ELOB

ELOB
Available structures PDB Human UniProt search: PDBe RCSB List of PDB id codes 1LM8, 1LQB, 1VCB, 2C9W, 2IZV, 2JZ3, 2MA9, 3DCG, 3ZKJ, 3ZNG, 3ZRC, 3ZRF, 3ZTC, 3ZTD, 3ZUN, 4AJY, 4AWJ, 4B95, 4B9K, 4BKS, 4BKT, 4N9F, 4W9C, 4W9D, 4W9E, 4W9F, 4W9G, 4W9H, 4W9I, 4W9J, 4W9K, 4W9L, 4WQO, 5BO4
Identifiers
Aliases	ELOB , SIII, TCEB2, transcription elongation factor B subunit 2, elongin B
External IDs	OMIM: 600787; HomoloGene: 134544; GeneCards: ELOB; OMA:ELOB - orthologs
Gene location (Human) Chr. Chromosome 16 (human) [1] Band 16p13.3 Start 2,771,414 bp [1] End 2,777,289 bp [1]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in left testis right testis apex of heart muscle of thigh stromal cell of endometrium anterior pituitary nucleus accumbens olfactory zone of nasal mucosa prefrontal cortex ganglionic eminence n/a More reference expression data BioGPS n/a
Gene ontology Molecular function protein binding ubiquitin protein ligase binding Cellular component Cul2-RING ubiquitin ligase complex cytosol Cul5-RING ubiquitin ligase complex VCB complex nucleus elongin complex nucleoplasm Biological process transcription elongation from RNA polymerase II promoter regulation of transcription, DNA-templated transcription by RNA polymerase II transcription, DNA-templated regulation of transcription from RNA polymerase II promoter in response to hypoxia protein ubiquitination post-translational protein modification protein-containing complex assembly Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 6923 n/a Ensembl ENSG00000103363 n/a UniProt Q15370 n/a RefSeq (mRNA) NM_207013 NM_007108 n/a RefSeq (protein) NP_009039 NP_996896 n/a Location (UCSC) Chr 16: 2.77 – 2.78 Mb n/a PubMed search [2] n/a
Wikidata
View/Edit Human

Elongin B is a protein that in humans is encoded by the ELOB gene. ^[3]

Function

Elongin B is a subunit of the transcription factor B (SIII) complex. The SIII complex is composed of elongins A/A2, B and C. It activates elongation by RNA polymerase II by suppressing transient pausing of the polymerase at many sites within transcription units. Elongin A functions as the transcriptionally active component of the SIII complex, whereas elongins B and C are regulatory subunits. Elongin A2 is specifically expressed in the testis, and capable of forming a stable complex with elongins B and C. The von Hippel-Lindau tumor suppressor protein binds to elongins B and C, and thereby inhibits transcription elongation. Two alternatively spliced transcript variants encoding different isoforms have been described for this gene. ^[4]

Interactions

TCEB2 has been shown to interact with:

• CUL2, ^{[5] [6]}
• TCEB1, ^{[7] [8] [9] [10]} and
• Von Hippel-Lindau tumor suppressor. ^{[5] [8] [11] [12] [13]}

