localization of seven PAX genes and cloning of a novel family member, PAX-9". Nature Genetics. 3 (4): 292–8. doi:10.1038/ng0493-292. PMID 7981748. S2CID 21338655.
- ^ Pilz AJ, Povey S, Gruss P, Abbott CM (March 1993). "Mapping of the human homologs of the murine paired-box-containing genes". Mammalian Genome. 4 (2): 78–82. doi:10.1007/BF00290430. PMID 8431641. S2CID 30845070.
- ^ a b "Entrez Gene: PAX7 paired box gene 7".
- ^ Basch ML, Bronner-Fraser M, García-Castro MI (May 2006). "Specification of the neural crest occurs during gastrulation and requires Pax7". Nature. 441 (7090): 218–22. Bibcode:2006Natur.441..218B. doi:10.1038/nature04684. PMID 16688176. S2CID 4418753.
- ^ "PAX7 - Paired box protein Pax-7 - Homo sapiens (Human) - PAX7 gene & protein".
- ^ a b c d e f g h Aloisio GM, Nakada Y, Saatcioglu HD, Peña CG, Baker MD, Tarnawa ED, Mukherjee J, Manjunath H, Bugde A (2 September 2014). "PAX7 expression defines germline stem cells in the adult testis". The Journal of Clinical Investigation. 124 (9): 3929–3944. doi:10.1172/JCI75943. ISSN 0021-9738. PMC 4153705. PMID 25133429.
- ^ Kumar TR (1 October 2014). "The quest for male germline stem cell markers: PAX7 gets ID'd". The Journal of Clinical Investigation. 124 (10): 4219–4222. doi:10.1172/JCI77926. ISSN 0021-9738. PMC 4191048. PMID 25157826.
- ^ Mansouri A, Stoykova A, Torres M, Gruss P (March 1996). "Dysgenesis of cephalic neural crest derivatives in Pax7-/- mutant mice". Development. 122 (3): 831–8. doi:10.1242/dev.122.3.831. hdl:11858/00-001M-0000-0013-01BC-0. PMID 8631261.
Further reading
- Blake J, Ziman MR (April 2003). "Aberrant PAX3 and PAX7 expression. A link to the metastatic potential of embryonal rhabdomyosarcoma and cutaneous malignant melanoma?". Histology and Histopathology. 18 (2): 529–39. PMID 12647804.
- Burri M, Tromvoukis Y, Bopp D, Frigerio G, Noll M (April 1989). "Conservation of the paired domain in metazoans and its structure in three isolated human genes". The EMBO Journal. 8 (4): 1183–90. doi:10.1002/j.1460-2075.1989.tb03490.x. PMC 400932. PMID 2501086.
- Schäfer BW, Czerny T, Bernasconi M, Genini M, Busslinger M (November 1994). "Molecular cloning and characterization of a human PAX-7 cDNA expressed in normal and neoplastic myocytes". Nucleic Acids Research. 22 (22): 4574–82. doi:10.1093/nar/22.22.4574. PMC 308503. PMID 7527137.
- Shapiro DN, Sublett JE, Li B, Valentine MB, Morris SW, Noll M (September 1993). "The gene for PAX7, a member of the paired-box-containing genes, is localized on human chromosome arm 1p36". Genomics. 17 (3): 767–9. doi:10.1006/geno.1993.1404. PMID 7902328.
- Cross SH, Charlton JA, Nan X, Bird AP (March 1994). "Purification of CpG islands using a methylated DNA binding column". Nature Genetics. 6 (3): 236–44. doi:10.1038/ng0394-236. PMID 8012384. S2CID 12847618.
- Schäfer BW, Mattei MG (July 1993). "The human paired domain gene PAX7 (Hup1) maps to chromosome 1p35-1p36.2". Genomics. 17 (1): 249–51. doi:10.1006/geno.1993.1315. PMID 8104868.
- Barr FG, Nauta LE, Davis RJ, Schäfer BW, Nycum LM, Biegel JA (January 1996). "In vivo amplification of the PAX3-FKHR and PAX7-FKHR fusion genes in alveolar rhabdomyosarcoma" (PDF). Human Molecular Genetics. 5 (1): 15–21. doi:10.1093/hmg/5.1.15. PMID 8789435.
