• Species Reactivity

  Human

• Specificity

  Detects human SALM3/LRFN4 in direct ELISAs. In direct ELISAs, 100% cross-reactivity with recombinant human (rh) SALM1, approximately 20-25% cross-reactivity with recombinant human rhSALM2, and no cross-reactivity with rhSALM4 is observed.

• Source

  Monoclonal Mouse IgG    ₁ Clone # 578102

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  Chinese hamster ovary cell line CHO-derived recombinant human SALM3/LRFN4    
  Cys17-Leu518    
  Accession # Q6PJG9

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Immunohistochemistry

  8-25 µg/mL

  See below

• 
  

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

Data Examples

Preparation and Storage

• Reconstitution

  Sterile PBS to a final concentration of 0.5 mg/mL.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: SALM3/LRFN4

Synaptic adhesion-like molecule 3 (SALM3; also leucine-rich repeat and fibronectin type-III domain-containing protein 4 (LRFN4) is an approximately 90 kDa member of the Lrfn family of type I transmembrane glycoproteins (1).  Human SALM3 is synthesized as a 635 amino acid (aa) precursor that contains a 16 aa signal sequence, a 502 aa extracellular domain (ECD), a 21 aa transmembrane region, and a 96 aa cytoplasmic region.  The ECD consists of seven leucine-rich repeats (LRR), an IgC2-like domain, and a fibronectin type-III domain, tandemly aligned in that order (1 - 2).  In addition, there are six potential sites for N-linked glycosylation.  The C-terminal region contains an intracellular PDZ binding domain, which is conserved among SALMs 1 - 3, but is absent in SALMs 4 and 5 (3). Mature human SALM3 shares 97% aa sequence identity with mature mouse SALM3.  Northern blot analysis showed that in mice, SALM3 is strongly expressed in the adult brain and is also present in the adult testis (1). It is distributed throughout the neuron, including the growth cone (3).  In the developing mouse embryo, a temporal expression profile blot revealed a general increment of expression around E10.5, with weak expression detected before E10.5 (1). SALM3, like the other SALMs, promotes neurite outgrowth (3).  Specifically, the SALMs modify total outgrowth and neurite branching (3).  SALM3 may also be involved in synapse formation, synaptic maintenance, and other cellular interactions (3).

• References:

1. Morimura, N. et al. (2006) Gene 380:72.

2. Wang, C.Y. et al. (2006) J. Neurosci. 26:2174.

3. Wang, P.Y. et al. (2008) Mol. Cell. Neurosci. 39:83.

• Long Name:

  Synaptic Adhesion-like Molecule 3/Leucine-rich Repeat and Fibronectin Type III Domain Containing 4

• Entrez Gene IDs:

  78999 (Human); 225875 (Mouse); 688721 (Rat)

• Alternate Names:

  FIGLER6; LRFN4; SALM3