References

1. GRCh38: Ensembl release 89: ENSG00000103363 – Ensembl, May 2017
2. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
3. Garrett KP, Aso T, Bradsher JN, Foundling SI, Lane WS, Conaway RC, Conaway JW (September 1995). "Positive regulation of general transcription factor SIII by a tailed ubiquitin homolog". Proc Natl Acad Sci U S A. 92 (16): 7172–6. Bibcode:1995PNAS...92.7172G. doi: 10.1073/pnas.92.16.7172 . PMC   41301 . PMID   7638163.
4. "ELOB elongin B [ Homo sapiens (human) ]".
5. Menon S, Tsuge T, Dohmae N, Takio K, Wei N (2008). "Association of SAP130/SF3b-3 with Cullin-RING ubiquitin ligase complexes and its regulation by the COP9 signalosome". BMC Biochem. 9: 1. doi: 10.1186/1471-2091-9-1 . PMC   2265268 . PMID   18173839.
6. Kamura T, Burian D, Yan Q, Schmidt SL, Lane WS, Querido E, Branton PE, Shilatifard A, Conaway RC, Conaway JW (August 2001). "Muf1, a novel Elongin BC-interacting leucine-rich repeat protein that can assemble with Cul5 and Rbx1 to reconstitute a ubiquitin ligase". J. Biol. Chem. 276 (32): 29748–53. doi: 10.1074/jbc.M103093200 . PMID   11384984.
7. Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot A, Li N, Berriz GF, Gibbons FD, Dreze M, Ayivi-Guedehoussou N, Klitgord N, Simon C, Boxem M, Milstein S, Rosenberg J, Goldberg DS, Zhang LV, Wong SL, Franklin G, Li S, Albala JS, Lim J, Fraughton C, Llamosas E, Cevik S, Bex C, Lamesch P, Sikorski RS, Vandenhaute J, Zoghbi HY, Smolyar A, Bosak S, Sequerra R, Doucette-Stamm L, Cusick ME, Hill DE, Roth FP, Vidal M (October 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID   16189514. S2CID   4427026.
8. Ohh M, Takagi Y, Aso T, Stebbins CE, Pavletich NP, Zbar B, Conaway RC, Conaway JW, Kaelin WG (Dec 1999). "Synthetic peptides define critical contacts between elongin C, elongin B, and the von Hippel-Lindau protein". J. Clin. Invest. 104 (11): 1583–91. doi:10.1172/JCI8161. PMC   481054 . PMID   10587522.
9. Krumm A, Groudine M (September 1995). "Tumor suppression and transcription elongation: the dire consequences of changing partners". Science. 269 (5229): 1400–1. Bibcode:1995Sci...269.1400K. doi:10.1126/science.7660121. PMID   7660121. S2CID   39758696.
10. Li Z, Na X, Wang D, Schoen SR, Messing EM, Wu G (February 2002). "Ubiquitination of a novel deubiquitinating enzyme requires direct binding to von Hippel-Lindau tumor suppressor protein". J. Biol. Chem. 277 (7): 4656–62. doi: 10.1074/jbc.M108269200 . PMID   11739384.
11. Ewing RM, Chu P, Elisma F, Li H, Taylor P, Climie S, McBroom-Cerajewski L, Robinson MD, O'Connor L, Li M, Taylor R, Dharsee M, Ho Y, Heilbut A, Moore L, Zhang S, Ornatsky O, Bukhman YV, Ethier M, Sheng Y, Vasilescu J, Abu-Farha M, Lambert JP, Duewel HS, Stewart II, Kuehl B, Hogue K, Colwill K, Gladwish K, Muskat B, Kinach R, Adams SL, Moran MF, Morin GB, Topaloglou T, Figeys D (2007). "Large-scale mapping of human protein-protein interactions by mass spectrometry". Mol. Syst. Biol. 3: 89. doi:10.1038/msb4100134. PMC   1847948 . PMID   17353931.
12. Min JH, Yang H, Ivan M, Gertler F, Kaelin WG, Pavletich NP (June 2002). "Structure of an HIF-1alpha -pVHL complex: hydroxyproline recognition in signaling". Science. 296 (5574): 1886–9. Bibcode:2002Sci...296.1886M. doi: 10.1126/science.1073440 . PMID   12004076. S2CID   19641938.
13. Hacker KE, Lee CM, Rathmell WK (2008). Zhang B (ed.). "VHL type 2B mutations retain VBC complex form and function". PLOS ONE. 3 (11): e3801. Bibcode:2008PLoSO...3.3801H. doi: 10.1371/journal.pone.0003801 . PMC   2583047 . PMID   19030229.

