KIR2DL5A Human

Killer Cell Immunoglobulin-Like Receptor, 2 Domains Long Cytoplasmic Tail 5A Human Recombinant
Cat. No.
BT26408
Source

Sf9, Baculovirus cells.

Synonyms

Killer Cell Immunoglobulin Like Receptor, Two Ig Domains And Long Cytoplasmic Tail 5A, Killer Cell Immunoglobulin-Like Receptor, Two Domains, Long Cytoplasmic Tail 5A, KIR2DL5, CD158F, Killer Cell Immunoglobulin-Like Receptor, Two Domains, Long Cytoplasmic Tail, 5, Killer Cell Immunoglobulin-Like Receptor KIR2DL5A, Killer Cell Immunoglobulin-Like Receptor 2DL5A, CD158f1 Antigen, KIR2DL5.1, KIR2DL5.3, CD158F1, KIR2DL5A.

Appearance
Sterile filtered colorless solution.
Purity

Greater than 90.0% as determined by SDS-PAGE.

Usage
THE BioTek'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

KIR2DL5A Human Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 459 amino acids (22-238a.a.) and having a molecular mass of 50.5kDa (Molecular size on SDS-PAGE will appear at approximately 50-70kDa). KIR2DL5A is expressed with a 239 amino acids hIgG-His tag at C-Terminus and purified by proprietary chromatographic techniques.

Product Specs

Introduction
Killer cell immunoglobulin-like receptor 2DL5A (KIR2DL5A) is a type I transmembrane glycoprotein and a member of the killer cell Ig-like receptor (KIR) family. KIR2DL5A is found on the cell surface as a monomer, and upon tyrosine phosphorylation, it recruits the Src homology region 2-containing protein tyrosine phosphatase-2. This makes KIR2DL5A an inhibitory receptor with unique genetic, structural, and functional characteristics within the KIR family, indicating a specialized role in innate immunity.
Description
Recombinant human KIR2DL5A, produced in Sf9 Baculovirus cells, is a single, glycosylated polypeptide chain. It comprises 459 amino acids (22-238a.a.), has a molecular mass of 50.5 kDa, and appears at approximately 50-70 kDa on SDS-PAGE. KIR2DL5A is expressed with a 239 amino acid hIgG-His tag at the C-terminus and purified using proprietary chromatographic techniques.
Physical Appearance
Sterile, colorless solution.
Formulation
KIR2DL5A protein solution (0.25 mg/ml) in Phosphate Buffered Saline (pH 7.4) with 10% glycerol.
Stability
For short-term storage (2-4 weeks), keep at 4°C. For longer storage, freeze at -20°C. Adding a carrier protein (0.1% HSA or BSA) is recommended for long-term storage. Avoid repeated freeze-thaw cycles.
Purity
Greater than 90.0% as determined by SDS-PAGE.
Synonyms

Killer Cell Immunoglobulin Like Receptor, Two Ig Domains And Long Cytoplasmic Tail 5A, Killer Cell Immunoglobulin-Like Receptor, Two Domains, Long Cytoplasmic Tail 5A, KIR2DL5, CD158F, Killer Cell Immunoglobulin-Like Receptor, Two Domains, Long Cytoplasmic Tail, 5, Killer Cell Immunoglobulin-Like Receptor KIR2DL5A, Killer Cell Immunoglobulin-Like Receptor 2DL5A, CD158f1 Antigen, KIR2DL5.1, KIR2DL5.3, CD158F1, KIR2DL5A.

Source

Sf9, Baculovirus cells.

Amino Acid Sequence

ADPHEGGQDK PLLSAWPSAV VPRGGHVTLL CRSRLGFTIF SLYKEDGVPV PELYNKIFWK SILMGPVTPA HAGTYRCRGS HPRSPIEWSA PSNPLVIVVT GLFGKPSLSA QPGPTVRTGE NVTLSCSSRS SFDMYHLSRE GRAHEPRLPA VPSVNGTFQA DFPLGPATHG GTYTCFGSLH DSPYEWSDPS DPLLVSVTGN SSSSSSSPTE PSSKTGIRRH VEPKSCDKTH TCPPCPAPEL LGGPSVFLFP PKPKDTLMIS RTPEVTCVVV DVSHEDPEVK FNWYVDGVEV HNAKTKPREE QYNSTYRVVS VLTVLHQDWL NGKEYKCKVS NKALPAPIEK TISKAKGQPR EPQVYTLPPS RDELTKNQVS LTCLVKGFYP SDIAVEWESN GQPENNYKTT PPVLDSDGSF FLYSKLTVDK SRWQQGNVFS CSVMHEALHN HYTQKSLSLS PGKHHHHHH.

Product Science Overview

KIR2DL5A Overview

KIR2DL5A (Killer Cell Immunoglobulin-Like Receptor, 2 Domains Long Cytoplasmic Tail 5A) is one of the members of the KIR family. It is encoded by the KIR2DL5A gene, which is located on chromosome 19p13.3 . The gene spans approximately 9.3 kb and contains 8 exons .

Structure and Function

The KIR2DL5A protein is a type I transmembrane protein with a long cytoplasmic tail containing two immunoreceptor tyrosine-based inhibitory motifs (ITIMs) . These motifs are crucial for the inhibitory function of the receptor. The extracellular region of KIR2DL5A contains two immunoglobulin-like domains, which are responsible for binding to HLA class I molecules .

KIR2DL5A functions as an inhibitory receptor, meaning that upon binding to its ligand, it transmits inhibitory signals to the NK cell, preventing it from killing the target cell . This mechanism is essential for maintaining self-tolerance and preventing autoimmunity.

Genetic Variation and Expression

The KIR gene family is highly polymorphic, with significant variation in gene content and alleles among individuals . KIR2DL5A and its closely related gene, KIR2DL5B, are present in over half of the population . However, not all alleles of these genes are expressed, and alternative splicing can result in different isoforms of the protein .

KIR2DL5A is expressed in a subset of NK cells and some T cells, but its expression is not as ubiquitous as other KIRs . The promoter region of KIR2DL5A contains multiple binding sites for transcription factors that are expressed in hematopoietic cell lineages .

Clinical Relevance

The study of KIR2DL5A and other KIRs is important for understanding the regulation of NK cell activity and its implications in various diseases. Variations in KIR genes have been associated with susceptibility to infections, autoimmune diseases, and cancer . Additionally, KIR2DL5A’s role in transplantation immunology is of particular interest, as mismatches in KIR-HLA interactions can affect transplant outcomes .

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