DUSP3 recombinant protein

DUSP3 Protein, Human, Recombinant (His & GST Tag)

Cat. Num. AAA8120006

• Gene Names: DUSP3; VHR
• Purity: >96% as determined by SDS-PAGE
• Synonyms: DUSP3; DUSP3 Protein; Human; Recombinant (His & GST Tag); Human DUSP3/VHR Protein (His & GST Tag); VHR Protein; dual specificity phosphatase 3; DUSP3 recombinant protein

• Host: Baculovirus-Insect Cells
• Purity/Purification: >96% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile 20mM Tris, 500mM NaCl, pH8.0, 2mM GSH. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Pro185

• Species: Human
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: Met
• Tag: N-GST & His
• Protein Construction: A DNA sequence encoding the human VHR (P51452)(Met 1-Pro 185) was fused with the N-terminal polyhistidine-tagged GST tag at the N-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Related Product Information for DUSP3 recombinant protein

Background: Vaccinia H1-related phosphatase (VHR) is classified as a dual-specificity phosphatase (DUSP), and the other name is dual-specificity phosphatase 3 (DUSP3). DUSPs are a heterogeneous group of protein phosphatases that can dephosphorylate both phosphotyrosine and phosphoserine/phosphothreonine residues within the one substrate. Unlike typical DUSPs, VHR lacks mitogen-activated protein kinase (MAPK)-binding domain, and shows poor activity against MAPKs. VHR often act on bisphosphorylated protein substrates, it displays a strong preference for dephosphorylating phosphotyrosine residues over phosphothreonine residues. VHR has been identified as a novel regulator of extracellular regulated kinases (ERKs). VHR is responsible for the rapid inactivation of ERK following stimulation and for its repression in quiescent cells. VHR is a negative regulator of the Erk and Jnk pathways in T cells and, therefore, may play a role in aspects of T lymphocyte physiology that depend on these kinases.

Product Categories/Family for DUSP3 recombinant protein

Phosphatases and Regulators

References

Todd J.L, et al. (1999) Extracellular regulated kinases (ERK) 1 and ERK2 are authentic substrates for the dual-specificity protein-tyrosine phosphatase VHR. A novel role in down-regulating the ERK pathway. J. Biol. Chem. 274: 13271-80.Alonso A, et al. (2001) Inhibitory role for dual specificity phosphatase VHR in T cell antigen receptor and CD28-induced Erk and Jnk activation. J Biol Chem. 276(7): 4766-71.Schumacher MA, et al. (2002) Structural basis for the recognition of a bisphosphorylated MAP kinase peptide by human VHR protein Phosphatase. Biochemistry. 41(9): 3009-17.Patterson KI, et al. (2009) Dual-specificity phosphatases: critical regulators with diverse cellular targets. Biochem J. 2009 Mar 15;418(3): 475-89.

NCBI and Uniprot Product Information

• NCBI GI #: 4758208
• NCBI GeneID: 1845
• NCBI Accession #: NP_004081.1
• NCBI GenBank Nucleotide #: NM_004090.3
• UniProt Accession #: P51452; Q5U0J1; Q8IYJ9; D3DX45
• Molecular Weight: 16,163 Da
• NCBI Official Full Name: dual specificity protein phosphatase 3
• NCBI Official Synonym Full Names: dual specificity phosphatase 3
• NCBI Official Symbol: DUSP3
• NCBI Official Synonym Symbols: VHR
• NCBI Protein Information: dual specificity protein phosphatase 3; dual specificity protein phosphatase VHR; serine/threonine specific protein phosphatase; vaccinia H1-related phosphatase; vaccinia virus phosphatase VH1-related
• UniProt Protein Name: Dual specificity protein phosphatase 3
• Protein Family: Dual specificity protein phosphatase
• UniProt Gene Name: DUSP3
• UniProt Synonym Gene Names: VHR; VHR
• UniProt Entry Name: DUS3_HUMAN

NCBI Description

The protein encoded by this gene is a member of the dual specificity protein phosphatase subfamily. These phosphatases inactivate their target kinases by dephosphorylating both the phosphoserine/threonine and phosphotyrosine residues. They negatively regulate members of the mitogen-activated protein (MAP) kinase superfamily (MAPK/ERK, SAPK/JNK, p38), which are associated with cellular proliferation and differentiation. Different members of the family of dual specificity phosphatases show distinct substrate specificities for various MAP kinases, different tissue distribution and subcellular localization, and different modes of inducibility of their expression by extracellular stimuli. This gene maps in a region that contains the BRCA1 locus which confers susceptibility to breast and ovarian cancer. Although DUSP3 is expressed in both breast and ovarian tissues, mutation screening in breast cancer pedigrees and in sporadic tumors was negative, leading to the conclusion that this gene is not BRCA1. [provided by RefSeq, Jul 2008]

Uniprot Description

DUSP3: a non-receptor, dual-specificity phosphoprotein phosphatase (DUSP). Different members of the DUSP family show distinct substrate specificities for MAPKs, different tissue distribution and subcellular localization, and different modes of inducibility of their expression by extracellular stimuli. DUSP3 inactivates the mitogen-activated kinases Erk2 and Jnk and is phosphorylated by ZAP-70. Phosphorylation by ZAP-70 is required for DUSP3 to inhibit the Erk2-Elk-1 pathway.

Protein type: EC 3.1.3.48; Motility/polarity/chemotaxis; Protein phosphatase, dual-specificity; EC 3.1.3.16

Chromosomal Location of Human Ortholog: 17q21

Cellular Component: nucleoplasm; cytoplasm; immunological synapse; cytosol; nucleus

Molecular Function: MAP kinase phosphatase activity; protein tyrosine/serine/threonine phosphatase activity; protein tyrosine phosphatase activity

Biological Process: negative regulation of JNK cascade; nerve growth factor receptor signaling pathway; in utero embryonic development; negative regulation of MAPKKK cascade; MyD88-independent toll-like receptor signaling pathway; stress-activated MAPK cascade; negative regulation of T cell receptor signaling pathway; toll-like receptor 3 signaling pathway; positive regulation of mitotic cell cycle; toll-like receptor 2 signaling pathway; toll-like receptor 10 signaling pathway; MyD88-dependent toll-like receptor signaling pathway; toll-like receptor 5 signaling pathway; toll-like receptor signaling pathway; innate immune response; toll-like receptor 9 signaling pathway; toll-like receptor 4 signaling pathway; negative regulation of T cell activation; inactivation of MAPK activity