RAR-alfa

S Wikipedije, slobodne enciklopedije
RAR-alfa
Dostupne strukture
PDBPretraga ortologa: PDBe RCSB
Spisak PDB ID kodova

1DKF, 1DSZ, 3A9E, 3KMR, 3KMZ, 4DQM, 5K13

Identifikatori
AliasiRARA
Vanjski ID-jeviOMIM: 180240 MGI: 97856 HomoloGene: 20262 GeneCards: RARA
Lokacija gena (čovjek)
Hromosom 17 (čovjek)
Hrom.Hromosom 17 (čovjek)[1]
Hromosom 17 (čovjek)
Genomska lokacija za RAR-alfa
Genomska lokacija za RAR-alfa
Bend17q21.2Početak40,309,180 bp[1]
Kraj40,357,643 bp[1]
Lokacija gena (miš)
Hromosom 11 (miš)
Hrom.Hromosom 11 (miš)[2]
Hromosom 11 (miš)
Genomska lokacija za RAR-alfa
Genomska lokacija za RAR-alfa
Bend11 D|11 62.76 cMPočetak98,818,644 bp[2]
Kraj98,865,768 bp[2]
Obrazac RNK ekspresije




Više referentnih podataka o ekspresiji
Ontologija gena
Molekularna funkcija retinoic acid binding
GO:0001106 transcription corepressor activity
protein domain specific binding
GO:0001131, GO:0001151, GO:0001130, GO:0001204 DNA-binding transcription factor activity
GO:0038050, GO:0004886, GO:0038051 nuclear receptor activity
mRNA 5'-UTR binding
signaling receptor binding
RNA polymerase II transcription regulatory region sequence-specific DNA binding
retinoic acid-responsive element binding
transcription factor binding
vezivanje iona metala
steroid hormone receptor activity
vezivanje enzima
vezivanje iona cinka
GO:0001948, GO:0016582 vezivanje za proteine
vezivanje sa DNK
sequence-specific DNA binding
GO:0001105 transcription coactivator activity
protein kinase A binding
protein kinase B binding
translation repressor activity, mRNA regulatory element binding
alpha-actinin binding
protein heterodimerization activity
chromatin DNA binding
GO:0001200, GO:0001133, GO:0001201 DNA-binding transcription factor activity, RNA polymerase II-specific
histone deacetylase binding
GO:0000975 transcription cis-regulatory region binding
nuclear receptor coactivator activity
signaling receptor activity
Ćelijska komponenta citoplazma
actin cytoskeleton
perinuklearno područje citoplazme
neuron projection
jedro
cell surface
nukleoplazma
neuronal cell body
dendrit
citosol
RNA polymerase II transcription regulator complex
Biološki proces growth plate cartilage development
germ cell development
cellular response to retinoic acid
ureteric bud development
positive regulation of interleukin-5 production
prostate gland development
limb development
apoptotic cell clearance
chondroblast differentiation
regulation of granulocyte differentiation
protein phosphorylation
response to vitamin A
face development
Spermatogeneza
response to ethanol
negative regulation of cell population proliferation
steroid hormone mediated signaling pathway
regulation of apoptotic process
response to cytokine
negative regulation of translation
GO:0009373 regulation of transcription, DNA-templated
negative regulation of cell differentiation
negative regulation of gene expression
transcription, DNA-templated
cellular response to estrogen stimulus
GO:0060469, GO:0009371 positive regulation of transcription, DNA-templated
positive regulation of cell cycle
regulation of myelination
positive regulation of neuron differentiation
negative regulation of tumor necrosis factor production
transcription initiation from RNA polymerase II promoter
trachea cartilage development
glandular epithelial cell development
male gonad development
negative regulation of cartilage development
response to retinoic acid
negative regulation of granulocyte differentiation
multicellular organism growth
female pregnancy
negative regulation of apoptotic process
GO:1901227 negative regulation of transcription by RNA polymerase II
positive regulation of interleukin-4 production
regulation of synaptic plasticity
outflow tract septum morphogenesis
GO:0045996 negative regulation of transcription, DNA-templated
negative regulation of interferon-gamma production
response to estradiol
negative regulation of translational initiation
embryonic camera-type eye development
positive regulation of interleukin-13 production
neural tube closure
positive regulation of binding
retinoic acid receptor signaling pathway
GO:1901313 positive regulation of gene expression
Sertoli cell fate commitment
positive regulation of cell population proliferation
positive regulation of T-helper 2 cell differentiation
ventricular cardiac muscle cell differentiation
liver development
cellular response to lipopolysaccharide
bone development
hippocampus development
GO:0072468 Transdukcija signala
GO:0003257, GO:0010735, GO:1901228, GO:1900622, GO:1904488 positive regulation of transcription by RNA polymerase II
multicellular organism development
hormone-mediated signaling pathway
Ćelijska diferencijacija
response to lipid
gland development
bone morphogenesis
epithelium development
Izvori:Amigo / QuickGO
Ortolozi
VrsteČovjekMiš
Entrez
Ensembl
UniProt
RefSeq (mRNK)

