CKMT1B

Last updated
CKMT1B
Protein CKMT1B PDB 1qk1.png
Available structures
PDB Ortholog search: PDBe RCSB
Identifiers
Aliases CKMT1B , CKMT, CKMT1, UMTCK, creatine kinase, mitochondrial 1B
External IDs OMIM: 123290 MGI: 99441 HomoloGene: 69058 GeneCards: CKMT1B
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_020990
NM_001375484

NM_009897
NM_001355069

RefSeq (protein)

NP_034027
NP_001341998

Location (UCSC) Chr 15: 43.59 – 43.6 Mb Chr 2: 121.19 – 121.19 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

Creatine kinase, mitochondrial 1B also known as CKMT1B is one of two genes which encode the ubiquitous mitochondrial creatine kinase (ubiquitous mtCK or CKMT1). [5]

Contents

Function

Mitochondrial creatine (MtCK) kinase is responsible for the transfer of high energy phosphate from mitochondria to the cytosolic carrier, creatine. It belongs to the creatine kinase isoenzyme family. It exists as two isoenzymes, sarcomeric MtCK (CKMT2) and ubiquitous MtCK, encoded by separate genes. Mitochondrial creatine kinase occurs in two different oligomeric forms: dimers and octamers, in contrast to the exclusively dimeric cytosolic creatine kinase isoenzymes. Ubiquitous mitochondrial creatine kinase has 80% homology with the coding exons of sarcomeric mitochondrial creatine kinase. Two genes located near each other on chromosome 15 (CKMT1A and CKMT1B (this gene)) have been identified which encode identical mitochondrial creatine kinase proteins. [5]

Clinical significance

Many malignant cancers with poor prognosis have shown overexpression of ubiquitous mitochondrial creatine kinase; this may be related to high energy turnover and failure to eliminate cancer cells via apoptosis. [5]

Related Research Articles

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<span class="mw-page-title-main">Theo Wallimann</span>

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Creatine kinase U-type, mitochondrial, also called ubiquitous mitochondrial creatine kinase (uMtCK), is in humans encoded by CKMT1A gene. CKMT1A catalyzes the reversible transfer of the γ-phosphate group of ATP to the guanidino group of Cr to yield ADP and PCr. The impairment of CKMT1A has been reported in ischaemia, cardiomyopathy, and neurodegenerative disorders. Overexpression of CKMT1A has been reported related with several tumors.

<span class="mw-page-title-main">CKM (gene)</span> Protein-coding gene in the species Homo sapiens

Creatine kinase, muscle also known as MCK is a creatine kinase that in humans is encoded by the MCK gene.

<span class="mw-page-title-main">ATP:guanido phosphotransferase family</span>

In molecular biology, the ATP:guanido phosphotransferase family is a family of structurally and functionally related enzymes, that reversibly catalyse the transfer of phosphate between ATP and various phosphagens. The enzymes belonging to this family include:

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000237289 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000000308 - Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. 1 2 3 "Entrez Gene: CKMT1B creatine kinase, mitochondrial 1B".

Further reading