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SRP6323

Sigma-Aldrich

Pentraxin 3 human

recombinant, expressed in E. coli, ≥90% (SDS-PAGE)

Synonym(s):

PTX3, TNFAIP5, TSG-14

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.32

biological source

human

recombinant

expressed in E. coli

Assay

≥90% (SDS-PAGE)

form

liquid

mol wt

44.4 kDa (401 aa, 18-381 aa + His Tag)

packaging

pkg of 100 μg

concentration

1 mg/mL

impurities

<1 EU/μg endotoxin (LAL test)

UniProt accession no.

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... PTX3(5806)

General description

Pentraxin 3 (PTX3) or tumor necrosis factor (TNF)-stimulated gene is the prototypic member of the long pentraxin family sharing the C-terminal domain with short pentraxins and containing a unique N-terminal domain. The gene encoding this protein is localized on human chromosome 3q25.32 and consists of 3 exons. Recombinant human Pentraxin 3 protein, fused to His-tag at N-terminus, was expressed in E.coli and purified by using conventional chromatography.

Biochem/physiol Actions

Pentraxin 3 (PTX3) is an acute phase protein produced and released at inflammatory sites by diverse cell types including monocytes/macrophages, endothelial cells, vascular smooth muscle cells, fibroblasts, and adipocytes. It plays a role in the regulation of innate resistance to pathogens, inflammatory reactions, possibly clearance of self-components and female fertility. PTX3 particularly functions as a soluble pathogen recognition receptor and confers resistance against pathogens. Studies indicate that the protein removes apoptotic cells during immune responses. It associates with complement factor H, which is a complement regulator protein.

Physical form

1 mg/mL in 20 mM Tris-HCl buffer (pH 8.0) containing 10% glycerol, and 1 mM DTT.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Simone Bastrup-Birk et al.
PloS one, 8(9), e73119-e73119 (2013-09-17)
The long pentraxin-3 (PTX3) is a key component of the humoral arm of the innate immune system. PTX3 is produced locally in response to pro-inflammatory stimuli. To investigate PTX3 levels and its use as a biomarker in patients with systemic
Pentraxin-3 and the right ventricle: the Multi-Ethnic Study of Atherosclerosis?Right Ventricle Study
Peter Leary
Pulmonary Circulation, 4.2 (2014)
Tunicamycin-induced Endoplasmic Reticulum Stress Upregulates the Expression of Pentraxin 3 in Human Retinal Pigment Epithelial Cells
Narae Hwang
Korean Journal of Ophthalmology : KJO, 30(6), 468-478 (2016)
Bongkun Choi et al.
Oncotarget, 5(2), 481-492 (2014-01-25)
Pentraxin 3 (PTX3), a modulator of tumor-associated inflammation, is known to be positively correlated with tumor grade and severity of malignancies, but its exact role remains unclear. This study found that PTX3 expression was up-regulated in distant bone metastases of
Anne Braunschweig et al.
PloS one, 6(8), e23991-e23991 (2011-09-15)
The long pentraxin 3 (PTX3) is a soluble recognition molecule with multiple functions including innate immune defense against certain microbes and the clearance of apoptotic cells. PTX3 interacts with recognition molecules of the classical and lectin complement pathways and thus

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