ENA 78 Human

Epithelial Neutrophil-Activating Protein 78 Human Recombinant (CXCL5)
Cat. No.
BT10749
Source
Escherichia Coli.
Synonyms
Small inducible cytokine B5, CXCL5, Epithelial-derived neutrophil-activating protein 78, Neutrophil-activating peptide ENA-78, ENA-78(1-78), chemokine (C-X-C motif) ligand 5, SCYB5.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 95.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
Usage
Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Epithelial Neutrophil-Activating Protein 78 Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 74 amino acids and having a molecular mass of 8020 Dalton.
The CXCL5 is purified by proprietary chromatographic techniques.

Product Specs

Introduction

Chemokine (C-X-C motif) ligand 5 (CXCL5), alternatively known as epithelial-derived neutrophil-activating peptide 78 (ENA-78), is a small cytokine belonging to the CXC chemokine family. Production of CXCL5 is triggered by stimulation of cells with inflammatory cytokines such as interleukin-1 or tumor necrosis factor-alpha. Eosinophils have also been observed to express CXCL5, and this expression can be inhibited by type II IFN. This chemokine demonstrates chemotactic activity towards neutrophils and exhibits angiogenic properties. These effects are mediated through its interaction with the cell surface chemokine receptor CXCR2. The gene encoding CXCL5 consists of four exons and is situated on human chromosome 4, clustered among several other CXC chemokine genes. CXCL5 has been implicated in the process of connective tissue remodeling.

Description
Recombinant Human Epithelial Neutrophil-Activating Protein 78, produced in E. coli, is a single, non-glycosylated polypeptide chain comprising 74 amino acids. It has a molecular weight of 8020 Daltons. The purification of CXCL5 is achieved using proprietary chromatographic techniques.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation
The CXCL5 was lyophilized from a concentrated (1mg/ml) solution using water without any additives.
Solubility
For reconstitution of the lyophilized ENA-78, it is recommended to use sterile 18 MΩ-cm H2O at a concentration of at least 100 µg/ml. This solution can be further diluted into other aqueous solutions as needed.
Stability
Lyophilized ENA78, while stable at room temperature for up to 3 weeks, should be stored desiccated at a temperature below -18°C. After reconstitution, CXCL5 should be stored at 4°C for a period of 2-7 days. For long-term storage, it is recommended to freeze it below -18°C. The addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage. It's important to avoid repeated freeze-thaw cycles.
Purity
Purity exceeds 95.0% as determined by: (a) Analysis using RP-HPLC. (b) Analysis using SDS-PAGE.
Biological Activity
The biological activity was assessed by evaluating the dose-dependent mobilization of intracellular calcium (calcium flux) in human neutrophils. Significant calcium mobilization was observed at a concentration of 100 ng/mL (corresponding to a Specific Activity of 10,000 IU/mg) of recombinant human ENA-78.
Synonyms
Small inducible cytokine B5, CXCL5, Epithelial-derived neutrophil-activating protein 78, Neutrophil-activating peptide ENA-78, ENA-78(1-78), chemokine (C-X-C motif) ligand 5, SCYB5.
Source
Escherichia Coli.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids was determined and was found to be, Ala- Ala -Val-Leu-Arg.

Product Science Overview

Structure and Function

CXCL5 is a proinflammatory chemokine with a molecular weight of approximately 8 kDa . It is characterized by the presence of a Glu-Leu-Arg (ELR) motif, which confers angiogenic properties . This motif distinguishes it from other CXC chemokines that are angiostatic .

The protein is produced in response to stimulation by inflammatory cytokines such as interleukin-1 (IL-1) and tumor necrosis factor-alpha (TNF-α) . It plays a crucial role in the chemotaxis of neutrophils, which are essential for the body’s immune response . CXCL5 interacts with the CXCR2 receptor on the surface of neutrophils to elicit its effects .

Expression and Regulation

CXCL5 is expressed in various tissues, including monocytes, epithelial cells, and eosinophils . Its expression can be inhibited by type II interferon (IFN-γ) . The gene for CXCL5 consists of four exons and is located among several other CXC chemokine genes on chromosome 4 .

Biological and Clinical Significance

CXCL5 has been implicated in several biological processes, including:

  • Inflammatory response: It is involved in the body’s response to inflammation by attracting neutrophils to the site of infection or injury .
  • Angiogenesis: The ELR motif of CXCL5 promotes the formation of new blood vessels .
  • Connective tissue remodeling: CXCL5 plays a role in the remodeling of connective tissues .
  • Neutrophil homeostasis: It helps regulate the balance and function of neutrophils in the body .

Clinically, CXCL5 has been studied for its role in reducing sensitivity to sunburn pain and its potential as a target for understanding pain in other inflammatory conditions such as arthritis and cystitis .

Recombinant CXCL5

Recombinant human CXCL5 is produced using E. coli expression systems . It is available in both carrier-free and carrier-containing formulations, with the carrier protein typically being Bovine Serum Albumin (BSA) . The recombinant protein is used in various research applications, including studies on chemotaxis and inflammation .

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