LAIR1 recombinant protein

Human LAIR1 Protein (His Tag)

Cat. Num. AAA2545346

• Gene Names: LAIR1; CD305; LAIR-1
• Purity: > 95 % as determined by SDS-PAGE.
• Synonyms: LAIR1; Human LAIR1 Protein (His Tag); CD305; LAIR1 recombinant protein

• Host: Human Cells
• Purity/Purification: > 95 % as determined by SDS-PAGE.
• Form/Format: Lyophilized from sterile PBS, pH 7.4
• Sequence Length: 209

• Application Notes: The recombinant human LAIR1 consists of 155 amino acids and predicts a molecular mass of 17.2 kDa.
• Predicted N Terminal: Gln 22
• Endotoxin: <1.0 EU per mug protein as determined by the LAL method.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

SDS-PAGE

Related Product Information for LAIR1 recombinant protein

Background: Leukocyte associated Ig-like receptor-1 (LAIR1) is a surface molecule expressed on human mononuclear leukocytes that functions as an inhibitory receptor on human NK cells. In addition to NK cells, LAIR1 is expressed on T cells, B cells, macrophages, and dendritic cells. It is predicted to mediate inhibitory functions based on the presence of immunoreceptor tyrosine-based inhibitory motifs (ITIMs) in its cytoplasmic domain. Cross-linking of LAIR1 on human T cell clones results in inhibition of cytotoxicity only in T cell clones that lack CD28 and are able to spontaneously lyse certain targets in vitro. Moreover, the cytolytic activity of freshly isolated T cells, which is thought to be mainly due to "effector" T cells, can be inhibited by anti-LAIR1 mAb. Thus, LAIR1 functions as an inhibitory receptor not only on NK cells, but also on human T cells. This indicates that LAIR1 provides a mechanism of regulation of effector T cells and may play a role in the inhibition of unwanted bystander responses mediated by Ag-specific T cells. 

Description: A DNA sequence encoding the human LAIR1 (AAF71275.2) (Met1-Tyr165) was expressed with a polyhistidine tag at the C-terminus.

NCBI and Uniprot Product Information

• NCBI GI #: 11090866
• NCBI GeneID: 3903
• Molecular Weight: 23,049 Da
• NCBI Official Full Name: leukocyte-associated Ig-like receptor 1D isoform
• NCBI Official Synonym Full Names: leukocyte associated immunoglobulin like receptor 1
• NCBI Official Symbol: LAIR1
• NCBI Official Synonym Symbols: CD305; LAIR-1
• NCBI Protein Information: leukocyte-associated immunoglobulin-like receptor 1
• UniProt Protein Name: Leukocyte-associated immunoglobulin-like receptor 1
• Protein Family: Leukocyte-associated immunoglobulin-like receptor
• UniProt Gene Name: LAIR1
• UniProt Synonym Gene Names: CD305; LAIR-1; hLAIR1

NCBI Description

The protein encoded by this gene is an inhibitory receptor found on peripheral mononuclear cells, including natural killer cells, T cells, and B cells. Inhibitory receptors regulate the immune response to prevent lysis of cells recognized as self. The gene is a member of both the immunoglobulin superfamily and the leukocyte-associated inhibitory receptor family. The gene maps to a region of 19q13.4 called the leukocyte receptor cluster, which contains at least 29 genes encoding leukocyte-expressed receptors of the immunoglobulin superfamily. The encoded protein has been identified as an anchor for tyrosine phosphatase SHP-1, and may induce cell death in myeloid leukemias. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

Uniprot Description

LAIR-1: an inhibitory receptor found on peripheral mononuclear cells, including NK cells, T cells, and B cells. Inhibitory receptors regulate the immune response to prevent lysis of cells recognized as self. The gene is a member of both the immunoglobulin superfamily and the leukocyte-associated inhibitory receptor family. The gene maps to a region called the leukocyte receptor cluster, which contains at least 25 genes encoding leukocyte-expressed receptors of the immunoglobulin superfamily.

Protein type: Membrane protein, integral; Receptor, misc.

Chromosomal Location of Human Ortholog: 19q13.42

Cellular Component: plasma membrane

Molecular Function: protein binding

Biological Process: regulation of immune response