mitochondrially encoded tRNA valine
Last updated 8 May 2023
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The MT-TV gene provides instructions for making a particular type of RNA, a molecule that is a chemical cousin of DNA. This type of RNA, called transfer RNA (tRNA), helps assemble protein building blocks known as amino acids into full-length, functioning proteins. The MT-TV gene provides instructions for a specific form of transfer RNA that is designated as tRNAVal. This molecule attaches to a particular amino acid, valine (Val), and inserts it into the appropriate locations in many different proteins.
Normal function
The MT-TV gene provides instructions for making a particular type of RNA, a molecule that is a chemical cousin of DNA. This type of RNA, called transfer RNA (tRNA), helps assemble protein building blocks known as amino acids into full-length, functioning proteins. The MT-TV gene provides instructions for a specific form of transfer RNA that is designated as tRNAVal. This molecule attaches to a particular amino acid, valine (Val), and inserts it into the appropriate locations in many different proteins.
The tRNAVal molecule is present only in cellular structures called mitochondria. These structures convert energy from food into a form that cells can use. Through a process called oxidative phosphorylation, mitochondria use oxygen and simple sugars to create adenosine triphosphate (ATP), the cell's main energy source. The tRNAVal molecule is involved in the assembly of proteins that carry out oxidative phosphorylation.
Conditions referring to this gene or chromosome
Other names
MTTV
tRNA valine
tRNA-Val, mitochondrial
Further reading and references
- mitochondrially encoded tRNA valine; MedlinePlus, National Library of Medicine.
- Blakely EL, Poulton J, Pike M, Wojnarowska F, Turnbull DM, McFarland R, Taylor RW. Childhood neurological presentation of a novel mitochondrial tRNA(Val) gene mutation. J Neurol Sci. 2004 Oct 15;225(1-2):99-103. doi: 10.1016/j.jns.2004.07.007.
- Chalmers RM, Lamont PJ, Nelson I, Ellison DW, Thomas NH, Harding AE, Hammans SR. A mitochondrial DNA tRNA(Val) point mutation associated with adult-onset Leigh syndrome. Neurology. 1997 Aug;49(2):589-92. doi: 10.1212/wnl.49.2.589.
- de Coo IF, Sistermans EA, de Wijs IJ, Catsman-Berrevoets C, Busch HF, Scholte HR, de Klerk JB, van Oost BA, Smeets HJ. A mitochondrial tRNA(Val) gene mutation (G1642A) in a patient with mitochondrial myopathy, lactic acidosis, and stroke-like episodes. Neurology. 1998 Jan;50(1):293-5. doi: 10.1212/wnl.50.1.293.
- Menotti F, Brega A, Diegoli M, Grasso M, Modena MG, Arbustini E. A novel mtDNA point mutation in tRNA(Val) is associated with hypertrophic cardiomyopathy and MELAS. Ital Heart J. 2004 Jun;5(6):460-5.
- Taylor RW, Chinnery PF, Haldane F, Morris AA, Bindoff LA, Wilson J, Turnbull DM. MELAS associated with a mutation in the valine transfer RNA gene of mitochondrial DNA. Ann Neurol. 1996 Sep;40(3):459-62. doi: 10.1002/ana.410400318.
- Tiranti V, D'Agruma L, Pareyson D, Mora M, Carrara F, Zelante L, Gasparini P, Zeviani M. A novel mutation in the mitochondrial tRNA(Val) gene associated with a complex neurological presentation. Ann Neurol. 1998 Jan;43(1):98-101. doi: 10.1002/ana.410430116.
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