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  4. IRAK4 Protein, Human (sf9, His)

IRAK4 Protein, Human (sf9, His)

Cat. No.: HY-P73255
COA Handling Instructions

IRAK4 Protein, a serine/threonine-protein kinase, is pivotal in initiating innate immune responses via Toll-like receptor (TLR) and IL-1R signaling pathways. Upon TLR activation, it rapidly forms the Myddosome with IRAK2. IRAK4 phosphorylates IRAK1, promoting its autophosphorylation, and phosphorylates Pellino proteins to facilitate IRAK1 polyubiquitination. This leads to NF-kappa-B activation and regulates immune responses during microbial infections. Additionally, it phosphorylates TIRAP, influencing its ubiquitination and degradation. IRAK4 Protein, Human (sf9, His) is the recombinant human-derived IRAK4 protein, expressed by Sf9 insect cells , with N-10*His labeled tag. The total length of IRAK4 Protein, Human (sf9, His) is 460 a.a., with molecular weight of ~48 kDa.

For research use only. We do not sell to patients.

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Description

IRAK4 Protein, a serine/threonine-protein kinase, is pivotal in initiating innate immune responses via Toll-like receptor (TLR) and IL-1R signaling pathways. Upon TLR activation, it rapidly forms the Myddosome with IRAK2. IRAK4 phosphorylates IRAK1, promoting its autophosphorylation, and phosphorylates Pellino proteins to facilitate IRAK1 polyubiquitination. This leads to NF-kappa-B activation and regulates immune responses during microbial infections. Additionally, it phosphorylates TIRAP, influencing its ubiquitination and degradation. IRAK4 Protein, Human (sf9, His) is the recombinant human-derived IRAK4 protein, expressed by Sf9 insect cells , with N-10*His labeled tag. The total length of IRAK4 Protein, Human (sf9, His) is 460 a.a., with molecular weight of ~48 kDa.

Background

The IRAK4 protein functions as a pivotal serine/threonine-protein kinase, playing a crucial role in initiating the innate immune response against foreign pathogens. It is actively involved in Toll-like receptor (TLR) and IL-1R signaling pathways, and upon TLR activation, it is rapidly recruited by MYD88 to form the Myddosome in conjunction with IRAK2. Initially, IRAK1 is phosphorylated, stimulating its kinase activity and inducing intensive autophosphorylation. Additionally, IRAK4 phosphorylates E3 ubiquitin ligases Pellino proteins (PELI1, PELI2, and PELI3), facilitating pellino-mediated polyubiquitination of IRAK1. Consequently, the polyubiquitinated IRAK1 binds with the ubiquitin-binding domain of IKBKG/NEMO, assembling the IRAK1-MAP3K7/TAK1-TRAF6 complex and the NEMO-IKKA-IKKB complex. This, in turn, activates IKKs (CHUK/IKKA and IKBKB/IKKB), leading to nuclear translocation and activation of NF-kappa-B. Alternatively, TIRAP is phosphorylated by IRAK4, promoting its ubiquitination and subsequent degradation. Moreover, IRAK4 phosphorylates NCF1, which regulates NADPH oxidase activation following LPS stimulation, suggesting a similar mechanism during microbial infections.

Biological Activity

The specific activity was determined to be >169 nmol/min/mg using MBP as substrate.

Species

Human

Source

Sf9 insect cells

Tag

N-10*His

Accession

Q9NWZ3-1 (M1-S460)

Gene ID
Molecular Construction
N-term
10*His
IRAK4 (M1-S460)
Accession # Q9NWZ3-1
C-term
Synonyms
Interleukin-1 receptor-associated kinase 4; IPD1; IRAK4; NY-REN-64; REN64
AA Sequence

MNKPITPSTYVRCLNVGLIRKLSDFIDPQEGWKKLAVAIKKPSGDDRYNQFHIRRFEALLQTGKSPTSELLFDWGTTNCTVGDLVDLLIQNEFFAPASLLLPDAVPKTANTLPSKEAITVQQKQMPFCDKDRTLMTPVQNLEQSYMPPDSSSPENKSLEVSDTRFHSFSFYELKNVTNNFDERPISVGGNKMGEGGFGVVYKGYVNNTTVAVKKLAAMVDITTEELKQQFDQEIKVMAKCQHENLVELLGFSSDGDDLCLVYVYMPNGSLLDRLSCLDGTPPLSWHMRCKIAQGAANGINFLHENHHIHRDIKSANILLDEAFTAKISDFGLARASEKFAQTVMTSRIVGTTAYMAPEALRGEITPKSDIYSFGVVLLEIITGLPAVDEHREPQLLLDIKEEIEDEEKTIEDYIDKKMNDADSTSVEAMYSVASQCLHEKKNKRPDIKKVQQLLQEMTAS

Molecular Weight

Approximately 48 kDa

Purity

Greater than 90% as determined by reducing SDS-PAGE

Appearance

Solution.

Formulation

Supplied as a 0.2 μm filtered solution of 20 mM Tris, 500 mM NaCl, 0.5 mM PMSF, pH 7.4

Endotoxin Level

<1 EU/μg, determined by LAL method.

Storage & Stability

Stored at -80°C for 1 year. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping

Shipping with dry ice.

Documentation

IRAK4 Protein, Human (sf9, His) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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IRAK4 Protein, Human (sf9, His)
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HY-P73255
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