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{{PBB|geneid=4537}}
{{PBB|geneid=4537}}
'''Mitochondrially encoded NADH dehydrogenase 3''' is a [[protein]] that in humans is encoded by the [[mitochondria]]l [[gene]] '''MT-ND3'''.<ref name = EntrezMTND3>{{cite web | title = Entrez Gene: MT-ND3 NADH dehydrogenase subunit 3| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=4537| accessdate = }}</ref> The ND3 protein is a subunit of [[NADH dehydrogenase (ubiquinone)]], which is located in the [[mitochondrial inner membrane]] and is the largest of the five complexes of the [[electron transport chain]].<ref name = Biochem>{{cite book|last1=Pratt|first1=Donald Voet, Judith G. Voet, Charlotte W.|title=Fundamentals of biochemistry : life at the molecular level|date=2013|publisher=Wiley|location=Hoboken, NJ|isbn=9780470547847|chapter = 18 | pages=581–620|edition=4th}}</ref> Variants of MT-ND3 are associated with [[Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes]] (MELAS), [[Leigh's syndrome]] (LS) and [[Leber's hereditary optic neuropathy]] (LHON).<ref name=GeneReviews>{{cite book | title = GeneReviews [Internet] | editor = Pagon RA, Adam MP, Ardinger HH, Wallace SE, Amemiya A, Bean LJ, Bird TD, Dolan CR, Fong CT, Smith RJ Stephens K | author = Thorburn DR, Rahman S | chapter = Mitochondrial DNA-Associated Leigh Syndrome and NARP | chapterurl = http://www.ncbi.nlm.nih.gov/books/NBK1173 | publisher = University of Washington, Seattle | location = Seattle (WA) | date = 1993–2015 }}</ref><ref name=MTND1mutation>{{cite journal | vauthors = La Morgia C, Caporali L, Gandini F, Olivieri A, Toni F, Nassetti S, Brunetto D, Stipa C, Scaduto C, Parmeggiani A, Tonon C, Lodi R, Torroni A, Carelli V | title = Association of the mtDNA m.4171C→A/MT-ND1 mutation with both optic neuropathy and bilateral brainstem lesions | journal = BMC Neurology | volume = 14 | pmid = 24884847 | doi = 10.1186/1471-2377-14-116 }}</ref>
'''Mitochondrially encoded NADH dehydrogenase 3''' is a [[protein]] that in humans is encoded by the [[mitochondria]]l [[gene]] '''MT-ND3'''.<ref name = EntrezMTND3>{{cite web | title = Entrez Gene: MT-ND3 NADH dehydrogenase subunit 3| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=4537| accessdate = }}</ref> The ND3 protein is a subunit of [[NADH dehydrogenase (ubiquinone)]], which is located in the [[mitochondrial inner membrane]] and is the largest of the five complexes of the [[electron transport chain]].<ref name = Biochem>{{cite book|last1=Pratt|first1=Donald Voet, Judith G. Voet, Charlotte W.|title=Fundamentals of biochemistry : life at the molecular level|date=2013|publisher=Wiley|location=Hoboken, NJ|isbn=9780470547847|chapter = 18 | pages=581–620|edition=4th}}</ref> Variants of MT-ND3 are associated with [[Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes]] (MELAS), [[Leigh's syndrome]] (LS) and [[Leber's hereditary optic neuropathy]] (LHON).<ref name=GeneReviews>{{cite book | title = GeneReviews [Internet] | editor = Pagon RA, Adam MP, Ardinger HH, Wallace SE, Amemiya A, Bean LJ, Bird TD, Dolan CR, Fong CT, Smith RJ Stephens K | author = Thorburn DR, Rahman S | chapter = Mitochondrial DNA-Associated Leigh Syndrome and NARP | chapterurl = http://www.ncbi.nlm.nih.gov/books/NBK1173 | publisher = University of Washington, Seattle | location = Seattle (WA) | date = 1993–2015 }}</ref><ref name=MTND1mutation>{{cite journal | vauthors = La Morgia C, Caporali L, Gandini F, Olivieri A, Toni F, Nassetti S, Brunetto D, Stipa C, Scaduto C, Parmeggiani A, Tonon C, Lodi R, Torroni A, Carelli V | title = Association of the mtDNA m.4171C→A/MT-ND1 mutation with both optic neuropathy and bilateral brainstem lesions | journal = BMC Neurology | volume = 14 | pmid = 24884847 | doi = 10.1186/1471-2377-14-116 | pmc=4047257 | pages=116}}</ref>


