In today's world, HMGB2 has become a topic of great relevance and interest to a wide range of people. From experts in the field to those seeking information on the topic, HMGB2 has captured the attention of many people around the world. With its many facets and its impact on different aspects of everyday life, HMGB2 has become a focal point for debate and reflection. In this article, we will closely explore HMGB2 and its implications, offering detailed analysis and diverse perspectives on this fascinating topic.
High-mobility group protein B2 also known as high-mobility group protein 2 (HMG-2) is a protein that in humans is encoded by the HMGB2gene.[5][6]
Function
This gene encodes a member of the non-histone chromosomal high-mobility group protein family.[7] The proteins of this family are chromatin-associated and ubiquitously distributed in the nucleus of higher eukaryotic cells. In vitro studies have demonstrated that this protein is able to efficiently bend DNA and form DNA circles. These studies suggest a role in facilitating cooperative interactions between cis-acting proteins by promoting DNA flexibility. This protein was also reported to be involved in the final ligation step in DNA end-joining processes of DNA double-strand breaks repair and V(D)J recombination.[6]
Bernués J, Espel E, Querol E (May 1986). "Identification of the core-histone-binding domains of HMG1 and HMG2". Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 866 (4): 242–51. doi:10.1016/0167-4781(86)90049-7. PMID3697355.
Wanschura S, Schoenmakers EF, Huysmans C, Bartnitzke S, Van de Ven WJ, Bullrdiek J (Jan 1996). "Mapping of the human HMG2 gene to 4q31". Genomics. 31 (2): 264–5. doi:10.1006/geno.1996.0046. PMID8824816.
Nagaki S, Yamamoto M, Yumoto Y, Shirakawa H, Yoshida M, Teraoka H (May 1998). "Non-histone chromosomal proteins HMG1 and 2 enhance ligation reaction of DNA double-strand breaks". Biochemical and Biophysical Research Communications. 246 (1): 137–41. Bibcode:1998BBRC..246..137N. doi:10.1006/bbrc.1998.8589. PMID9600082.
Butteroni C, De Felici M, Schöler HR, Pesce M (Dec 2000). "Phage display screening reveals an association between germline-specific transcription factor Oct-4 and multiple cellular proteins". Journal of Molecular Biology. 304 (4): 529–40. doi:10.1006/jmbi.2000.4238. PMID11099378.
Fan Z, Beresford PJ, Zhang D, Xu Z, Novina CD, Yoshida A, Pommier Y, Lieberman J (Feb 2003). "Cleaving the oxidative repair protein Ape1 enhances cell death mediated by granzyme A". Nature Immunology. 4 (2): 145–53. doi:10.1038/ni885. PMID12524539. S2CID29433133.
Lv X, Xu DD, Liu DP, Li L, Hao DL, Liang CC (2003). "High-mobility group protein 2 may be involved in the locus control region regulation of the beta-globin gene cluster". Biochemistry and Cell Biology. 80 (6): 765–70. doi:10.1139/o02-164. PMID12555809.
Aird KM, Iwasaki O, Kossenkov AV, Tanizawa H, Fatkhutdinov N, Bitler BG, Le L, Alicea G, Yang TL, Johnson FB, Noma K, Zhang R (Oct 2016). "HMGB2 orchestrates the chromatin landscape of senescence-associated secretory phenotype gene loci"(PDF). The Journal of Cell Biology. 215 (3): 325–334. doi:10.1083/jcb.201608026. PMC5100296. PMID27799366. Loss of HMGB2 (High-mobility group protein box 2) during senescence blunts SASP (senescence-associated secretory phenotype) gene expression by allowing for spreading of repressive heterochromatin into SASP gene loci. This correlates with incorporation of SASP gene loci into SAHF (senescence-associated heterochromatin foci), which in turn represses SASP gene expression