H2AFY

H2A histone family, member Y
PDB rendering based on 1u35.
Available structures PDB Ortholog search: PDBe, RCSB List of PDB id codes 1U35​, 1ZR3​, 1ZR5​, 2F8N​, 2FXK​, 3HQH​, 3HSV​, 3IID​, 3IIF​, 3IVB​
Identifiers
Symbols	H2AFY ; H2A.y; H2A/y; H2AF12M; H2AFJ; MACROH2A1.1; mH2A1; macroH2A1.2
External IDs	OMIM: 610054 MGI: 1349392 HomoloGene: 3598 GeneCards: H2AFY Gene
Gene ontology Molecular function • rDNA binding • RNA polymerase II regulatory region sequence-specific DNA binding • RNA polymerase II core promoter sequence-specific DNA binding • core promoter sequence-specific DNA binding • DNA binding • protein binding • double-stranded methylated DNA binding • protein kinase binding • protein serine/threonine kinase inhibitor activity • chromatin DNA binding • nucleosomal DNA binding • transcription regulatory region DNA binding • protein heterodimerization activity Cellular component • nuclear chromosome • nucleosome • nuclear chromatin • condensed chromosome • sex chromatin • Barr body • nucleus • nucleoplasm • pericentric heterochromatin • nucleolus • ESC/E(Z) complex • extracellular exosome Biological process • negative regulation of transcription from RNA polymerase II promoter • regulation of cell growth • nucleosome assembly • dosage compensation • chromatin modification • regulation of lipid metabolic process • negative regulation of histone phosphorylation • regulation of gene expression, epigenetic • positive regulation of keratinocyte differentiation • negative regulation of gene expression, epigenetic • positive regulation of gene expression, epigenetic • negative regulation of histone H3-K4 methylation • negative regulation of histone H3-K27 methylation • regulation of chromatin silencing at rDNA • establishment of protein localization to chromatin • negative regulation of protein serine/threonine kinase activity • negative regulation of transcription of nuclear large rRNA transcript from RNA polymerase I promoter • negative regulation of cell cycle G2/M phase transition Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	9555	26914
Ensembl	ENSG00000113648	ENSMUSG00000015937
UniProt	O75367	Q9QZQ8
RefSeq (mRNA)	NM_001040158	NM_001159513
RefSeq (protein)	NP_001035248	NP_001152985
Location (UCSC)	Chr 5: 135.33 – 135.4 Mb	Chr 13: 56.07 – 56.14 Mb
PubMed search

Core histone macro-H2A.1 is a protein that in humans is encoded by the H2AFY gene.^[1][2][3]

Function

Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes. Nucleosomes consist of approximately 146 bp of DNA wrapped around a histone octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). The chromatin fiber is further compacted through the interaction of a linker histone, H1, with the DNA between the nucleosomes to form higher order chromatin structures. This gene encodes a member of the histone H2A family. It replaces conventional H2A histones in a subset of nucleosomes where it represses transcription and participates in stable X chromosome inactivation. Alternative splicing results in multiple transcript variants encoding different isoforms.^[3] Expression of these isoforms is associated to several cancers, such as hepatocellular carcinoma.^[4]

References

1. Mao M, Fu G, Wu JS, Zhang QH, Zhou J, Kan LX, Huang QH, He KL, Gu BW, Han ZG, Shen Y, Gu J, Yu YP, Xu SH, Wang YX, Chen SJ, Chen Z (Jul 1998). "Identification of genes expressed in human CD34(+) hematopoietic stem/progenitor cells by expressed sequence tags and efficient full-length cDNA cloning". Proceedings of the National Academy of Sciences of the United States of America 95 (14): 8175–80. doi:10.1073/pnas.95.14.8175. PMC 20949. PMID 9653160.
2. Lee Y, Hong M, Kim JW, Hong YM, Choe YK, Chang SY, Lee KS, Choe IS (Jul 1998). "Isolation of cDNA clones encoding human histone macroH2A1 subtypes". Biochimica et Biophysica Acta 1399 (1): 73–7. doi:10.1016/s0167-4781(98)00098-0. PMID 9714746.
3. "Entrez Gene: H2AFY H2A histone family, member Y".
4. Rappa F, Greco A, Podrini C, Cappello F, Foti M, Bourgoin L, Peyrou M, Marino A, Scibetta N, Williams R, Mazzoccoli G, Federici M, Pazienza V, Vinciguerra M (2013). "Immunopositivity for histone macroH2A1 isoforms marks steatosis-associated hepatocellular carcinoma". PLOS ONE 8 (1): e54458. doi:10.1371/journal.pone.0054458. PMC 3553099. PMID 23372727.