== Structure ==
== Structure ==
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* {{cite journal | vauthors = Tanaka M, Cabrera VM, González AM, Larruga JM, Takeyasu T, Fuku N, Guo LJ, Hirose R, Fujita Y, Kurata M, Shinoda K, Umetsu K, Yamada Y, Oshida Y, Sato Y, Hattori N, Mizuno Y, Arai Y, Hirose N, Ohta S, Ogawa O, Tanaka Y, Kawamori R, Shamoto-Nagai M, Maruyama W, Shimokata H, Suzuki R, Shimodaira H | title = Mitochondrial genome variation in eastern Asia and the peopling of Japan | journal = Genome Research | volume = 14 | issue = 10A | pages = 1832–50 | date = Oct 2004 | pmid = 15466285 | pmc = 524407 | doi = 10.1101/gr.2286304 }}
* {{cite journal | vauthors = Tanaka M, Cabrera VM, González AM, Larruga JM, Takeyasu T, Fuku N, Guo LJ, Hirose R, Fujita Y, Kurata M, Shinoda K, Umetsu K, Yamada Y, Oshida Y, Sato Y, Hattori N, Mizuno Y, Arai Y, Hirose N, Ohta S, Ogawa O, Tanaka Y, Kawamori R, Shamoto-Nagai M, Maruyama W, Shimokata H, Suzuki R, Shimodaira H | title = Mitochondrial genome variation in eastern Asia and the peopling of Japan | journal = Genome Research | volume = 14 | issue = 10A | pages = 1832–50 | date = Oct 2004 | pmid = 15466285 | pmc = 524407 | doi = 10.1101/gr.2286304 }}
* {{cite journal | vauthors = Palanichamy MG, Sun C, Agrawal S, Bandelt HJ, Kong QP, Khan F, Wang CY, Chaudhuri TK, Palla V, Zhang YP | title = Phylogeny of mitochondrial DNA macrohaplogroup N in India, based on complete sequencing: implications for the peopling of South Asia | journal = American Journal of Human Genetics | volume = 75 | issue = 6 | pages = 966–78 | date = Dec 2004 | pmid = 15467980 | pmc = 1182158 | doi = 10.1086/425871 }}
* {{cite journal | vauthors = Palanichamy MG, Sun C, Agrawal S, Bandelt HJ, Kong QP, Khan F, Wang CY, Chaudhuri TK, Palla V, Zhang YP | title = Phylogeny of mitochondrial DNA macrohaplogroup N in India, based on complete sequencing: implications for the peopling of South Asia | journal = American Journal of Human Genetics | volume = 75 | issue = 6 | pages = 966–78 | date = Dec 2004 | pmid = 15467980 | pmc = 1182158 | doi = 10.1086/425871 }}
* {{cite journal | vauthors = Starikovskaya EB, Sukernik RI, Derbeneva OA, Volodko NV, Ruiz-Pesini E, Torroni A, Brown MD, Lott MT, Hosseini SH, Huoponen K, Wallace DC | title = Mitochondrial DNA diversity in indigenous populations of the southern extent of Siberia, and the origins of Native American haplogroups | journal = Annals of Human Genetics | volume = 69 | issue = Pt 1 | pages = 67–89 | date = Jan 2005 | pmid = 15638829 | doi = 10.1046/j.1529-8817.2003.00127.x }}
* {{cite journal | vauthors = Starikovskaya EB, Sukernik RI, Derbeneva OA, Volodko NV, Ruiz-Pesini E, Torroni A, Brown MD, Lott MT, Hosseini SH, Huoponen K, Wallace DC | title = Mitochondrial DNA diversity in indigenous populations of the southern extent of Siberia, and the origins of Native American haplogroups | journal = Annals of Human Genetics | volume = 69 | issue = Pt 1 | pages = 67–89 | date = Jan 2005 | pmid = 15638829 | doi = 10.1046/j.1529-8817.2003.00127.x | pmc=3905771}}
* {{cite journal | vauthors = Achilli A, Rengo C, Battaglia V, Pala M, Olivieri A, Fornarino S, Magri C, Scozzari R, Babudri N, Santachiara-Benerecetti AS, Bandelt HJ, Semino O, Torroni A | title = Saami and Berbers--an unexpected mitochondrial DNA link | journal = American Journal of Human Genetics | volume = 76 | issue = 5 | pages = 883–6 | date = May 2005 | pmid = 15791543 | pmc = 1199377 | doi = 10.1086/430073 }}
* {{cite journal | vauthors = Achilli A, Rengo C, Battaglia V, Pala M, Olivieri A, Fornarino S, Magri C, Scozzari R, Babudri N, Santachiara-Benerecetti AS, Bandelt HJ, Semino O, Torroni A | title = Saami and Berbers--an unexpected mitochondrial DNA link | journal = American Journal of Human Genetics | volume = 76 | issue = 5 | pages = 883–6 | date = May 2005 | pmid = 15791543 | pmc = 1199377 | doi = 10.1086/430073 }}
* {{cite journal | vauthors = Rajkumar R, Banerjee J, Gunturi HB, Trivedi R, Kashyap VK | title = Phylogeny and antiquity of M macrohaplogroup inferred from complete mt DNA sequence of Indian specific lineages | journal = BMC Evolutionary Biology | volume = 5 | pages = 26 | year = 2006 | pmid = 15804362 | pmc = 1079809 | doi = 10.1186/1471-2148-5-26 }}
* {{cite journal | vauthors = Rajkumar R, Banerjee J, Gunturi HB, Trivedi R, Kashyap VK | title = Phylogeny and antiquity of M macrohaplogroup inferred from complete mt DNA sequence of Indian specific lineages | journal = BMC Evolutionary Biology | volume = 5 | pages = 26 | year = 2006 | pmid = 15804362 | pmc = 1079809 | doi = 10.1186/1471-2148-5-26 }}

