Recombinant Mouse MBL-1 Protein
R&D Systems, part of Bio-Techne | Catalog # 2077-MB
Key Product Details
Source
NS0
Accession #
Structure / Form
Oligomer
Conjugate
Unconjugated
Applications
Binding Activity
Product Specifications
Source
Mouse myeloma cell line, NS0-derived mouse MBL-1 protein
Ser18-Ala239
Ser18-Ala239
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
N-terminal Sequence Analysis
Ser18
Predicted Molecular Mass
24 kDa
SDS-PAGE
29 kDa, reducing conditions
Activity
Measured by its ability to bind with Mannan in a functional ELISA.
Formulation, Preparation and Storage
Carrier Free
What does CF mean?CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
What formulation is right for me?In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
Carrier: 2077-MB
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein. |
| Reconstitution | Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Carrier Free: 2077-MB/CF
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 100 μg/mL in sterile PBS. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
Background: MBL-1
Mannan binding lectin (MBL) belongs to the collectin family of innate immune defense proteins, which binds to an array of carbohydrate patterns on pathogen surfaces (1, 2). Collectin family members share common structural features: a cysteine rich amino-terminal domain, a collagen-like region, an alpha-helical coiled-coil neck domain and a carboxy terminal C-type (Ca++-dependent) lectin or carbohydrate recognition domain (CRD). MBL homotrimerizes to form a structural unit joined by N-terminal disulfide bridges. These homotrimers further associate into oligomeric structures of up to 6 units. Whereas two forms of MBL proteins (MBL-1, also known as S-MBP or MBL-A and MBL-2, also known as L-MBP or MBL-C) exist in rodents and other animals, only one functional MBL protein is present in humans. Mouse MBL-1 shares about 52% and 60% amino acid sequence identity with mouse MBL-2 and human MBL, respectively.
In mouse, MBL-1 and MBL-2 are the only collectins that can activate complement via the lectin complement pathway (1, 2). Serum oligomeric MBL associates with MBL-associated serine protease (MASP) proenzymes. The MBL-MASP proenzyme complex preferentially interacts with sugar patterns containing mannose, glucose, L-fucose, or N-acetyl-glucosamine present at a terminal nonreducing postion on the cell surface of various pathogens and certain tumor cells. This interaction induces pro-enzyme activation and the triggering of the complement cascade, resulting in opsonization and pathogen removal via humoral and cellular immune responses. MBL does not recognize self-components or glycoproteins from other higher animals due to the presence of terminal sialic acid or galactose that interrupts the repeating carbohydrate structures (3). A number of membrane receptors for MBL, including C1q phagocytic receptor (C1qRp), calreticulin (also known as C1qR), and CR1 (CD35), have been described. Interactions with these receptors may also be important in stimulating phagocytosis (1, 2).
Mouse MBL-1 and MBL-2 are produced primarily in the liver and are secreted into the blood stream. In addition, mouse MBL-1 is also expressed in lung, kidney and testis while MBL-2 is expressed in kidney, thymus and small intestine (1, 4, 5).
References
- Holmskov, U. et al. (2003) Annu. Rev. Immunol. 21:547.
- Fujita, R. et al. (2004) Immunol. Rev. 198:185.
- Saevarsdottir, S. et al. (2004) Scand. J. Immnunol. 60:23.
- Uemura, K. et al. (2002) J. Immunol. 169:6945.
- Wagner, S. et al. (2003) J. Immunol. 170:1462.
Long Name
Mannose Binding Lectin
Alternate Names
MBL-A, MBL1, MBP-A, S-MBP
Entrez Gene IDs
17194 (Mouse)
Gene Symbol
MBL1
UniProt
Additional MBL-1 Products
Product Documents for Recombinant Mouse MBL-1 Protein
Product Specific Notices for Recombinant Mouse MBL-1 Protein
For research use only
Loading...
Loading...
Loading...