Further reading

• Duan DR, Pause A, Burgess WH, Aso T, Chen DY, Garrett KP, Conaway RC, Conaway JW, Linehan WM, Klausner RD (1995). "Inhibition of transcription elongation by the VHL tumor suppressor protein". Science. 269 (5229): 1402–6. Bibcode:1995Sci...269.1402D. doi:10.1126/science.7660122. PMID   7660122. S2CID   22334719.
• Aso T, Lane WS, Conaway JW, Conaway RC (1995). "Elongin (SIII): a multisubunit regulator of elongation by RNA polymerase II". Science. 269 (5229): 1439–43. Bibcode:1995Sci...269.1439A. doi:10.1126/science.7660129. PMID   7660129. S2CID   37649908.
• Kibel A, Iliopoulos O, DeCaprio JA, Kaelin WG (1995). "Binding of the von Hippel-Lindau tumor suppressor protein to Elongin B and C". Science. 269 (5229): 1444–6. Bibcode:1995Sci...269.1444K. doi:10.1126/science.7660130. PMID   7660130. S2CID   25410108.
• Bradsher JN, Jackson KW, Conaway RC, Conaway JW (1994). "RNA polymerase II transcription factor SIII. I. Identification, purification, and properties". J. Biol. Chem. 268 (34): 25587–93. doi: 10.1016/S0021-9258(19)74431-7 . PMID   8244996.
• Pause A, Lee S, Worrell RA, Chen DY, Burgess WH, Linehan WM, Klausner RD (1997). "The von Hippel-Lindau tumor-suppressor gene product forms a stable complex with human CUL-2, a member of the Cdc53 family of proteins". Proc. Natl. Acad. Sci. U.S.A. 94 (6): 2156–61. Bibcode:1997PNAS...94.2156P. doi: 10.1073/pnas.94.6.2156 . PMC   20057 . PMID   9122164.
• Li XY, Green MR (1998). "The HIV-1 Tat cellular coactivator Tat-SF1 is a general transcription elongation factor". Genes Dev. 12 (19): 2992–6. doi:10.1101/gad.12.19.2992. PMC   317190 . PMID   9765201.
• Zhang JG, Farley A, Nicholson SE, Willson TA, Zugaro LM, Simpson RJ, Moritz RL, Cary D, Richardson R, Hausmann G, Kile BJ, Kent SB, Alexander WS, Metcalf D, Hilton DJ, Nicola NA, Baca M (1999). "The conserved SOCS box motif in suppressors of cytokine signaling binds to elongins B and C and may couple bound proteins to proteasomal degradation". Proc. Natl. Acad. Sci. U.S.A. 96 (5): 2071–6. Bibcode:1999PNAS...96.2071Z. doi: 10.1073/pnas.96.5.2071 . PMC   26738 . PMID   10051596.
• Stebbins CE, Kaelin WG, Pavletich NP (1999). "Structure of the VHL-ElonginC-ElonginB complex: implications for VHL tumor suppressor function". Science. 284 (5413): 455–61. Bibcode:1999Sci...284..455S. doi:10.1126/science.284.5413.455. PMID   10205047.
• Pause A, Peterson B, Schaffar G, Stearman R, Klausner RD (1999). "Studying interactions of four proteins in the yeast two-hybrid system: structural resemblance of the pVHL/elongin BC/hCUL-2 complex with the ubiquitin ligase complex SKP1/cullin/F-box protein". Proc. Natl. Acad. Sci. U.S.A. 96 (17): 9533–8. Bibcode:1999PNAS...96.9533P. doi: 10.1073/pnas.96.17.9533 . PMC   22243 . PMID   10449727.
• Iwai K, Yamanaka K, Kamura T, Minato N, Conaway RC, Conaway JW, Klausner RD, Pause A (1999). "Identification of the von Hippel-lindau tumor-suppressor protein as part of an active E3 ubiquitin ligase complex". Proc. Natl. Acad. Sci. U.S.A. 96 (22): 12436–41. Bibcode:1999PNAS...9612436I. doi: 10.1073/pnas.96.22.12436 . PMC   22941 . PMID   10535940.