Revision as of 22:04, 6 January 2016

Template:PBB Mitochondrially encoded NADH dehydrogenase 3 is a protein that in humans is encoded by the mitochondrial gene MT-ND3.[1] The ND3 protein is a subunit of NADH dehydrogenase (ubiquinone), which is located in the mitochondrial inner membrane and is the largest of the five complexes of the electron transport chain.[2] Variants of MT-ND3 are associated with Mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS), Leigh's syndrome (LS) and Leber's hereditary optic neuropathy (LHON).[3][4]

Structure

MT-ND3 is located in mitochondrial DNA from base pair 10,059 to 10,404.[1] The MT-ND3 gene produces a 13 kDa protein composed of 115 amino acids.[5][6] MT-ND3 is one of seven mitochondrially-encoded subunits of the enzyme NADH dehydrogenase (ubiquinone). Also known as Complex I, it is the largest of the respiratory complexes. The structure is L-shaped with a long, hydrophobic transmembrane domain and a hydrophilic domain for the peripheral arm that includes all the known redox centres and the NADH binding site. MT-ND3 and the rest of the mitochondrially encoded subunits are the most hydrophobic of the subunits of Complex I and form the core of the transmembrane region.[2]

Function

MT-ND3 is a subunit of the respiratory chain Complex I that is believed to belong to the minimal assembly of core proteins required to catalyze NADH dehydrogenation and electron transfer to ubiquinone (coenzyme Q10).[7] Initially, NADH binds to Complex I and transfers two electrons to the isoalloxazine ring of the flavin mononucleotide (FMN) prosthetic arm to form FMNH2. The electrons are transferred through a series of iron-sulfur (Fe-S) clusters in the prosthetic arm and finally to coenzyme Q10 (CoQ), which is reduced to ubiquinol (CoQH2). The flow of electrons changes the redox state of the protein, resulting in a conformational change and pK shift of the ionizable side chain, which pumps four hydrogen ions out of the mitochondrial matrix.[2]

