CXCL12/SDF-1 beta Antibody [Alexa Fluor® 594]

• Reactivity: Hu
• Applications: WB, B/N
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Alexa Fluor 594

CXCL12/SDF-1 beta Antibody [Alexa Fluor® 594] Summary

• Immunogen: E. coli-derived recombinant human CXCL12/SDF‑1β
  Lys22-Met93
  Accession # P48061
• Specificity: Detects human CXCL12/SDF‑1 beta in direct ELISAs and Western blots. Neutralizes 60‑80% of the biological activity of CXCL12/SDF-1 beta and does not neutralize the biological activity of SDF‑1 alpha . In Western blots, less than 5% cross-reactivity with recomb
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Neutralization
  • Western Blot

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze. 12 months from date of receipt, 2 to 8 °C as supplied
• Buffer: Supplied 0.2mg/ml in 1X PBS with RDF1 and 0.09% Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for CXCL12/SDF-1 beta Antibody [Alexa Fluor® 594]

• CXCL12/SDF-1 beta
• hSDF-1beta
• SDF 1beta
• SDF1 beta
• SDF1b

Background

CXCL12, also known as SCYB12, PBSF and SDF-1 beta , is an 8.3 kDa, heparin-binding member of the CXC (or alpha-) family of chemokines (1, 2). Feline CXCL12( beta ) is synthesized as a 93 amino acid (aa) precursor that contains a 21 aa signal sequence and a 72 aa mature region (3). The mature molecule exhibits a typical three antiparallel beta -strand chemokine-like fold. There are no potential N-linked glycosylation sites. N-terminal aa’s 1 - 8 form a receptor binding site, while aa’s 1 and 2 (Lys-Pro) are involved in receptor activation (4). The C-terminus is likely associated with heparin binding (5). SDF-1 beta circulates and undergoes proteolytic processing. CD26 will remove the first two N-terminal amino acids, possibly creating a reduced-activity chemokine (5, 6). In addition to the beta -isoform, alternate splicing of the feline SDF-1 gene generates an alpha -isoform. The alpha isoform is identical to SDF-1 beta , but shorter by four aa’s at the C-terminus (3). Although alpha - and beta -isoforms show similar activity, SDF-1 alpha is differentially processed, and different cells secrete the two isoforms (5, 7). Mature feline SDF-1 beta is 96%, 97% and 100% aa identical to rat, mouse and human SDF-1 beta , respectively. Human (and by inference, feline) SDF-1 is active on mouse cells. SDF-1 alpha and beta are reported to be monomers at neutral pH and physiologic ionic strength (4). SDF-1 alpha is also reported to form dimers in the presence of heparansulfate (8). On the cell surface, this may well facilitate SDF-1 interaction with its two receptors, CXCR4 and syndecan-4 (9). Heparin sulfate is known to protect SDF-1 from proteolysis, and CXCR4 exists constitutively as a dimer (9 - 11). Among its many functions, CXCL12 is known to influence lymphopoiesis, regulate patterning and cell number of neural progenitors, and promote angiogenesis (12, 13). It also enhances the survival of myeloid progenitor cells.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.