Human CD5L Alexa Fluor® 350-conjugated Antibody

Catalog #: AF2797U Datasheet / COA / SDS

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AF2797U-100UG

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Human CD5L Alexa Fluor® 350-conjugated Antibody Summary

Species Reactivity

Human

Specificity

Detects human CD5L in direct ELISAs and Western blots. In these formats, less than 5% cross‑reactivity with recombinant mouse CD5L and less than 1% cross-reactivity with recombinant human CD5 is observed.

Source

Polyclonal Goat IgG

Purification

Antigen Affinity-purified

Immunogen

Mouse myeloma cell line NS0-derived recombinant human CD5L
Ser20-Gly347
Accession # O43866

Formulation

Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Label

Alexa Fluor 350 (Excitation= 346 nm, Emission= 442 nm)

Applications

Recommended Concentration

Sample

Western Blot

Optimal dilution of this antibody should be experimentally determined.

Immunohistochemistry

Optimal dilution of this antibody should be experimentally determined.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied

Background: CD5L

CD5L (CD5 antigen-like), also known as Sp alpha and AIM, is a 50 kDa secreted glycoprotein that belongs to the SRCR (scavenger receptor cysteine rich) group B family of proteins. Group B proteins are distinguished by SRCR domains that are encoded by a single exon (1 - 3). The human CD5L cDNA encodes a 347 amino acid (aa) precursor that includes a 19 aa signal sequence and three SRCR domains (4, 5). Among group B proteins, CD5L is most closely related to CD5 and CD6, with which it shares 18% and 31% aa sequence identity, respectively. CD5L is up-regulated in macrophages at inflammatory sites. It sustains inflammatory reactions by both increasing the phagocytic capacity of macrophages and impeding the apoptosis of local macrophages, NK cells, and T cells (6, 7). Agonists of the LXR and RXR nuclear hormone receptors induce CD5L upregulation in macrophages and reduce macrophage apoptosis (8, 9). Oxidized LDL (which acts through LXR/RXR) is taken up by macrophages, promoting their development into foam cells. The increased level of CD5L protects foam cells from apoptosis but permits more rapid cellular accumulation and atherosclerotic plaque formation (9). In activated B cells, however, the combination of CD5L and TGF-beta inhibits proliferation. The binding of CD5L to splenic B cells is increased following TGF-beta exposure, suggesting that TGF-beta increases the expression or availability of an unidentified CD5L receptor (5, 10). CD5L also functions as a pattern recognition molecule by binding both lipoteichoic acid on Gram positive and lipopolysaccharide on Gram negative bacteria (11). In the thymic cortex, CD5L protects cortical CD4⁺CD8⁺ thymocytes from apoptosis (12). CD5L circulates in the serum in complex with IgM (13).

Long Name

CD5 Antigen-like

Entrez Gene IDs

922 (Human); 11801 (Mouse)

Alternate Names

AIM; API6; apoptosis inhibitor 6; CD5 antigen-like (scavenger receptor cysteine rich family); CD5 antigen-like; CD5 molecule-like; CD5L; CT-2; IgM-associated peptide; PRO229; Spalpha; SP-alpha