MT-RNR1

mitochondrially encoded 12S RNA
Identifiers
Symbol	MT-RNR1
Alt. symbols	MTRNR1
Entrez	4549
HUGO	7470
Other data
Locus	Chr. MT

Mitochondrially encoded 12S RNA (often abbreviated as 12S) is a 959 nt long mitochondrial ribosomal RNA (rRNA). In humans, 12S is encoded by the MTRNR1 gene.

All animal mitochondria genomes contain 37 genes: 2 rRNA, 22 tRNA and 13 mRNA. These are very useful in phylogenetic studies, in particular the 12S and 16S rRNAs.

Mutations in the MTRNR1 gene may be associated with hearing loss.^[1]

External links

GeneReviews/NCBI/NIH/UW entry on Nonsyndromic Hearing Loss and Deafness, Mitochondrial

References

↑ Ballana E, Morales E, Rabionet R, et al. (March 2006). "Mitochondrial 12S rRNA gene mutations affect RNA secondary structure and lead to variable penetrance in hearing impairment". Biochem. Biophys. Res. Commun. 341 (4): 950–7. doi:10.1016/j.bbrc.2006.01.049. PMID 16458854.

Ribosomal RNA / ribosome subunits

Prokaryotes (70S)

Large

50S

23S

Small

30S

16S

Eukaryotes (80S)

Cytoplasmic	Large 60S 5S 5.8S 28S Small 40S 18S

Mitochondrial	MT-RNR1, 12S MT-RNR2, 16S

Mitochondrial proteins

Outer membrane

fatty acid degradation	Carnitine palmitoyltransferase I Long-chain-fatty-acid—CoA ligase

tryptophan metabolism	Kynureninase

monoamine neurotransmitter metabolism	Monoamine oxidase

Intermembrane space

Inner membrane

oxidative phosphorylation	Coenzyme Q – cytochrome c reductase Cytochrome c NADH dehydrogenase Succinate dehydrogenase

pyrimidine metabolism	Dihydroorotate dehydrogenase

mitochondrial shuttle	Malate-aspartate shuttle Glycerol phosphate shuttle

other	Glutamate aspartate transporter Glycerol-3-phosphate dehydrogenase ATP synthase Carnitine palmitoyltransferase II Uncoupling protein

Matrix

citric acid cycle	Citrate synthase Aconitase Isocitrate dehydrogenase Oxoglutarate dehydrogenase complex Succinyl coenzyme A synthetase Fumarase Malate dehydrogenase

anaplerotic reactions	Aspartate transaminase Glutamate dehydrogenase Pyruvate dehydrogenase complex

urea cycle	Carbamoyl phosphate synthetase I Ornithine transcarbamylase N-Acetylglutamate synthase

alcohol metabolism	ALDH2

PMPCB

Other/to be sorted

steroidogenesis	Cholesterol side-chain cleavage enzyme Steroid 11-beta-hydroxylase Aldosterone synthase Frataxin

Mitochondrial membrane transport protein Mitochondrial permeability transition pore Mitochondrial carrier

Mitochondrial DNA

Complex I	MT-ND1 MT-ND2 MT-ND3 MT-ND4 MT-ND4L MT-ND5 MT-ND6

Complex III	MT-CYB

Complex IV	MT-CO1 MT-CO2 MT-CO3

ATP synthase	MT-ATP6 MT-ATP8

tRNA	MT-TA MT-TC MT-TD MT-TE MT-TF MT-TG MT-TH MT-TI MT-TK MT-TL1 MT-TL2 MT-TM MT-TN MT-TP MT-TQ MT-TR MT-TS1 MT-TS2 MT-TT MT-TV MT-TW MT-TY

see also mitochondrial diseases

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