• Species Reactivity

  Human

• Specificity

  Detects human Complement Factor MASP3 Catalytic Domain in direct ELISAs and Western blots.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  Mouse myeloma cell line NS0-derived recombinant human Complement Factor MASP3    
  Ile450-Val721    
  Accession # NP_624302

• 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

• Western Blot

  0.1 µg/mL

  Recombinant Human Complement MASP3 Catalytic Domain (Catalog # )

• 
  

• Immunoprecipitation

  25 µg/mL

  Conditioned cell culture medium spiked with Recombinant Human Complement MASP3 Catalytic Domain (Catalog # ),

• 
  

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

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• 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: Complement Factor MASP3

MASP3 is a member of the MASPs involved in mannan-binding lectin (MBL) complement pathway (1). The MBL pathway is initiated by the binding of MBL to specific carbohydrate structures found on the surface of a variety of microorganisms. Activation of the complement pathway via MBL is initiated by specific MASPs. Three MASPs have been identified and all have domain structures similar to those of C1r and C1s with a heavy chain (chain A) and a light chain (chain B). Chain A is composed of CUB1, EGF, CUB2, CCP1 and CCP2 while chain B corresponds to the catalytic domain found in many serine proteases. MASP1 and MASP3 are two alternatively spliced products of a single gene, which contain the same A chains but entirely different B chains. Distinct MASPs found in different MBL oligomers may have different biological activities. For example, MASP3, found together with MASP2, downregulates the C4 and C2 cleaving activity of MASP2. The protease activity of MASP3 is first revealed here using rhMASP3CD (2), which is inhibited by serine protease inhibitors such as Ecotin and AEBSF (Catalog #  and ).

• References:

1. Dahl, M.R. et al. (2001) Immunity 15:127.

2. Cortesio, C.L. and W. Jiang (2006) Arch. Biochem. Biophys. 449:164.
   

• Long Name:

  Mannan-binding lectin-Associated Serine Protease 3

• Entrez Gene IDs:

  5648 (Human)

• Alternate Names:

  Complement Factor MASP3; Complement factor MASP-3; Complement-activating component of Ra-reactive factor; CRARF1; CRARFMAP1; DKFZp686I01199; EC 3.4.21; EC 3.4.21.-; EC 3.4.21.104; EC 3.4.21.42; FLJ26383; mannan-binding lectin serine peptidase 1 (C4/C2 activating component ofRa-reactive factor); mannan-binding lectin serine protease 1 (C4/C2 activating component ofRa-reactive factor); mannan-binding lectin serine protease 1; Mannose-binding lectin-associated serine protease 1; Mannose-binding protein-associated serine protease; MAp44; MASP; MASP1; MASP-1; MASP3; MGC126283; MGC126284; PRSS5; Ra-reactive factor serine protease p100; RaRF; Serine protease 5