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SRP3064

Sigma-Aldrich

IGF-Binding Protein 4 human

recombinant, expressed in (BTI-Tn-5B1-4) High-5 Insect Cells, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

同義詞:

HT29-IGF-BP, IBP-4, colon cancer cell growth inhibitor

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About This Item

分類程式碼代碼:
51111800
NACRES:
NA.32

生物源

human

重組細胞

expressed in (BTI-Tn-5B1-4) High-5 Insect Cells

化驗

≥98% (HPLC)
≥98% (SDS-PAGE)

形狀

lyophilized

分子量

25.8 kDa

包裝

pkg of 20 μg

技術

cell culture | mammalian: suitable

雜質

<0.1 EU/μg endotoxin, tested

顏色

white to off-white

UniProt登錄號

運輸包裝

wet ice

儲存溫度

−20°C

基因資訊

human ... IGFBP4(3487)

一般說明

The gene IGFBP4 (insulin-like growth factor-binding protein 4) is mapped to human chromosome 17q21. It belongs to the IGFBP family of proteins. The protein has a IGF (insulin-like growth factor)-binding site and a thyroglobulin type-1 domain. IGFBPs are mainly required to regulate IGFs activities. IGFBP4 can be cleaved by PAPP-A (pregnancy-associated plasma protein-A) in IGF-dependent mechanism.
Recombinant human IGF-BP4 is a 25.7kDa protein consisting of 237 amino acid residues including the IGF-BP domain and thyroglobulin type-I domain.

應用

IGF-Binding Protein 4 human has been used to check the dependency of FSH (follicle-stimulating hormone) action in human Cumulus granulosa cells on IGF-2 (insulin-like growth factor 2).

生化/生理作用

IGFBP4 (insulin-like growth factor-binding protein 4) suppresses cell proliferation and DNA synthesis and induces cell death. IGFBP4 participates in adipose tissue expandability and interacts with IGF1 (insulin-like growth factor 1). Interaction with IGF1 disrupts mitogenic signaling. IGFBP4 is suggested as a serum biomarker of Lupus Nephritis and is associated with the chronicity of renal pathology in patients. IGFBP4 is also linked with cardiovascular death in type 1 diabetes patients in the absence/presence of nephropathy. It is also linked with the progression of tumors.

序列

DEAIHCPPCS EEKLARCRPP VGCEELVREP GCGCCATCAL GLGMPCGVYT PRCGSGLRCY PPRGVEKPLH TLMHGQGVCM ELAEIEAIQE SLQPSDKDEG DHPNNSFSPC SAHDRRCLQK HFAKIRDRST SGGKMKVNGA PREDARPVPQ GSCQSELHRA LERLAASQSR THEDLYIIPI PNCDRNGNFH PKQCHPALDG QRGKCWCVDR KTGVKLPGGL EPKGELDCHQ LADSFRE

外觀

Lyophilized from 1x PBS, pH 7.2.

重構

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable


分析證明 (COA)

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P M Schiltz et al.
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research, 8(4), 391-396 (1993-04-01)
This laboratory has purified a unique insulin-like growth factor binding protein (IGFBP-4) that was previously demonstrated to be inhibitory to bone cell proliferation. In this study, the hypothesis that IGFBP-4 is inhibitory to insulin-like growth factor (IGF) actions on cartilage
FSH Regulates IGF-2 Expression in Human Granulosa Cells in an AKT-Dependent Manner.
Baumgarten SC, et al.
The Journal of Clinical Endocrinology and Metabolism, 100, E1046-E1046 (2015)
Gene expression profiles in asbestos-exposed epithelial and mesothelial lung cell lines.
Nymark P, et al.
BMC Genomics, 8, 62-62 (2007)
A J Ryan et al.
British journal of cancer, 101(2), 278-286 (2009-06-19)
Insulin-like growth factor 1 (IGF1) promotes breast cancer and disease progression. Bioavailability of IGF1 is modulated by IGF-binding proteins (IGFBPs). IGFBP4 inhibits IGF1 activity but cleavage by pregnancy-associated plasma protein-A (PAPP-A) protease releases active IGF1. Expression of IGF pathway components
Control of adipose tissue expandability in response to high fat diet by the insulin-like growth factor-binding protein-4.
Gealekman O, et al.
The Journal of Biological Chemistry, 289, 18327-18327 (2014)

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