Histone deacetylase 2






























HDAC2


Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
Aliases
HDAC2, HD2, RPD3, YAF1, histone deacetylase 2
External IDsMGI: 1097691 HomoloGene: 68187 GeneCards: HDAC2








Gene location (Human)
Chromosome 6 (human)
Chr.Chromosome 6 (human)[1]

Chromosome 6 (human)
Genomic location for HDAC2

Genomic location for HDAC2

Band6q21Start113,933,028 bp[1]
End114,011,308 bp[1]









RNA expression pattern
PBB GE HDAC2 201833 at fs.png
More reference expression data






Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001527

NM_008229

RefSeq (protein)

NP_001518

NP_032255

Location (UCSC)Chr 6: 113.93 – 114.01 MbChr 10: 36.97 – 37 Mb

PubMed search
[3][4]
Wikidata


View/Edit HumanView/Edit Mouse

Histone deacetylase 2 (HDAC2) is an enzyme that in humans is encoded by the HDAC2 gene.[5] It belongs to the Histone deacetylase class of enzymes responsible for the removal of acetyl groups from lysine residues at the N-terminal region of the core histones (H2A,H2B,H3, and H4). As such, it plays an important role in gene expression by facilitating the formation of transcription repressor complexes and for this reason is often considered an important target for cancer therapy.[6]


Though the functional role of the class to which HDAC2 belongs has been carefully studied, the mechanism by which HDAC2 interacts with other Histone deacetylases of other classes has yet to be elucidated. HDAC2 is broadly regulated by protein kinase 2 (CK2) and protein phosphatase 1 (PP1), but biochemical analysis suggests its regulation is more complex (evinced by the coexistence of HDAC1 and HDAC2 in three distinct protein complexes).[7] Essentially, the mechanism by which HDAC2 is regulated is still unclear by virtue of its various interactions, though a mechanism involving p300/CBP-associated factor and HDAC5 has been proposed in the context of cardiac reprogramming.[8]


Generally, HDAC2 is considered a putative target for the treatment for a variety of diseases, due to its involvement in key cell cycle progressions. Specifically, HDAC2 has been shown to play a role in cardiac hypertrophy,[8]Alzheimer's disease,[9]Parkinson's Disease,[10]acute myeloid leukemia (AML)[11]osteosarcoma,[12] and Gastric Cancer.[13]




Contents





  • 1 Structure and Mechanism


  • 2 Function


  • 3 Disease Relevance

    • 3.1 Cardiac Hypertrophy


    • 3.2 Alzheimer's Disease


    • 3.3 Parkinson's Disease


    • 3.4 Cancer Therapy



  • 4 Interactions


  • 5 See also


  • 6 References


  • 7 Further reading


  • 8 External links




Structure and Mechanism




This image shows the structure of the HDAC2 enzyme. The two consecutive benzene rings form the foot pocket, where as the single benzene rings forms the lipophilic tube.


HDAC2 belongs to the first class of Histone deactylases. The active site of HDAC2 contains a Zn2+ metal ion coordinated to the carbonyl group of a lysine substrate and a water molecule. The metallic ion facilitates the nucleophilic attack of the carbonyl group by a coordinated water molecule, leading to the formation of a tetrahedral intermediate. This intermediate is momentarily stabilized by hydrogen bond interactions and metal coordination, until it ultimately collapses resulting in the deacetylation of the lysine residue.[14]


The HDAC2 active site consists of a lipophilic tube which leads from the surface to the catalytic center, and a 'foot pocket' containing mostly water molecules. The active site is connected to Gly154, Phe155, His183, Phe210, and Leu276. The footpocket is connected to Tyr29, Met35, Phe114, and Leu144.[15]



Function


This gene product belongs to the histone deacetylase family. Histone deacetylases act via the formation of large multiprotein complexes and are responsible for the deacetylation of lysine residues on the N-terminal region of the core histones (H2A, H2B, H3 and H4). This protein also forms transcriptional repressor complexes by associating with many different proteins, including YY1, a mammalian zinc-finger transcription factor. Thus it plays an important role in transcriptional regulation, cell cycle progression and developmental events.[16]



Disease Relevance



Cardiac Hypertrophy



HDAC2 has been shown to play a role in the regulatory pathway of cardiac hypertrophy. Deficiencies in HDAC2 were shown to mitigate cardiac hypertrophy in hearts exposed to hypertrophic stimuli. However, in HDAC2 transgenic mice with inactivated glycogen synthase kinase 3beta (Gsk3beta), hypertrophy was observed at a higher frequency. In mice with activated Gsk3beta enzymes and HDAC2 deficiencies, sensitivity to hypertrophic stimulus was observed at a higher rate. The results suggest regulatory roles of HDAC2 and GSk3beta.[17]




The HDAC2 enzyme attacking a lysine residue.


