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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), cell culture tested

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

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Properties

Related Categories Cell Biology, Cell Culture, Cell Signaling and Neuroscience, Cytokines and Growth Factors, Cytokines, Growth Factors and Hormones,
biological source   human
recombinant   expressed in (BTI-Tn-5B1-4) High-5 Insect Cells
assay   ≥98% (HPLC)
  ≥98% (SDS-PAGE)
form   lyophilized
mol wt   25.8 kDa
packaging   pkg of 20 μg
impurities   <0.1 EU/μg endotoxin, tested
color   white to off-white
suitability   cell culture tested
UniProt accession no.   P22692
shipped in   wet ice
storage temp.   −20°C
Gene Information   human ... IGFBP4(3487)

Description

General description

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.

Application

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).

Biochem/physiol Actions

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.

Sequence

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

Physical form

Lyophilized from 1x PBS, pH 7.2.

Reconstitution

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.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis (COA)

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Pipette Controller from Brand

Cell Culture Guide
Protocols & Articles

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