PPP1R12B

PPP1R12B
Identifiers
Aliases	PPP1R12B , MYPT2, PP1bp55, protein phosphatase 1 regulatory subunit 12B
External IDs	OMIM: 603768 HomoloGene: 136757 GeneCards: PPP1R12B
Gene location (Human)
Chr.	Chromosome 1 (human)
End	202,592,706 bp
RNA expression pattern
	Top expressed in
	saphenous vein; ; right coronary artery; ; right ventricle; ; popliteal artery; ; thoracic aorta; ; ascending aorta; ; gastric mucosa; ; seminal vesicula; ; gallbladder; ; myometrium;
	n/a
	More reference expression data
	; ;
	More reference expression data
Gene ontology
Molecular function	enzyme activator activity ; protein binding ; protein kinase binding ; phosphatase regulator activity ; enzyme inhibitor activity ;
Cellular component	cytoplasm ; cytosol ; A band ; Z disc ; nucleoplasm ; cytoskeleton ;
Biological process	regulation of muscle contraction ; positive regulation of catalytic activity ; signal transduction ; regulation of catalytic activity ; negative regulation of catalytic activity ; G2/M transition of mitotic cell cycle ;
	Sources:Amigo / QuickGO
Orthologs
	4660
	n/a
	ENSG00000077157
	n/a
	O60237
	n/a
NM_001167857 ; NM_001167858 ; NM_001197131 ; NM_002481 ; NM_032103 ;
	NM_032104 ; NM_032105 ; NM_001331029
	n/a
NP_001161329 ; NP_001161330 ; NP_001184060 ; NP_001317958 ; NP_002472 ;
	NP_115286 ; NP_115287
	n/a
	Wikidata
View/Edit Human

Last updated November 08, 2023

Protein phosphatase 1 regulatory subunit 12B is an enzyme that in humans is encoded by the PPP1R12B gene.^[3]^[4]

Myosin light chain phosphatase (MLCP) consists of three subunits- catalytic subunit, large subunit/myosin binding subunit (MBS) and small subunit (sm-M20). This gene is a multi-functional gene which encodes both MBS and sm-M20. MLCP regulates myosins and the dephosphorylation is enhanced by the presence of MBS. The sm-M20 is suggested to play a regulatory role in muscle contraction by binding to MBS. MBS is also encoded by another gene, myosin light chain phosphatase target subunit 1. sm-M20 shows higher binding affinity to this gene product than to myosin light chain phosphatase target subunit 2-MBS even though the two MBS proteins are highly similar. Although both MBSs increase the activity of MLCP, myosin light chain phosphatase target subunit 1-MBS is a more efficient activator. There are four alternatively spliced transcript variants described; two alter the MBS coding region and two alter the sm-M20 coding region of this gene.^[4]

Interactions

PPP1R12B has been shown to interact with Interleukin 16.^[5]

Related Research Articles

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References

1 2 3 GRCh38: Ensembl release 89: ENSG00000077157 - Ensembl, May 2017
↑ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
↑ Fujioka M, Takahashi N, Odai H, Araki S, Ichikawa K, Feng J, Nakamura M, Kaibuchi K, Hartshorne DJ, Nakano T, Ito M (Jun 1998). "A new isoform of human myosin phosphatase targeting/regulatory subunit (MYPT2): cDNA cloning, tissue expression, and chromosomal mapping". Genomics. 49 (1): 59–68. doi:10.1006/geno.1998.5222. PMID 9570949.
1 2 "Entrez Gene: PPP1R12B protein phosphatase 1, regulatory (inhibitor) subunit 12B".
↑ Bannert, Norbert; Vollhardt Karin; Asomuddinov Bakhtier; Haag Marion; König Herbert; Norley Stephen; Kurth Reinhard (Oct 2003). "PDZ Domain-mediated interaction of interleukin-16 precursor proteins with myosin phosphatase targeting subunits". J. Biol. Chem. United States. 278 (43): 42190–9. doi: 10.1074/jbc.M306669200 . ISSN 0021-9258. PMID 12923170.