Mechanisms by which HDAC2 responds to hypertrophic stress have been proposed, though no general consensus has been met. One suggested mechanism puts forth casein kinase dependent phosphorylation of HDAC2, while a more recent mechanism suggests acetylation regulated by p300/CBP-associated factor and HDAC5.[8]



Alzheimer's Disease


It has been found that patients with Alzheimer's Disease experience a decrease in the expression of neuronal genes.[18] Furthermore, a recent study found that inhibition of HDAC2 via c-Abl by tyrosine phosphorylation prevented cognitive and behavioral impairments in mice with Alzheimer's Disease.[19] The results of the study support the role of c-Abl and HDAC2 in the signaling pathway of gene expression in patients with Alzheimer's Disease. Currently, efforts to synthesize an HDAC2 inhibitor for the treatment of Alzheimer's Disease are based on a pharmacophore with four features: one Hydrogen Bond Acceptor, one Hydrogen Bond Donor, and two Aromatic Rings.[9]



Parkinson's Disease


HDAC inhibitors have been regarded as a potential treatment of neurodegenerative diseases such as Parkinson's Disease. Parkinson's Disease is usually accompanied by an increase in the number of microglial protein in the substantia Nigra of the brain. In vivo evidence has shown a correlation between the number of microglial proteins and the upregulation of HDAC2.[10] It is thought therefore that HDAC2 inhibitors could be effective in treating microglial-initiated dopaminergic loss of neurons in the brain.



Cancer Therapy


The role of HDAC2 in various forms of cancer such as osteosarcoma, gastric cancer, and acute myeloid leukemia have been studied. Current research is focused on creating inhibitors that decrease the upregulation of HDAC2.



Interactions


Histone deacetylase 2 has been shown to interact with:




  • Ataxia telangiectasia and Rad3 related,[20]


  • BUB3,[21]


  • CDC20,[21]


  • CDH1,[21]


  • CHD3,[22][23][24]


  • CHD4,[20][22][23]


  • DNMT1,[25]


  • EED,[26]


  • EZH2[26] and


  • FKBP3,[27]


  • GATA4,[28]


  • GTF2I,[22][29]


  • HDAC10,[30]


  • HDAC1,[22][23][26][30][31][32][33][34][35][36][37][38][39]


  • HMG20B,[22][32]


  • HSPA4,[33]


  • Host cell factor C1,[40]


  • MTA1,[22][31][41]


  • MTA2,[22][31][37]


  • MXD1,[42][43]


  • Mad1,[21]


  • Methyl-CpG-binding domain protein 2,[37][44][45]


  • PHF21A,[22][32][46]


  • PPP1R8,[47]


  • RBBP4,[22][23][48][49]


  • RCOR1,[32][50]


  • RELA,[51][52]


  • Retinoblastoma protein,[53]


  • SAP30,[37][54][55]


  • SIN3A,[22][23][42][48][49][56][57]


  • SMARCA5,[24]


  • SNW1,[58]


  • SUV39H1,[59]


  • Sp1 transcription factor,[49][60][61]


  • Sp3 transcription factor,[60][61]


  • TOP2B,[62] and


  • YY1.[63][64][65]



See also


  • Histone deacetylase


References




  1. ^ abc GRCh38: Ensembl release 89: ENSG00000196591 - Ensembl, May 2017


  2. ^ abc GRCm38: Ensembl release 89: ENSMUSG00000019777 - Ensembl, May 2017


  3. ^ "Human PubMed Reference:"..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  4. ^ "Mouse PubMed Reference:".


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Further reading


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  • Ahringer J (August 2000). "NuRD and SIN3 histone deacetylase complexes in development". Trends in Genetics. 16 (8): 351–6. doi:10.1016/S0168-9525(00)02066-7. PMID 10904264.


  • Verdin E, Dequiedt F, Kasler HG (May 2003). "Class II histone deacetylases: versatile regulators". Trends in Genetics. 19 (5): 286–93. doi:10.1016/S0168-9525(03)00073-8. PMID 12711221.


  • Zhang Y, Dufau ML (June 2003). "Dual mechanisms of regulation of transcription of luteinizing hormone receptor gene by nuclear orphan receptors and histone deacetylase complexes". The Journal of Steroid Biochemistry and Molecular Biology. 85 (2–5): 401–14. doi:10.1016/S0960-0760(03)00230-9. PMID 12943729.


  • Furukawa Y, Kawakami T, Sudo K, Inazawa J, Matsumine A, Akiyama T, Nakamura Y (1996). "Isolation and mapping of a human gene (RPD3L1) that is homologous to RPD3, a transcription factor in Saccharomyces cerevisiae". Cytogenetics and Cell Genetics. 73 (1–2): 130–3. doi:10.1159/000134323. PMID 8646880.


