NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial also known as NADH-ubiquinone oxidoreductase 18 kDa subunit is an enzyme that in humans is encoded by the NDUFS4gene.[5][6][7]
Function
Complex I, or NADH:ubiquinoneoxidoreductase, the first multisubunit enzyme complex of the mitochondrial respiratory chain, plays a vital role in cellular ATP production, the primary source of energy for many crucial processes in living cells. It removes electrons from NADH and passes them by a series of different protein-coupled redox centers to the electron acceptor ubiquinone. In well-coupled mitochondria, the electron flux leads to ATP generation via the building of a proton gradient across the inner membrane. Complex I is composed of at least 41 subunits, of which 7 are encoded by the mitochondrial genome (ND1-6, ND4L) and the remainder by nuclear genes.[5][7]
Clinical significance
Mutations in the ACAD9 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.[8][9] 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.[10] However, the majority of cases are caused by mutations in nuclear-encoded genes.[11][12] 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.[13] Complex I deficiency with autosomal recessive inheritance results from mutation in nuclear-encoded subunit genes, including NDUFV1, NDUFV2, NDUFS1, NDUFS2, NDUFS3, NDUFS6, NDUFS7, NDUFS8, NDUFA2, NDUFA11, NDUFAF3, NDUFAF10, NDUFB3, NDUFB9, ACAD9, FOXRED1, and MTFMT.
^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. PMID9763677.
^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. PMID14705112.
^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. PMID22499348.
^Triepels RH, Van Den Heuvel LP, Trijbels JM, Smeitink JA (NaN). "Respiratory chain complex I deficiency". American Journal of Medical Genetics. 106 (1): 37–45. doi:10.1002/ajmg.1397. PMID11579423. {{cite journal}}: Check date values in: |date= (help)
^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. PMID9593934.
Further reading
Papa S, Sardanelli AM, Scacco S, Petruzzella V, Technikova-Dobrova Z, Vergari R, Signorile A (Feb 2002). "The NADH: ubiquinone oxidoreductase (complex I) of the mammalian respiratory chain and the cAMP cascade". Journal of Bioenergetics and Biomembranes. 34 (1): 1–10. doi:10.1023/A:1013863018115. PMID11860175.
Pilkington SJ, Skehel JM, Gennis RB, Walker JE (Feb 1991). "Relationship between mitochondrial NADH-ubiquinone reductase and a bacterial NAD-reducing hydrogenase". Biochemistry. 30 (8): 2166–75. doi:10.1021/bi00222a021. PMID1900194.
Loeffen JL, Triepels RH, van den Heuvel LP, Schuelke M, Buskens CA, Smeets RJ, Trijbels JM, Smeitink JA (Dec 1998). "cDNA of eight nuclear encoded subunits of NADH:ubiquinone oxidoreductase: human complex I cDNA characterization completed". Biochemical and Biophysical Research Communications. 253 (2): 415–22. doi:10.1006/bbrc.1998.9786. PMID9878551.
Triepels RH, Hanson BJ, van den Heuvel LP, Sundell L, Marusich MF, Smeitink JA, Capaldi RA (Mar 2001). "Human complex I defects can be resolved by monoclonal antibody analysis into distinct subunit assembly patterns". The Journal of Biological Chemistry. 276 (12): 8892–7. doi:10.1074/jbc.M009903200. PMID11112787.{{cite journal}}: CS1 maint: unflagged free DOI (link)
Papa S, Scacco S, Sardanelli AM, Vergari R, Papa F, Budde S, van den Heuvel L, Smeitink J (Feb 2001). "Mutation in the NDUFS4 gene of complex I abolishes cAMP-dependent activation of the complex in a child with fatal neurological syndrome". FEBS Letters. 489 (2–3): 259–62. doi:10.1016/S0014-5793(00)02334-6. PMID11165261.
Petruzzella V, Vergari R, Puzziferri I, Boffoli D, Lamantea E, Zeviani M, Papa S (Mar 2001). "A nonsense mutation in the NDUFS4 gene encoding the 18 kDa (AQDQ) subunit of complex I abolishes assembly and activity of the complex in a patient with Leigh-like syndrome". Human Molecular Genetics. 10 (5): 529–35. doi:10.1093/hmg/10.5.529. PMID11181577.
Roef MJ, Reijngoud DJ, Jeneson JA, Berger R, de Meer K (Apr 2002). "Resting oxygen consumption and in vivo ADP are increased in myopathy due to complex I deficiency". Neurology. 58 (7): 1088–93. doi:10.1212/wnl.58.7.1088. PMID11940698.
Papa S (Sep 2002). "The NDUFS4 nuclear gene of complex I of mitochondria and the cAMP cascade". Biochimica et Biophysica Acta. 1555 (1–3): 147–53. doi:10.1016/S0005-2728(02)00270-0. PMID12206907.
Bénit P, Steffann J, Lebon S, Chretien D, Kadhom N, de Lonlay P, Goldenberg A, Dumez Y, Dommergues M, Rustin P, Munnich A, Rötig A (May 2003). "Genotyping microsatellite DNA markers at putative disease loci in inbred/multiplex families with respiratory chain complex I deficiency allows rapid identification of a novel nonsense mutation (IVS1nt -1) in the NDUFS4 gene in Leigh syndrome". Human Genetics. 112 (5–6): 563–6. doi:10.1007/s00439-002-0884-2. PMID12616398.
Scacco S, Petruzzella V, Budde S, Vergari R, Tamborra R, Panelli D, van den Heuvel LP, Smeitink JA, Papa S (Nov 2003). "Pathological mutations of the human NDUFS4 gene of the 18-kDa (AQDQ) subunit of complex I affect the expression of the protein and the assembly and function of the complex". The Journal of Biological Chemistry. 278 (45): 44161–7. doi:10.1074/jbc.M307615200. PMID12944388.{{cite journal}}: CS1 maint: unflagged free DOI (link)
Budde SM, van den Heuvel LP, Smeets RJ, Skladal D, Mayr JA, Boelen C, Petruzzella V, Papa S, Smeitink JA (2004). "Clinical heterogeneity in patients with mutations in the NDUFS4 gene of mitochondrial complex I". Journal of Inherited Metabolic Disease. 26 (8): 813–5. doi:10.1023/B:BOLI.0000010003.14113.af. PMID14765537.
Papa S, Petruzzella V, Scacco S, Vergari R, Panelli D, Tamborra R, Corsi P, Picciariello M, Lambo R, Bertini E, Santorelli FM (Mar 2004). "Respiratory complex I in brain development and genetic disease". Neurochemical Research. 29 (3): 547–60. doi:10.1023/B:NERE.0000014825.42365.16. PMID15038602.
Petruzzella V, Panelli D, Torraco A, Stella A, Papa S (Jul 2005). "Mutations in the NDUFS4 gene of mitochondrial complex I alter stability of the splice variants". FEBS Letters. 579 (17): 3770–6. doi:10.1016/j.febslet.2005.05.035. PMID15975579.
Tao WA, Wollscheid B, O'Brien R, Eng JK, Li XJ, Bodenmiller B, Watts JD, Hood L, Aebersold R (Aug 2005). "Quantitative phosphoproteome analysis using a dendrimer conjugation chemistry and tandem mass spectrometry". Nature Methods. 2 (8): 591–8. doi:10.1038/nmeth776. PMID16094384.