Recombinant Human CRIM1 Protein, CF Summary
Product Specifications
Leu35-Ser939, with a C-terminal 6-His tag
Analysis
Product Datasheets
Carrier Free
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.
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.
1917-CM
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 100 μg/mL in 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.
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Reconstitution Calculator
Background: CRIM1
Cysteine rich motor neuron 1 (CRIM1) is a type I transmembrane glycoprotein of the chordin-like cysteine-rich repeat (CRR) family of BMP inhibitors (1 - 4). The ~130 kDa, 1036 amino acid (aa) CRIM1 contains a 34 aa signal sequence, a 905 aa extracellular domain (ECD), a 21 aa transmembrane domain and a 76 aa cytoplasmic domain. The ECD includes an N-terminal IGF-binding protein-like motif and six chordin-like von Willebrand C-type CRRs. The ECD can be released from the cell, presumably by proteolytic processing (4). Human CRIM1 ECD shows 88%, 88%, 91%, 86%, 87%, 83% and 72% aa identity with mouse, rat, dog, cow, opossum, chick and zebrafish CRIM1 ECD, respectively. CRIM1 can interact with TGF-beta family ligands, including BMPs 2, 4 and 7, via its CRR domains (4). It binds BMPs intracellularly and antagonizes them by lowering their expression, processing and secretion (4). CRIM1 is expressed in the developing spinal cord in the floor plate and developing motor neurons (1). It is also expressed by perivascular smooth muscle cells and aligns at points of cell-cell contact during endothelial cell capillary formation (2). Endothelial cell expression in vitro appears to be specific to cells that are adherent and growing (2). CRIM1 is also expressed in a spatially and temporally restricted manner in the developing lens, limbs, kidney, teeth and testis (5). Studies where CRIM1 expression is manipulated in developing mouse, chick and zebrafish support its involvement in regulation of vascular and somitic development and organogenesis (5 - 7).
- Kolle, G. et al. (2000), Mech. Dev. 90:181.
- Glienke, J. et al. (2002) Mech. Dev. 119:165.
- Abreu, J. G. et al. (2002) Gene 287:39.
- Wilkinson, L. et al. (2003) J. Biol. Chem. 278:34181.
- Pennisi, D. J. et al. (2007) Dev. Dyn. 236:502.
- Kolle, G. et al. (2003) Dev. Dyn. 226:107.
- Kinna, G. et al. (2006) Mech. Dev. 123:277.
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