succinate dehydrogenase complex assembly factor 2
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L SDHAF2 gene provides instructions for making a protein that interacts with the succinate dehydrogenase (SDH) enzyme. The SDHAF2 protein helps a molecule called FAD attach to the SDH enzyme. FAD is called a cofactor because it helps the enzyme carry out its function. The FAD cofactor is required for SDH enzyme activity.
Normal function
L SDHAF2 gene provides instructions for making a protein that interacts with the succinate dehydrogenase (SDH) enzyme. The SDHAF2 protein helps a molecule called FAD attach to the SDH enzyme. FAD is called a cofactor because it helps the enzyme carry out its function. The FAD cofactor is required for SDH enzyme activity.
The SDH enzyme plays a critical role in mitochondria, which are structures inside cells that convert the energy from food into a form that cells can use. Within mitochondria, the SDH enzyme links two important pathways in energy conversion: the citric acid cycle (or Krebs cycle) and oxidative phosphorylation. As part of the citric acid cycle, the SDH enzyme converts a compound called succinate to another compound called fumarate.
Succinate, the compound on which the SDH enzyme acts, is an oxygen sensor in the cell and can help turn on specific pathways that stimulate cells to grow in a low-oxygen environment (hypoxia). In particular, succinate stabilizes a protein called hypoxia-inducible factor (HIF) by preventing a reaction that would allow HIF to be broken down. HIF controls several important genes involved in cell division and the formation of new blood vessels in a hypoxic environment.
L SDHAF2 gene is a tumour suppressor, which means it prevents cells from growing and dividing in an uncontrolled way.
Conditions referring to this gene or chromosome
Altri nomi
C11orf79
FLJ20487
hSDH5
PGL2
SDH assembly factor 2
SDH5
SDHF2_HUMAN
succinate dehydrogenase assembly factor 2, mitochondrial
succinate dehydrogenase subunit 5, mitochondrial
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Ulteriori letture e riferimenti
- succinate dehydrogenase complex assembly factor 2; MedlinePlus, National Library of Medicine.
- Bayley JP, Kunst HP, Cascon A, Sampietro ML, Gaal J, Korpershoek E, Hinojar-Gutierrez A, Timmers HJ, Hoefsloot LH, Hermsen MA, Suarez C, Hussain AK, Vriends AH, Hes FJ, Jansen JC, Tops CM, Corssmit EP, de Knijff P, Lenders JW, Cremers CW, Devilee P, Dinjens WN, de Krijger RR, Robledo M. SDHAF2 mutations in familial and sporadic paraganglioma and phaeochromocytoma. Lancet Oncol. 2010 Apr;11(4):366-72. doi: 10.1016/S1470-2045(10)70007-3. Epub 2010 Jan 11.
- Hao HX, Khalimonchuk O, Schraders M, Dephoure N, Bayley JP, Kunst H, Devilee P, Cremers CW, Schiffman JD, Bentz BG, Gygi SP, Winge DR, Kremer H, Rutter J. SDH5, a gene required for flavination of succinate dehydrogenase, is mutated in paraganglioma. Science. 2009 Aug 28;325(5944):1139-42. doi: 10.1126/science.1175689. Epub 2009 Jul 23.
- Muller U. Pathological mechanisms and parent-of-origin effects in hereditary paraganglioma/pheochromocytoma (PGL/PCC). Neurogenetics. 2011 Aug;12(3):175-81. doi: 10.1007/s10048-011-0280-y. Epub 2011 Mar 9.
- Pasini B, Stratakis CA. SDH mutations in tumorigenesis and inherited endocrine tumours: lesson from the phaeochromocytoma-paraganglioma syndromes. J Intern Med. 2009 Jul;266(1):19-42. doi: 10.1111/j.1365-2796.2009.02111.x.
- Pollard PJ, Briere JJ, Alam NA, Barwell J, Barclay E, Wortham NC, Hunt T, Mitchell M, Olpin S, Moat SJ, Hargreaves IP, Heales SJ, Chung YL, Griffiths JR, Dalgleish A, McGrath JA, Gleeson MJ, Hodgson SV, Poulsom R, Rustin P, Tomlinson IP. Accumulation of Krebs cycle intermediates and over-expression of HIF1alpha in tumours which result from germline FH and SDH mutations. Hum Mol Genet. 2005 Aug 1;14(15):2231-9. doi: 10.1093/hmg/ddi227. Epub 2005 Jun 29.
- Selak MA, Armour SM, MacKenzie ED, Boulahbel H, Watson DG, Mansfield KD, Pan Y, Simon MC, Thompson CB, Gottlieb E. Succinate links TCA cycle dysfunction to oncogenesis by inhibiting HIF-alpha prolyl hydroxylase. Cancer Cell. 2005 Jan;7(1):77-85. doi: 10.1016/j.ccr.2004.11.022.
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