NM_000964
NM_001024809
NM_001033603
NM_001145301
NM_001145302

NM_001176528
NM_001177302
NM_001177303
NM_009024
NM_001361954

RefSeq (bjelančevina)
NP_000955
NP_001019980
NP_001138773
NP_001138774
NP_000955.1

NP_001138773.1

NP_001169999
NP_001170773
NP_001170774
NP_033050
NP_001348883

Lokacija (UCSC)Chr 17: 40.31 – 40.36 MbChr 11: 98.82 – 98.87 Mb
PubMed pretraga[3][4]
Wikipodaci
Pogledaj/uredi – čovjekPogledaj/uredi – miš

Receptor alfa retinojske kiseline (RAR-α), znan i kao NR1B1 (član 1 grupe B potporodice 1 jedarnih receptora) jest jedarni receptorski protein koji je kod ljudi kodiran genom RARA sa hromosoma 17.[5][6]

NR1B1 je gen sa proteinskim proizvodom i ima hromosomsku lokaciju 17q21.2. RARA kodira receptora jedarnog hormona, receptor retinojske kiseline, podtip alfa i sam je transkripcijski faktor. Postoje još dva podtipa RAR-a, beta i gama.[7][8]

Aminokiselinska sekvenca[uredi | uredi izvor]

Dužina polipeptidnog lanca je 462 [[ aminokiseline, a molekulska težina 50.771 Da.

1020304050
MASNSSSCPTPGGGHLNGYPVPPYAFFFPPMLGGLSPPGALTTLQHQLPV
SGYSTPSPATIETQSSSSEEIVPSPPSPPPLPRIYKPCFVCQDKSSGYHY
GVSACEGCKGFFRRSIQKNMVYTCHRDKNCIINKVTRNRCQYCRLQKCFE
VGMSKESVRNDRNKKKKEVPKPECSESYTLTPEVGELIEKVRKAHQETFP
ALCQLGKYTTNNSSEQRVSLDIDLWDKFSELSTKCIIKTVEFAKQLPGFT
TLTIADQITLLKAACLDILILRICTRYTPEQDTMTFSDGLTLNRTQMHNA
GFGPLTDLVFAFANQLLPLEMDDAETGLLSAICLICGDRQDLEQPDRVDM
LQEPLLEALKVYVRKRRPSRPHMFPKMLMKITDLRSISAKGAERVITLKM
EIPGSMPPLIQEMLENSEGLDTLSGQPGGGGRDGGGLAPPPGSCSPSLSP
SSNRSSPATHSP

Funkcija[uredi | uredi izvor]

Retinoidnu signalizaciju transduciraju članovi dvije porodice jedarnih receptora, receptor retinojske kiseline (RAR) i retinoidnui X-receptor (RXR), koji formiraju RXR/RAR heterodimere. U nedostatku liganda, DNK vezani RXR/RARA potiskuje transkripciju, regrutacijom korepresora NCOR1, SMRT (NCOR2), i histon-deacetilaze. Kada se ligand veže za kompleks, inducira konformacijsku promjenu koja omogućava regrutovanje koaktivatora, histon-acetiltransferaza i osnovnog transkripcijskog mehanizma.[9]

Receptor retinoične kiseline alfa, protein, stupa u interakciju sa retinojskom kiselinom, derivatom vitamina A, koji ima važnu ulogu u rastu ćelija, diferencijaciji i formiranju organa u razvoju embriona.[8][10]

Kada se retinoična kiselina veže za RAR, oni pokreću transkripciju i omogućavaju ekspresiju njihovog gena.[10]

