NDUFS3

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External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez
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NADH dehydrogenase [ubiquinone] iron-sulfur protein 3, mitochondrial is an enzyme that in humans is encoded by the NDUFS3 gene on chromosome 11.[1][2] This gene encodes one of the iron-sulfur protein (IP) components of mitochondrial NADH:ubiquinone oxidoreductase (complex I). Mutations in this gene are associated with Leigh syndrome resulting from mitochondrial complex I deficiency.[2]

Structure

The NDUFS3 gene encodes a protein subunit consisting of 263 amino acids. This protein is synthesized in the cytoplasm and then transported to the mitochondria via a signal peptide. Two mutations that occur in its highly conserved C-terminal region, T145I and R199W, are causally linked to Leigh syndrome and optic atrophy. Nonetheless, despite its crucial biological role, the human NDUFS3 remains structurally poorly understood.[3]

Function

This gene encodes one of the iron-sulfur protein (IP) components of complex I.[2] The 45-subunit NADH:ubiquinone oxidoreductase (complex I) is the first enzyme complex in the electron transport chain of mitochondria.[2][4] As a catalytic subunit, NDUFS3 plays a vital role in the proper assembly of complex I and is recruited to the inner mitochondrial membrane to form an early assembly intermediate with NDUFS2.[4][5] It initiates the assembly of complex I in the mitochondrial matrix.[3]

Cleavage of NDUFS3 by GzmA has been observed to activate a programmed cell death pathway which results in mitochondrial dysfunction and reactive oxygen species (ROS) generation. [6]

Clinical significance

Mutations in the NDUFS3 gene are associated with Mitochondrial Complex I Deficiency, which is autosomal recessive. This deficiency is the most common enzymatic defect of the oxidative phosphorylation disorders.[7][8] Mitochondrial complex I deficiency shows extreme genetic heterogeneity and can be caused by mutation in nuclear-encoded genes or in mitochondrial-encoded genes. There are no obvious genotype-phenotype correlations, and inference of the underlying basis from the clinical or biochemical presentation is difficult, if not impossible.[9] However, the majority of cases are caused by mutations in nuclear-encoded genes.[10][11] It causes a wide range of clinical disorders, ranging from lethal neonatal disease to adult-onset neurodegenerative disorders. Phenotypes include macrocephaly with progressive leukodystrophy, nonspecific encephalopathy, hypertrophic cardiomyopathy, myopathy, liver disease, Leigh syndrome, Leber hereditary optic neuropathy, and some forms of Parkinson disease.[12]

NDUFS3 has also been implicated in breast cancer and ductal carcinoma and, thus, may serve as a novel biomarker for tracking cancer progression and invasiveness.[4]

Model organisms

Model organisms have been used in the study of NDUFS3 function. A conditional knockout mouse line, called Ndufs3tm1a(EUCOMM)Wtsi[21][22] was generated as part of the International Knockout Mouse Consortium program—a high-throughput mutagenesis project to generate and distribute animal models of disease to interested scientists.[23][24][25]

Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion.[19][26] Twenty five tests were carried out on mutant mice and six significant abnormalities were observed.[19] No homozygous mutant embryos were identified during gestation, and therefore none survived until weaning. The remaining tests were carried out on heterozygous mutant adult mice; males had an increased lean body mass and heart weight, and a decrease in some plasma chemistry and haematology parameters.[19]

