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Anti-oncogene that plays a role in cell cycle regulation; decreases cell doubling time and anchorage-dependent growth; shortens the duration of G1 transit time and G1/S transition. When constitutively expressed, increases CDK4 and CDK6 kinases activity and CCND1/cyclin D1 protein level, as well as G1 cyclin/CDK complex formation. Involved in translation initiation; promotes recruitment of aminoacetyled initiator tRNA to P site of 40S ribosomes. Can promote release of deacylated tRNA and mRNA from recycled 40S subunits following ABCE1-mediated dissociation of post-termination ribosomal complexes into subunits. Plays a role as translation enhancer; recruits the density-regulated protein/DENR and binds to the cap complex of the 5'-terminus of mRNAs, subsequently altering the mRNA translation profile; up-regulates protein levels of BCL2L2, TFDP1, MRE11, CCND1 and E2F1, while mRNA levels remains constant. Hyperactivates DNA damage signaling pathway; increased gamma-irradiation-induced phosphorylation of histone H2AX, and induces damage foci formation. Increases the overall number of chromosomal abnormalities such as larger chromosomes formation and multiple chromosomal fusions when overexpressed in gamma-irradiated cells. May play a role in promoting lymphoid tumor development: lymphoid cell lines overexpressing MCTS1 exhibit increased growth rates and display increased protection against apoptosis. May contribute to the pathogenesis and progression of breast cancer via promotion of angiogenesis through the decline of inhibitory THBS1/thrombospondin-1, and inhibition of apoptosis. Involved in the process of proteasome degradation to down-regulate Tumor suppressor p53/TP53 in breast cancer cell; Positively regulates phosphorylation of MAPK1 and MAPK3. Involved in translation initiation; promotes aminoacetyled initiator tRNA to P site of 40S ribosomes. Can promote release of deacylated tRNA and mRNA from recycled 40S subunits following ABCE1-mediated dissociation of post-termination ribosomal complexes into subunits.
基因功能參考文獻:
PKC inhibitor sotrastaurin induced cell apoptosis and cell cycle arrest in DLBCL cells potentially through regulating the expression of MCT-1 PMID: 29534146
findings elucidate how the DENR-MCT-1 dimer interacts with the ribosome and have functional implications for the mechanism of unconventional translation initiation and reinitiation. PMID: 28723557
DENR binds to the P-site of the 40S ribosomal subunit and together with MCTS1 forms a tRNA binding surface and interferes with eIF1/eIF2/eIF3 binding, thus operating in post-termination ribosome recycling and translation re-initiation PMID: 28723557
Reinitiation complexes involving initiation factors eIF2D, MCT-1, and DENR controls the translation of a large fraction of mammalian cellular mRNAs. PMID: 28732596
Overexpression of MCT1 is associated with gliomas. PMID: 23258846
MCT-1 is a new centrosomal-associated oncoprotein, and that it plays a novel role in the regulation of mitosis signifies its important function in the process of tumorigenesis. PMID: 22336915
The present study indicates possible involvement of a protein kinase (PK)C- and PKA-mediated pathway associated with expression of MCT1 and lactate transport in rhabdomyosarcoma cells. PMID: 20823576
The oppositions between MCT-1 and p53 are firstly confirmed at multistage processes that include transcription control, mRNA metabolism, and protein expression PMID: 21138557
The result suggest that co-expression of CD147 and MCT1/MCT4 is related to drug resistance during EOC metastasis and could be useful therapeutic targets to prevent the development of incurable, recurrent and drug resistance EOC. PMID: 20658178
Results describe the expression and purification of MCT-1 in insect cells using a baculovirus expression system. PMID: 20076993
tumor cell lines overexpressing MCT-1 exhibited increased growth rates and displayed increased protection against apoptosis induced by serum starvation PMID: 12637315
demonstrated the presence of sequence-specific DNA-binding protein in nuclear extracts designated as LMBF; the 26-mer oligonucleotide containing the LMBF binding site is required for maximum transcriptional activity of the MCT-1 promoter PMID: 12938157
Loss of p53 and MCT-1 overexpression synergistically promote chromosome instability and tumorigenicity. PMID: 19372582
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亞細胞定位:
Cytoplasm. Note=Nuclear relocalization after DNA damage.
蛋白家族:
MCTS1 family
組織特異性:
Ubiquitous. Over-expressed in T-cell lymphoid cell lines and in non-Hodgkin lymphoma cell lines as well as in a subset of primary large B-cell lymphomas.