PPP2R5D

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Identifiers
Aliases
External IDs	GeneCards: [1]
Orthologs
Species	Human	Mouse
Entrez	n/a	n/a
Ensembl	n/a	n/a
UniProt	n/a	n/a
RefSeq (mRNA)	n/a	n/a
RefSeq (protein)	n/a	n/a
Location (UCSC)	n/a	n/a
PubMed search	n/a	n/a
Wikidata
View/Edit Human

Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit delta isoform is an enzyme that in humans is encoded by the PPP2R5D gene.

Function

The product of this gene belongs to the phosphatase 2A regulatory subunit B family. Protein phosphatase 2A is one of the four major Ser/Thr phosphatases, and it is implicated in the negative control of cell growth and division. It consists of a common heteromeric core enzyme, which is composed of a catalytic subunit and a constant regulatory subunit, that associates with a variety of regulatory subunits. The B regulatory subunit might modulate substrate selectivity and catalytic activity. This gene encodes a delta isoform of the regulatory subunit B56 subfamily. Alternatively spliced transcript variants encoding different isoforms have been identified.

Interactions

PPP2R5D has been shown to interact with:

• HAND2,
• PPP2CA,
• PPP2R1B, and
• liprin-alpha-1.

Further reading

• Le Rouzic E, Benichou S (2006). "The Vpr protein from HIV-1: distinct roles along the viral life cycle". Retrovirology. 2: 11. doi:10.1186/1742-4690-2-11. PMC 554975. PMID 15725353.
• Zhao RY, Elder RT (2005). "Viral infections and cell cycle G2/M regulation". Cell Res. 15 (3): 143–9. doi:10.1038/sj.cr.7290279. PMID 15780175.
• Zhao RY, Bukrinsky M, Elder RT (2005). "HIV-1 viral protein R (Vpr) & host cellular responses". Indian J. Med. Res. 121 (4): 270–86. PMID 15817944.
• Tanabe O, Nagase T, Murakami T, Nozaki H, Usui H, Nishito Y, Hayashi H, Kagamiyama H, Takeda M (1996). "Molecular cloning of a 74-kDa regulatory subunit (B" or delta) of human protein phosphatase 2A". FEBS Lett. 379 (1): 107–11. doi:10.1016/0014-5793(95)01500-0. PMID 8566219.
• McCright B, Rivers AM, Audlin S, Virshup DM (1996). "The B56 family of protein phosphatase 2A (PP2A) regulatory subunits encodes differentiation-induced phosphoproteins that target PP2A to both nucleus and cytoplasm". J. Biol. Chem. 271 (36): 22081–9. doi:10.1074/jbc.271.36.22081. PMID 8703017.
• McCright B, Brothman AR, Virshup DM (1997). "Assignment of human protein phosphatase 2A regulatory subunit genes b56alpha, b56beta, b56gamma, b56delta, and b56epsilon (PPP2R5A-PPP2R5E), highly expressed in muscle and brain, to chromosome regions 1q41, 11q12, 3p21, 6p21.1, and 7p11.2 --> p12". Genomics. 36 (1): 168–70. doi:10.1006/geno.1996.0438. PMID 8812429.
• Tung HY, De Rocquigny H, Zhao LJ, Cayla X, Roques BP, Ozon R (1997). "Direct activation of protein phosphatase-2A0 by HIV-1 encoded protein complex NCp7:vpr". FEBS Lett. 401 (2–3): 197–201. doi:10.1016/S0014-5793(96)01470-6. PMID 9013886.
• Tanabe O, Gomez GA, Nishito Y, Usui H, Takeda M (1997). "Molecular heterogeneity of the cDNA encoding a 74-kDa regulatory subunit (B" or delta) of human protein phosphatase 2A". FEBS Lett. 408 (1): 52–6. doi:10.1016/S0014-5793(97)00392-X. PMID 9180267.
• Ruediger R, Brewis N, Ohst K, Walter G (1998). "Increasing the ratio of PP2A core enzyme to holoenzyme inhibits Tat-stimulated HIV-1 transcription and virus production". Virology. 238 (2): 432–43. doi:10.1006/viro.1997.8873. PMID 9400615.
• Elder RT, Yu M, Chen M, Zhu X, Yanagida M, Zhao Y (2001). "HIV-1 Vpr induces cell cycle G2 arrest in fission yeast (Schizosaccharomyces pombe) through a pathway involving regulatory and catalytic subunits of PP2A and acting on both Wee1 and Cdc25". Virology. 287 (2): 359–70. doi:10.1006/viro.2001.1007. PMID 11531413.
• Hrimech M, Yao XJ, Branton PE, Cohen EA (2002). "Human immunodeficiency virus type 1 Vpr-mediated G(2) cell cycle arrest: Vpr interferes with cell cycle signaling cascades by interacting with the B subunit of serine/threonine protein phosphatase 2A". EMBO J. 21 (14): 3918. doi:10.1093/emboj/cdf420. PMC 126131. PMID 12110603.
• Firulli BA, Howard MJ, McDaid JR, McIlreavey L, Dionne KM, Centonze VE, Cserjesi P, Virshup DM, Firulli AB (2004). "PKA, PKC, and the protein phosphatase 2A influence HAND factor function: a mechanism for tissue-specific transcriptional regulation". Mol. Cell. 12 (5): 1225–37. doi:10.1016/S1097-2765(03)00425-8. PMID 14636580.
• Surpili MJ, Delben TM, Kobarg J (2004). "Identification of proteins that interact with the central coiled-coil region of the human protein kinase NEK1". Biochemistry. 42 (51): 15369–76. doi:10.1021/bi034575v. PMID 14690447.