See also

References

  1. Emahazion T, Beskow A, Gyllensten U, Brookes AJ (Nov 1998). "Intron based radiation hybrid mapping of 15 complex I genes of the human electron transport chain". Cytogenetics and Cell Genetics. 82 (1–2): 115–9. doi:10.1159/000015082. PMID 9763677.
  2. 2.0 2.1 2.2 2.3 "Entrez Gene: NDUFS3 NADH dehydrogenase (ubiquinone) Fe-S protein 3, 30kDa (NADH-coenzyme Q reductase)".
  3. 3.0 3.1 Jaokar, TM; Patil, DP; Shouche, YS; Gaikwad, SM; Suresh, CG (December 2013). "Human mitochondrial NDUFS3 protein bearing Leigh syndrome mutation is more prone to aggregation than its wild-type". Biochimie. 95 (12): 2392–403. doi:10.1016/j.biochi.2013.08.032. PMID 24028823.
  4. 4.0 4.1 4.2 Suhane S, Berel D, Ramanujan VK (Sep 2011). "Biomarker signatures of mitochondrial NDUFS3 in invasive breast carcinoma". Biochemical and Biophysical Research Communications. 412 (4): 590–5. doi:10.1016/j.bbrc.2011.08.003. PMC 3171595. PMID 21867691.
  5. Saada A, Vogel RO, Hoefs SJ, van den Brand MA, Wessels HJ, Willems PH, Venselaar H, Shaag A, Barghuti F, Reish O, Shohat M, Huynen MA, Smeitink JA, van den Heuvel LP, Nijtmans LG (Jun 2009). "Mutations in NDUFAF3 (C3ORF60), encoding an NDUFAF4 (C6ORF66)-interacting complex I assembly protein, cause fatal neonatal mitochondrial disease". American Journal of Human Genetics. 84 (6): 718–27. doi:10.1016/j.ajhg.2009.04.020. PMC 2694978. PMID 19463981.
  6. Lieberman J (May 2010). "Granzyme A activates another way to die". Immunological Reviews. 235 (1): 93–104. doi:10.1111/j.0105-2896.2010.00902.x. PMC 2905780. PMID 20536557.
  7. Kirby DM, Salemi R, Sugiana C, Ohtake A, Parry L, Bell KM, Kirk EP, Boneh A, Taylor RW, Dahl HH, Ryan MT, Thorburn DR (Sep 2004). "NDUFS6 mutations are a novel cause of lethal neonatal mitochondrial complex I deficiency". The Journal of Clinical Investigation. 114 (6): 837–45. doi:10.1172/JCI20683. PMC 516258. PMID 15372108.
  8. McFarland R, Kirby DM, Fowler KJ, Ohtake A, Ryan MT, Amor DJ, Fletcher JM, Dixon JW, Collins FA, Turnbull DM, Taylor RW, Thorburn DR (Jan 2004). "De novo mutations in the mitochondrial ND3 gene as a cause of infantile mitochondrial encephalopathy and complex I deficiency". Annals of Neurology. 55 (1): 58–64. doi:10.1002/ana.10787. PMID 14705112.
  9. Haack TB, Haberberger B, Frisch EM, Wieland T, Iuso A, Gorza M, Strecker V, Graf E, Mayr JA, Herberg U, Hennermann JB, Klopstock T, Kuhn KA, Ahting U, Sperl W, Wilichowski E, Hoffmann GF, Tesarova M, Hansikova H, Zeman J, Plecko B, Zeviani M, Wittig I, Strom TM, Schuelke M, Freisinger P, Meitinger T, Prokisch H (Apr 2012). "Molecular diagnosis in mitochondrial complex I deficiency using exome sequencing". Journal of Medical Genetics. 49 (4): 277–83. doi:10.1136/jmedgenet-2012-100846. PMID 22499348.
  10. Loeffen JL, Smeitink JA, Trijbels JM, Janssen AJ, Triepels RH, Sengers RC, van den Heuvel LP (2000). "Isolated complex I deficiency in children: clinical, biochemical and genetic aspects". Human Mutation. 15 (2): 123–34. doi:10.1002/(SICI)1098-1004(200002)15:2<123::AID-HUMU1>3.0.CO;2-P. PMID 10649489.
  11. Triepels RH, Van Den Heuvel LP, Trijbels JM, Smeitink JA (2001). "Respiratory chain complex I deficiency". American Journal of Medical Genetics. 106 (1): 37–45. doi:10.1002/ajmg.1397. PMID 11579423.
  12. Robinson BH (May 1998). "Human complex I deficiency: clinical spectrum and involvement of oxygen free radicals in the pathogenicity of the defect". Biochimica et Biophysica Acta. 1364 (2): 271–86. doi:10.1016/s0005-2728(98)00033-4. PMID 9593934.
  13. "DEXA data for Ndufs3". Wellcome Trust Sanger Institute.
  14. "Clinical chemistry data for Ndufs3". Wellcome Trust Sanger Institute.
  15. "Haematology data for Ndufs3". Wellcome Trust Sanger Institute.
  16. "Heart weight data for Ndufs3". Wellcome Trust Sanger Institute.
  17. "Salmonella infection data for Ndufs3". Wellcome Trust Sanger Institute.
  18. "Citrobacter infection data for Ndufs3". Wellcome Trust Sanger Institute.
  19. 19.0 19.1 19.2 19.3 Gerdin, AK (2010). "The Sanger Mouse Genetics Programme: High throughput characterisation of knockout mice". Acta Ophthalmologica. 88: 925–7. doi:10.1111/j.1755-3768.2010.4142.x.
  20. Mouse Resources Portal, Wellcome Trust Sanger Institute.
  21. "International Knockout Mouse Consortium".
  22. "Mouse Genome Informatics".
  23. Skarnes WC, Rosen B, West AP, Koutsourakis M, Bushell W, Iyer V, Mujica AO, Thomas M, Harrow J, Cox T, Jackson D, Severin J, Biggs P, Fu J, Nefedov M, de Jong PJ, Stewart AF, Bradley A (Jun 2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature. 474 (7351): 337–42. doi:10.1038/nature10163. PMC 3572410. PMID 21677750.
  24. Dolgin E (Jun 2011). "Mouse library set to be knockout". Nature. 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718.
  25. Collins FS, Rossant J, Wurst W (Jan 2007). "A mouse for all reasons". Cell. 128 (1): 9–13. doi:10.1016/j.cell.2006.12.018. PMID 17218247.
  26. van der Weyden L, White JK, Adams DJ, Logan DW (2011). "The mouse genetics toolkit: revealing function and mechanism". Genome Biology. 12 (6): 224. doi:10.1186/gb-2011-12-6-224. PMC 3218837. PMID 21722353.

Further reading