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  4. LAIR-1 LAIR-1/CD305
  5. LAIR1 Protein, Mouse (HEK293, Fc)

LAIR1 Protein, Mouse (HEK293, Fc)

Cat. No.: HY-P74783
Handling Instructions

The LAIR1 protein functions as an inhibitory receptor, negatively regulating NK cells, B-cells, and T-cells. Activated by tyrosine phosphorylation, LAIR1 recruits PTPN6 and PTPN11, exerting downstream inhibitory effects. It diminishes intracellular calcium increase triggered by B-cell receptor ligation and independently modulates cytokine production in CD4+ T-cells, down-regulating IL2 and IFNG while inducing TGF-beta secretion. LAIR1 also regulates IgG and IgE production, inhibits proliferation, induces apoptosis in myeloid leukemia cells, prevents NF-kappa-B p65 subunit translocation, and inhibits I-kappa-B alpha phosphorylation. LAIR1 associates with SH2 domains of PTPN6 and PTPN11 and binds with high affinity to extracellular matrix collagens, signifying a functionally significant interaction. LAIR1 Protein, Mouse (HEK293, Fc) is the recombinant mouse-derived LAIR1 protein, expressed by HEK293 , with C-hFc labeled tag. The total length of LAIR1 Protein, Mouse (HEK293, Fc) is 112 a.a., with molecular weight of 49-53 kDa.

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Description

The LAIR1 protein functions as an inhibitory receptor, negatively regulating NK cells, B-cells, and T-cells. Activated by tyrosine phosphorylation, LAIR1 recruits PTPN6 and PTPN11, exerting downstream inhibitory effects. It diminishes intracellular calcium increase triggered by B-cell receptor ligation and independently modulates cytokine production in CD4+ T-cells, down-regulating IL2 and IFNG while inducing TGF-beta secretion. LAIR1 also regulates IgG and IgE production, inhibits proliferation, induces apoptosis in myeloid leukemia cells, prevents NF-kappa-B p65 subunit translocation, and inhibits I-kappa-B alpha phosphorylation. LAIR1 associates with SH2 domains of PTPN6 and PTPN11 and binds with high affinity to extracellular matrix collagens, signifying a functionally significant interaction. LAIR1 Protein, Mouse (HEK293, Fc) is the recombinant mouse-derived LAIR1 protein, expressed by HEK293 , with C-hFc labeled tag. The total length of LAIR1 Protein, Mouse (HEK293, Fc) is 112 a.a., with molecular weight of 49-53 kDa.

Background

The LAIR1 protein operates as an inhibitory receptor, constitutively exerting a negative regulatory influence on the cytolytic function of natural killer (NK) cells, B-cells, and T-cells. Upon activation through tyrosine phosphorylation, LAIR1 recruits and activates phosphatases PTPN6 and PTPN11, leading to downstream inhibitory effects. Notably, it diminishes the increase in intracellular calcium triggered by B-cell receptor ligation. Beyond its role with SH2-containing phosphatases, LAIR1 independently modulates cytokine production in CD4+ T-cells, down-regulating IL2 and IFNG while inducing the secretion of transforming growth factor beta. It further regulates IgG and IgE production in B-cells, as well as the secretion of IL8, IL10, and TNF. LAIR1's impact extends to inhibiting proliferation, inducing apoptosis in myeloid leukemia cell lines, preventing nuclear translocation of NF-kappa-B p65 subunit/RELA, and inhibiting the phosphorylation of I-kappa-B alpha/CHUK in these cells. Moreover, it hinders the differentiation of peripheral blood precursors into dendritic cells. Interaction-wise, LAIR1 associates with the SH2 domains of tyrosine-protein phosphatases PTPN6 and PTPN11 constitutively and binds with high affinity to extracellular matrix collagens, a functionally significant interaction.

Species

Mouse

Source

HEK293

Tag

C-hFc

Accession

Q8BG84-6 (Q22-S133)

Gene ID

52855  [NCBI]

Molecular Construction
N-term
LAIR1 (Q22-S133)
Accession # Q8BG84-6
hFc
C-term
Synonyms
Leukocyte-Associated Immunoglobulin-Like Receptor 1; LAIR-1; hLAIR1; CD305
Molecular Weight

49-53 kDa

Purity

Greater than 95% as determined by reducing SDS-PAGE

Endotoxin Level

<1 EU/μg, determined by LAL method.

Documentation
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

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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)
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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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LAIR1 Protein, Mouse (HEK293, Fc)
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HY-P74783
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