Klinički značaj[uredi | uredi izvor]

RA signalizacija je u korelacijama sa nekoliko signalnih puteva u ranom embrionskom razvoju. Prvo, učestvuje u formiranju embrionske osovine, koja uspostavlja simetriju u potomstvu. RA također utiče na nervnu diferencijaciju. regulacijom ekspresije proneurvnog indukcionog faktora meurogenina 2 (neurog2). RA utiče na kardiogenezu, jer ima posebnu ulogu u formiranju srčane pretkomore. RA također ima ulogu u razvoju pankreasa, bubrega, pluća i ekstremiteta.[10]

Translokacije koje uvijek uključuju preuređivanje gena RARA su kardinalna karakteristika akutne promijelocitne leukemije (APL; MIM 612376). Najčešća translokacija je t(15,17)(q21;q22), koja spaja gen RARA sa genom PML.[11]

Interakcije[uredi | uredi izvor]

Pokazalo se da receptor alfa retinojske kiseline reaguje sa:

Genetic Studies[uredi | uredi izvor]

Knock-out mice studies showed that a deletion in one of the copies of the RARA gene did not create any observable defect, while deletion of both copies shoes symptoms similar to that of Vitamin A deficiency. This proved that all 3 subtypes of RARs work redundantly.

See also[uredi | uredi izvor]

Reference[uredi | uredi izvor]

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000131759 - Ensembl, maj 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000037992 - Ensembl, maj 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Giguere V, Ong ES, Segui P, Evans RM (1987). "Identification of a receptor for the morphogen retinoic acid". Nature. 330 (6149): 624–9. Bibcode:1987Natur.330..624G. doi:10.1038/330624a0. PMID 2825036. S2CID 4308015.
  6. ^ Anderson LA, Friedman L, Osborne-Lawrence S, Lynch E, Weissenbach J, Bowcock A, King MC (septembar 1993). "High-density genetic map of the BRCA1 region of chromosome 17q12-q21". Genomics. 17 (3): 618–23. doi:10.1006/geno.1993.1381. PMID 8244378.
  7. ^ "Gene symbol report | HUGO Gene Nomenclature Committee". www.genenames.org. Pristupljeno 27. 4. 2021.
  8. ^ a b "OMIM Entry - * 180240 - RETINOIC ACID RECEPTOR, ALPHA; RARA". www.omim.org. Pristupljeno 27. 4. 2021.
  9. ^ "Entrez Gene: retinoic acid receptor".
  10. ^ a b c Kam RK, Deng Y, Chen Y, Zhao H (mart 2012). "Retinoic acid synthesis and functions in early embryonic development". Cell & Bioscience. 2 (1): 11. doi:10.1186/2045-3701-2-11. PMC 3325842. PMID 22439772.
  11. ^ Vitoux D, Nasr R, de The H (2007). "Acute promyelocytic leukemia: new issues on pathogenesis and treatment response". The International Journal of Biochemistry & Cell Biology. 39 (6): 1063–70. doi:10.1016/j.biocel.2007.01.028. PMID 17468032.
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  19. ^ Guidez F, Ivins S, Zhu J, Söderström M, Waxman S, Zelent A (april 1998). "Reduced retinoic acid-sensitivities of nuclear receptor corepressor binding to PML- and PLZF-RARalpha underlie molecular pathogenesis and treatment of acute promyelocytic leukemia". Blood. 91 (8): 2634–42. doi:10.1182/blood.V91.8.2634.2634_2634_2642. PMID 9531570.
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  21. ^ Hong SH, David G, Wong CW, Dejean A, Privalsky ML (august 1997). "SMRT corepressor interacts with PLZF and with the PML-retinoic acid receptor alpha (RARalpha) and PLZF-RARalpha oncoproteins associated with acute promyelocytic leukemia". Proceedings of the National Academy of Sciences of the United States of America. 94 (17): 9028–33. Bibcode:1997PNAS...94.9028H. doi:10.1073/pnas.94.17.9028. PMC 23013. PMID 9256429.
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Dopunska literatura[uredi | uredi izvor]

Vanjski linkovi[uredi | uredi izvor]

Šablon:Modulatori retinoidnog receptora Ovaj članak uključuje tekst iz Nacionalne medicinske biblioteke Sjedinjenih Država, koji je u javnom vlasništvu.