Clinical significance

Pathogenic variants of the mitochondrial gene MT-ND3 are known to cause mtDNA-associated Leigh syndrome, as are variants of MT-ATP6, MT-TL1, MT-TK, MT-TW, MT-TV, MT-ND1, MT-ND2, MT-ND4, MT-ND5, MT-ND6 and MT-CO3. Abnormalities in mitochondrial energy generation result in neurodegenerative disorders like Leigh syndrome, which is characterized by an onset of symptoms between 12 months and three years of age. The symptoms frequently present themselves following a viral infection and include movement disorders and peripheral neuropathy, as well as hypotonia, spasticity and cerebellar ataxia. Roughly half of affected patients die of respiratory or cardiac failure by the age of three. Leigh syndrome is a maternally inherited disorder and its diagnosis is established through genetic testing of the aforementioned mitochondrial genes, including MT-ND3.[3] These complex I genes have been associated with a variety of neurodegenerative disorders, including Leber's hereditary optic neuropathy (LHON), mitochondrial encephalomyopathy with stroke-like episodes (MELAS) and the previously mentioned Leigh syndrome.[4]

References

  1. ^ a b "Entrez Gene: MT-ND3 NADH dehydrogenase subunit 3".
  2. ^ a b c Pratt, Donald Voet, Judith G. Voet, Charlotte W. (2013). "18". Fundamentals of biochemistry : life at the molecular level (4th ed.). Hoboken, NJ: Wiley. pp. 581–620. ISBN 9780470547847.{{cite book}}: CS1 maint: multiple names: authors list (link)
  3. ^ a b Thorburn DR, Rahman S (1993–2015). "Mitochondrial DNA-Associated Leigh Syndrome and NARP". In Pagon RA, Adam MP, Ardinger HH, Wallace SE, Amemiya A, Bean LJ, Bird TD, Dolan CR, Fong CT, Smith RJ Stephens K (ed.). GeneReviews [Internet]. Seattle (WA): University of Washington, Seattle. {{cite book}}: External link in |chapterurl= (help); Unknown parameter |chapterurl= ignored (|chapter-url= suggested) (help)CS1 maint: multiple names: editors list (link)
  4. ^ a b La Morgia C, Caporali L, Gandini F, Olivieri A, Toni F, Nassetti S, Brunetto D, Stipa C, Scaduto C, Parmeggiani A, Tonon C, Lodi R, Torroni A, Carelli V. "Association of the mtDNA m.4171C→A/MT-ND1 mutation with both optic neuropathy and bilateral brainstem lesions". BMC Neurology. 14: 116. doi:10.1186/1471-2377-14-116. PMC 4047257. PMID 24884847.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  5. ^ Zong NC, Li H, Li H, Lam MP, Jimenez RC, Kim CS, Deng N, Kim AK, Choi JH, Zelaya I, Liem D, Meyer D, Odeberg J, Fang C, Lu HJ, Xu T, Weiss J, Duan H, Uhlen M, Yates JR, Apweiler R, Ge J, Hermjakob H, Ping P (Oct 2013). "Integration of cardiac proteome biology and medicine by a specialized knowledgebase". Circulation Research. 113 (9): 1043–53. doi:10.1161/CIRCRESAHA.113.301151. PMC 4076475. PMID 23965338.
  6. ^ "NADH-ubiquinone oxidoreductase chain 3". Cardiac Organellar Protein Atlas Knowledgebase (COPaKB).
  7. ^ "MT-ND3 - NADH-ubiquinone oxidoreductase chain 3 - Homo sapiens (Human)". UniProt.org: a hub for protein information. The UniProt Consortium.

Further reading

External links

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