Further reading

• El Kharroubi A, Piras G, Zensen R, Martin MA (May 1998). "Transcriptional activation of the integrated chromatin-associated human immunodeficiency virus type 1 promoter". Molecular and Cellular Biology 18 (5): 2535–44. doi:10.1128/mcb.18.5.2535. PMC 110633. PMID 9566873.
• Costanzi C, Pehrson JR (Jun 1998). "Histone macroH2A1 is concentrated in the inactive X chromosome of female mammals". Nature 393 (6685): 599–601. doi:10.1038/31275. PMID 9634239.
• Zhang QH, Ye M, Wu XY, Ren SX, Zhao M, Zhao CJ, Fu G, Shen Y, Fan HY, Lu G, Zhong M, Xu XR, Han ZG, Zhang JW, Tao J, Huang QH, Zhou J, Hu GX, Gu J, Chen SJ, Chen Z (Oct 2000). "Cloning and functional analysis of cDNAs with open reading frames for 300 previously undefined genes expressed in CD34+ hematopoietic stem/progenitor cells". Genome Research 10 (10): 1546–60. doi:10.1101/gr.140200. PMC 310934. PMID 11042152.
• Deng L, de la Fuente C, Fu P, Wang L, Donnelly R, Wade JD, Lambert P, Li H, Lee CG, Kashanchi F (Nov 2000). "Acetylation of HIV-1 Tat by CBP/P300 increases transcription of integrated HIV-1 genome and enhances binding to core histones". Virology 277 (2): 278–95. doi:10.1006/viro.2000.0593. PMID 11080476.
• Chadwick BP, Willard HF (May 2001). "Histone H2A variants and the inactive X chromosome: identification of a second macroH2A variant". Human Molecular Genetics 10 (10): 1101–13. doi:10.1093/hmg/10.10.1101. PMID 11331621.
• Deng L, Wang D, de la Fuente C, Wang L, Li H, Lee CG, Donnelly R, Wade JD, Lambert P, Kashanchi F (Oct 2001). "Enhancement of the p300 HAT activity by HIV-1 Tat on chromatin DNA". Virology 289 (2): 312–26. doi:10.1006/viro.2001.1129. PMID 11689053.
• Chadwick BP, Willard HF (Jun 2002). "Cell cycle-dependent localization of macroH2A in chromatin of the inactive X chromosome". The Journal of Cell Biology 157 (7): 1113–23. doi:10.1083/jcb.200112074. PMC 2173542. PMID 12082075.
• Takahashi I, Kameoka Y, Hashimoto K (Aug 2002). "MacroH2A1.2 binds the nuclear protein Spop". Biochimica et Biophysica Acta 1591 (1-3): 63–8. doi:10.1016/S0167-4889(02)00249-5. PMID 12183056.
• Ganesan S, Silver DP, Greenberg RA, Avni D, Drapkin R, Miron A, Mok SC, Randrianarison V, Brodie S, Salstrom J, Rasmussen TP, Klimke A, Marrese C, Marahrens Y, Deng CX, Feunteun J, Livingston DM (Nov 2002). "BRCA1 supports XIST RNA concentration on the inactive X chromosome". Cell 111 (3): 393–405. doi:10.1016/S0092-8674(02)01052-8. PMID 12419249.
• Angelov D, Molla A, Perche PY, Hans F, Côté J, Khochbin S, Bouvet P, Dimitrov S (Apr 2003). "The histone variant macroH2A interferes with transcription factor binding and SWI/SNF nucleosome remodeling". Molecular Cell 11 (4): 1033–41. doi:10.1016/S1097-2765(03)00100-X. PMID 12718888.
• Behrends U, Schneider I, Rössler S, Frauenknecht H, Golbeck A, Lechner B, Eigenstetter G, Zobywalski C, Müller-Weihrich S, Graubner U, Schmid I, Sackerer D, Späth M, Goetz C, Prantl F, Asmuss HP, Bise K, Mautner J (Aug 2003). "Novel tumor antigens identified by autologous antibody screening of childhood medulloblastoma cDNA libraries". International Journal of Cancer. Journal International Du Cancer 106 (2): 244–51. doi:10.1002/ijc.11208. PMID 12800201.
• Lusic M, Marcello A, Cereseto A, Giacca M (Dec 2003). "Regulation of HIV-1 gene expression by histone acetylation and factor recruitment at the LTR promoter". The EMBO Journal 22 (24): 6550–61. doi:10.1093/emboj/cdg631. PMC 291826. PMID 14657027.
• Acín-Pérez R, Bayona-Bafaluy MP, Fernández-Silva P, Moreno-Loshuertos R, Pérez-Martos A, Bruno C, Moraes CT, Enríquez JA (Mar 2004). "Respiratory complex III is required to maintain complex I in mammalian mitochondria". Molecular Cell 13 (6): 805–15. doi:10.1016/S1097-2765(04)00124-8. PMC 3164363. PMID 15053874.
• Zhang R, Poustovoitov MV, Ye X, Santos HA, Chen W, Daganzo SM, Erzberger JP, Serebriiskii IG, Canutescu AA, Dunbrack RL, Pehrson JR, Berger JM, Kaufman PD, Adams PD (Jan 2005). "Formation of MacroH2A-containing senescence-associated heterochromatin foci and senescence driven by ASF1a and HIRA". Developmental Cell 8 (1): 19–30. doi:10.1016/j.devcel.2004.10.019. PMID 15621527.
• Hernández-Muñoz I, Lund AH, van der Stoop P, Boutsma E, Muijrers I, Verhoeven E, Nusinow DA, Panning B, Marahrens Y, van Lohuizen M (May 2005). "Stable X chromosome inactivation involves the PRC1 Polycomb complex and requires histone MACROH2A1 and the CULLIN3/SPOP ubiquitin E3 ligase". Proceedings of the National Academy of Sciences of the United States of America 102 (21): 7635–40. doi:10.1073/pnas.0408918102. PMC 1140410. PMID 15897469.
• Ioudinkova ES, Barat A, Pichugin A, Markova E, Sklyar I, Pirozhkova I, Robin C, Lipinski M, Ogryzko V, Vassetzky YS, Razin SV (2012). "Distinct distribution of ectopically expressed histone variants H2A.Bbd and MacroH2A in open and closed chromatin domains". PLOS ONE 7 (10): e47157. doi:10.1371/journal.pone.0047157. PMC 3484066. PMID 23118866.