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Human IGFBP-4 Protein, His Tag

Insulin-like growth factor-binding protein 4 (IGFBP-4) is also known as IGF-binding protein 4, which contains an IGFBP domain and a thyroglobulin type-I domain. IGFBP-4 binds both insulin-like growth factors (IGFs) I and II and circulates in the plasma in both glycosylated and non-glycosylated forms. Binding of this protein prolongs the half-life of the IGFs and alters their interaction with cell surface receptors. IGFBP-4 is a unique protein and it consistently inhibits several cancer cells in vivo and in vitro. Its inhibitory action has been shown in vivo in prostate and colon. IGFBP-4 is secreted by all colon cancer cells.

Product Specifications

Background

Insulin-like growth factor-binding protein 4 (IGFBP-4) is also known as IGF-binding protein 4, which contains an IGFBP domain and a thyroglobulin type-I domain. IGFBP-4 binds both insulin-like growth factors (IGFs) I and II and circulates in the plasma in both glycosylated and non-glycosylated forms. Binding of this protein prolongs the half-life of the IGFs and alters their interaction with cell surface receptors. IGFBP-4 is a unique protein and it consistently inhibits several cancer cells in vivo and in vitro. Its inhibitory action has been shown in vivo in prostate and colon. IGFBP-4 is secreted by all colon cancer cells.

Specifications

This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 27.9 kDa. The protein migrates as 33-37 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Accession Number

P22692-1

Expression Region

Asp 22 - Glu 258

Host

HEK293

Target

IGFBP-4

Conjugation

Unconjugated

Tag

C-10xHis

Source

Human

Stability

-20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Endotoxin

1.0 EU per μg

Purity

95%

Bioactivity

Immobilized Human IGFBP-4, His Tag (Cat. No. IG4-H52E4) at 2 μg/mL (100 μL/well) can bind Human IGF-I, Fc Tag with a linear range of 1-16 ng/mL (QC tested).

Format

Powder

Buffer

PBS, pH7.4

Additives

Trehalose

Molecular Weight

27.9 kDa

Additionnal Information

Please see 'Shipping-and-Payments' sheet. Website: https://www.acrobiosystems.com/support/shipping-and-payments

Shipping Conditions

RT

Storage Conditions

-20°C

Package Size

50ug*1

Host or Source

HEK293

Species

Human

Protein ID

P22692-1

Preservative

Trehalose

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