Somlyo AP, Wu X, Walker LA, Somlyo AV (1999). "Pharmacomechanical coupling: the role of calcium, G-proteins, kinases and phosphatases". Rev. Physiol. Biochem. Pharmacol. 134: 201–34. doi:10.1007/3-540-64753-8_5. ISBN 978-3-540-64753-9. PMID 10087910.
Seki N, Ohira M, Nagase T, et al. (1998). "Characterization of cDNA clones in size-fractionated cDNA libraries from human brain". DNA Res. 4 (5): 345–9. doi: 10.1093/dnares/4.5.345 . PMID 9455484.
Moorhead G, Johnson D, Morrice N, Cohen P (1998). "The major myosin phosphatase in skeletal muscle is a complex between the beta-isoform of protein phosphatase 1 and the MYPT2 gene product". FEBS Lett. 438 (3): 141–4. doi: 10.1016/S0014-5793(98)01276-9 . PMID 9827534. S2CID 35052936.
Somlyo AP (1999). "Kinases, myosin phosphatase and Rho proteins: curiouser and curiouser". J. Physiol. 516 (3): 630. doi:10.1111/j.1469-7793.1999.0630u.x. PMC 2269296 . PMID 10200412.
Arimura T, Suematsu N, Zhou YB, et al. (2001). "Identification, characterization, and functional analysis of heart-specific myosin light chain phosphatase small subunit". J. Biol. Chem. 276 (9): 6073–82. doi: 10.1074/jbc.M008566200 . PMID 11067852.
Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. Bibcode:2002PNAS...9916899M. doi: 10.1073/pnas.242603899 . PMC 139241 . PMID 12477932.
Bannert N, Vollhardt K, Asomuddinov B, et al. (2004). "PDZ Domain-mediated interaction of interleukin-16 precursor proteins with myosin phosphatase targeting subunits". J. Biol. Chem. 278 (43): 42190–9. doi: 10.1074/jbc.M306669200 . PMID 12923170.
Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The Status, Quality, and Expansion of the NIH Full-Length cDNA Project: The Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928 . PMID 15489334.
Rual JF, Venkatesan K, Hao T, et al. (2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173–8. Bibcode:2005Natur.437.1173R. doi:10.1038/nature04209. PMID 16189514. S2CID 4427026.
Okamoto R, Kato T, Mizoguchi A, et al. (2007). "Characterization and function of MYPT2, a target subunit of myosin phosphatase in heart". Cell. Signal. 18 (9): 1408–16. doi:10.1016/j.cellsig.2005.11.001. PMID 16431080.
Gregory SG, Barlow KF, McLay KE, et al. (2006). "The DNA sequence and biological annotation of human chromosome 1". Nature. 441 (7091): 315–21. Bibcode:2006Natur.441..315G. doi: 10.1038/nature04727 . PMID 16710414.

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[refGRCh38Ensembl-1] 1 2 3 GRCh38: Ensembl release 89: ENSG00000077157 - Ensembl, May 2017

[2] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[pmid9570949-3] Fujioka M, Takahashi N, Odai H, Araki S, Ichikawa K, Feng J, Nakamura M, Kaibuchi K, Hartshorne DJ, Nakano T, Ito M (Jun 1998). "A new isoform of human myosin phosphatase targeting/regulatory subunit (MYPT2): cDNA cloning, tissue expression, and chromosomal mapping". Genomics. 49 (1): 59–68. doi:10.1006/geno.1998.5222. PMID 9570949.

[entrez-4] 1 2 "Entrez Gene: PPP1R12B protein phosphatase 1, regulatory (inhibitor) subunit 12B".

[pmid12923170-5] Bannert, Norbert; Vollhardt Karin; Asomuddinov Bakhtier; Haag Marion; König Herbert; Norley Stephen; Kurth Reinhard (Oct 2003). "PDZ Domain-mediated interaction of interleukin-16 precursor proteins with myosin phosphatase targeting subunits". J. Biol. Chem. United States. 278 (43): 42190–9. doi: 10.1074/jbc.M306669200 . ISSN 0021-9258. PMID 12923170.

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PPP1R12B

Contents

Interactions

Related Research Articles

References

Further reading