• Ohh M, Takagi Y, Aso T, Stebbins CE, Pavletich NP, Zbar B, Conaway RC, Conaway JW, Kaelin WG (2000). "Synthetic peptides define critical contacts between elongin C, elongin B, and the von Hippel-Lindau protein". J. Clin. Invest. 104 (11): 1583–91. doi:10.1172/JCI8161. PMC   481054 . PMID   10587522.
• Aso T, Yamazaki K, Amimoto K, Kuroiwa A, Higashi H, Matsuda Y, Kitajima S, Hatakeyama M (2000). "Identification and characterization of Elongin A2, a new member of the Elongin family of transcription elongation factors, specifically expressed in the testis". J. Biol. Chem. 275 (9): 6546–52. doi: 10.1074/jbc.275.9.6546 . PMID   10692460.
• Kamura T, Sato S, Iwai K, Czyzyk-Krzeska M, Conaway RC, Conaway JW (2000). "Activation of HIF1alpha ubiquitination by a reconstituted von Hippel-Lindau (VHL) tumor suppressor complex". Proc. Natl. Acad. Sci. U.S.A. 97 (19): 10430–5. Bibcode:2000PNAS...9710430K. doi: 10.1073/pnas.190332597 . PMC   27041 . PMID   10973499.
• Aso T, Yamazaki K, Aigaki T, Kitajima S (2000). "Drosophila von Hippel-Lindau tumor suppressor complex possesses E3 ubiquitin ligase activity". Biochem. Biophys. Res. Commun. 276 (1): 355–61. doi:10.1006/bbrc.2000.3451. PMID   11006129.
• Kamura T, Burian D, Yan Q, Schmidt SL, Lane WS, Querido E, Branton PE, Shilatifard A, Conaway RC, Conaway JW (2001). "Muf1, a novel Elongin BC-interacting leucine-rich repeat protein that can assemble with Cul5 and Rbx1 to reconstitute a ubiquitin ligase". J. Biol. Chem. 276 (32): 29748–53. doi: 10.1074/jbc.M103093200 . PMID   11384984.
• Li Z, Na X, Wang D, Schoen SR, Messing EM, Wu G (2002). "Ubiquitination of a novel deubiquitinating enzyme requires direct binding to von Hippel-Lindau tumor suppressor protein". J. Biol. Chem. 277 (7): 4656–62. doi: 10.1074/jbc.M108269200 . PMID   11739384.
• Yamazaki K, Guo L, Sugahara K, Zhang C, Enzan H, Nakabeppu Y, Kitajima S, Aso T (2002). "Identification and biochemical characterization of a novel transcription elongation factor, Elongin A3". J. Biol. Chem. 277 (29): 26444–51. doi: 10.1074/jbc.M202859200 . PMID   11994304.
• Min JH, Yang H, Ivan M, Gertler F, Kaelin WG, Pavletich NP (2002). "Structure of an HIF-1alpha -pVHL complex: hydroxyproline recognition in signaling". Science. 296 (5574): 1886–9. Bibcode:2002Sci...296.1886M. doi: 10.1126/science.1073440 . PMID   12004076. S2CID   19641938.
• Hon WC, Wilson MI, Harlos K, Claridge TD, Schofield CJ, Pugh CW, Maxwell PH, Ratcliffe PJ, Stuart DI, Jones EY (2002). "Structural basis for the recognition of hydroxyproline in HIF-1 alpha by pVHL". Nature. 417 (6892): 975–8. Bibcode:2002Natur.417..975H. doi:10.1038/nature00767. PMID   12050673. S2CID   4388644.

External links

• PDBe-KB provides an overview of all the structure information available in the PDB for Human Elongin-B