- Vorobyov E, Mertsalov I, Dockhorn-Dworniczak B, Dworniczak B, Horst J (October 1997). "The genomic organization and the full coding region of the human PAX7 gene". Genomics. 45 (1): 168–74. doi:10.1006/geno.1997.4915. PMID 9339373.
- Magnaghi P, Roberts C, Lorain S, Lipinski M, Scambler PJ (September 1998). "HIRA, a mammalian homologue of Saccharomyces cerevisiae transcriptional co-repressors, interacts with Pax3". Nature Genetics. 20 (1): 74–7. doi:10.1038/1739. PMID 9731536. S2CID 19736941.
- Margue CM, Bernasconi M, Barr FG, Schäfer BW (June 2000). "Transcriptional modulation of the anti-apoptotic protein BCL-XL by the paired box transcription factors PAX3 and PAX3/FKHR". Oncogene. 19 (25): 2921–9. doi:10.1038/sj.onc.1203607. PMID 10871843. S2CID 23943294.
- Kondrashov AV, Pospelov VA (2002). "[In vitro modelling of the interactions between the promoter and enhancer complexes]". Tsitologiia. 43 (8): 764–71. PMID 11601392.
- Sorensen PH, Lynch JC, Qualman SJ, Tirabosco R, Lim JF, Maurer HM, Bridge JA, Crist WM, Triche TJ, Barr FG (June 2002). "PAX3-FKHR and PAX7-FKHR gene fusions are prognostic indicators in alveolar rhabdomyosarcoma: a report from the children's oncology group". Journal of Clinical Oncology. 20 (11): 2672–9. doi:10.1200/JCO.2002.03.137. PMID 12039929.
- Syagailo YV, Okladnova O, Reimer E, Grässle M, Mössner R, Gattenlöhner S, Marx A, Meyer J, Lesch KP (July 2002). "Structural and functional characterization of the human PAX7 5'-flanking regulatory region". Gene. 294 (1–2): 259–68. doi:10.1016/S0378-1119(02)00798-9. PMID 12234688.
- Tiffin N, Williams RD, Shipley J, Pritchard-Jones K (July 2003). "PAX7 expression in embryonal rhabdomyosarcoma suggests an origin in muscle satellite cells". British Journal of Cancer. 89 (2): 327–32. doi:10.1038/sj.bjc.6601040. PMC 2394255. PMID 12865925.
- Tomescu O, Xia SJ, Strezlecki D, Bennicelli JL, Ginsberg J, Pawel B, Barr FG (August 2004). "Inducible short-term and stable long-term cell culture systems reveal that the PAX3-FKHR fusion oncoprotein regulates CXCR4, PAX3, and PAX7 expression". Laboratory Investigation. 84 (8): 1060–70. doi:10.1038/labinvest.3700125. PMID 15184910.
- Vorobyov E, Horst J (November 2004). "Expression of two protein isoforms of PAX7 is controlled by competing cleavage-polyadenylation and splicing". Gene. 342 (1): 107–12. doi:10.1016/j.gene.2004.07.030. PMID 15527970.
External links
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
(1) Basic domains |
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(1.1) Basic leucine zipper (bZIP) | |
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(1.2) Basic helix-loop-helix (bHLH) | Group A | |
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Group B | |
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Group C bHLH-PAS | |
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Group D | |
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Group E | |
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Group F bHLH-COE | |
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(1.3) bHLH-ZIP | |
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(1.4) NF-1 | |
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(1.5) RF-X | |
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(1.6) Basic helix-span-helix (bHSH) | |
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(2) Zinc finger DNA-binding domains |
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(2.1) Nuclear receptor (Cys4) | subfamily 1 | |
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subfamily 2 | |
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subfamily 3 | |
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subfamily 4 | |
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subfamily 5 | |
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subfamily 6 | |
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subfamily 0 | |
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(2.2) Other Cys4 | |
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(2.3) Cys2His2 | |
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(2.4) Cys6 | |
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(2.5) Alternating composition | |
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(2.6) WRKY | |
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(4) β-Scaffold factors with minor groove contacts |
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(0) Other transcription factors |
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see also transcription factor/coregulator deficiencies |