  • Yang WM, Inouye C, Zeng Y, Bearss D, Seto E (November 1996). "Transcriptional repression by YY1 is mediated by interaction with a mammalian homolog of the yeast global regulator RPD3". Proceedings of the National Academy of Sciences of the United States of America. 93 (23): 12845–50. doi:10.1073/pnas.93.23.12845. PMC 24008. PMID 8917507.


  • Laherty CD, Yang WM, Sun JM, Davie JR, Seto E, Eisenman RN (May 1997). "Histone deacetylases associated with the mSin3 corepressor mediate mad transcriptional repression". Cell. 89 (3): 349–56. doi:10.1016/S0092-8674(00)80215-9. PMID 9150134.


  • Zhang Y, Iratni R, Erdjument-Bromage H, Tempst P, Reinberg D (May 1997). "Histone deacetylases and SAP18, a novel polypeptide, are components of a human Sin3 complex". Cell. 89 (3): 357–64. doi:10.1016/S0092-8674(00)80216-0. PMID 9150135.


  • Yang WM, Yao YL, Sun JM, Davie JR, Seto E (October 1997). "Isolation and characterization of cDNAs corresponding to an additional member of the human histone deacetylase gene family". The Journal of Biological Chemistry. 272 (44): 28001–7. doi:10.1074/jbc.272.44.28001. PMID 9346952.


  • Hassig CA, Tong JK, Fleischer TC, Owa T, Grable PG, Ayer DE, Schreiber SL (March 1998). "A role for histone deacetylase activity in HDAC1-mediated transcriptional repression". Proceedings of the National Academy of Sciences of the United States of America. 95 (7): 3519–24. doi:10.1073/pnas.95.7.3519. PMC 19868. PMID 9520398.


  • Randhawa GS, Bell DW, Testa JR, Feinberg AP (July 1998). "Identification and mapping of human histone acetylation modifier gene homologues". Genomics. 51 (2): 262–9. doi:10.1006/geno.1998.5370. PMID 9722949.


  • Zhang Y, LeRoy G, Seelig HP, Lane WS, Reinberg D (October 1998). "The dermatomyositis-specific autoantigen Mi2 is a component of a complex containing histone deacetylase and nucleosome remodeling activities". Cell. 95 (2): 279–89. doi:10.1016/S0092-8674(00)81758-4. PMID 9790534.


  • Tong JK, Hassig CA, Schnitzler GR, Kingston RE, Schreiber SL (October 1998). "Chromatin deacetylation by an ATP-dependent nucleosome remodelling complex". Nature. 395 (6705): 917–21. doi:10.1038/27699. PMID 9804427.


  • Hsieh JJ, Zhou S, Chen L, Young DB, Hayward SD (January 1999). "CIR, a corepressor linking the DNA binding factor CBF1 to the histone deacetylase complex". Proceedings of the National Academy of Sciences of the United States of America. 96 (1): 23–8. doi:10.1073/pnas.96.1.23. PMC 15086. PMID 9874765.


  • Yarden RI, Brody LC (April 1999). "BRCA1 interacts with components of the histone deacetylase complex". Proceedings of the National Academy of Sciences of the United States of America. 96 (9): 4983–8. doi:10.1073/pnas.96.9.4983. PMC 21803. PMID 10220405.


  • Koipally J, Renold A, Kim J, Georgopoulos K (June 1999). "Repression by Ikaros and Aiolos is mediated through histone deacetylase complexes". The EMBO Journal. 18 (11): 3090–100. doi:10.1093/emboj/18.11.3090. PMC 1171390. PMID 10357820.


  • Zhang Y, Ng HH, Erdjument-Bromage H, Tempst P, Bird A, Reinberg D (August 1999). "Analysis of the NuRD subunits reveals a histone deacetylase core complex and a connection with DNA methylation". Genes & Development. 13 (15): 1924–35. doi:10.1101/gad.13.15.1924. PMC 316920. PMID 10444591.


  • Ng HH, Zhang Y, Hendrich B, Johnson CA, Turner BM, Erdjument-Bromage H, Tempst P, Reinberg D, Bird A (September 1999). "MBD2 is a transcriptional repressor belonging to the MeCP1 histone deacetylase complex". Nature Genetics. 23 (1): 58–61. doi:10.1038/12659. PMID 10471499.


  • Wade PA, Gegonne A, Jones PL, Ballestar E, Aubry F, Wolffe AP (September 1999). "Mi-2 complex couples DNA methylation to chromatin remodelling and histone deacetylation". Nature Genetics. 23 (1): 62–6. doi:10.1038/12664. PMID 10471500.


  • Lai A, Lee JM, Yang WM, DeCaprio JA, Kaelin WG, Seto E, Branton PE (October 1999). "RBP1 recruits both histone deacetylase-dependent and -independent repression activities to retinoblastoma family proteins". Molecular and Cellular Biology. 19 (10): 6632–41. doi:10.1128/mcb.19.10.6632. PMC 84642. PMID 10490602.



External links



  • HDAC2+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH)


  • FactorBook HDAC2










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