Recombinant Human CACHD1 His-tag Protein, CF

2 μg/lane of Recombinant Human CACHD1 His-tag (Catalog # 10750-CA) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 113-127 kDa and 110-160 kDa, respectively.

• Reactivity: Hu
• Applications: Bioactivity
• Format: Carrier-Free

Recombinant Human CACHD1 His-tag Protein, CF Summary

• Details of Functionality: Measured by its binding ability in a functional ELISA. Recombinant Human CACHD1 His-tag (Catalog # 10750-CA) binds Recombinant Human/Mouse Wnt-5a Biotinylated (Catalog # BT645). The ED₅₀ for this effect is 1.25-10.0 μg/mL.
• Source: Human embryonic kidney cell, HEK293-derived human CACHD1 protein
  Glu36-Pro1095, with a C-terminal 6-His tag
• Accession #: Q5VU97.2
• N-terminal Sequence: Glu36
• Protein/Peptide Type: Recombinant Proteins
• Purity: >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
• Endotoxin Note: <0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

• Dilutions:
  • Bioactivity
• Theoretical MW: 119 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
• SDS-PAGE: 113-127 kDa, under reducing conditions

Packaging, Storage & Formulations

• 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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
• Purity: >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
• Reconstitution Instructions: Reconstitute at 500 μg/mL in PBS.

Notes

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

Alternate Names for Recombinant Human CACHD1 His-tag Protein, CF

• CACHD1
• cache domain containing 1
• Cache domain-containing protein 1
• KIAA1573VWFA and cache domain-containing protein 1
• RP4-655E10.1
• von Willebrand factor type A and cache domain containing 1
• VWCD1

Background

CACHD1 (Ca2+ channel and chemotaxis receptor Domain Containing 1) is a alpha 2δ-Like Protein that modulates CaV3 voltage-gated calcium channel activity (1, 2). Mature Human CACHD1 consists of a 1060 amino acid (aa) extracellular domain (ECD), a 21 aa transmembrane segment, and a 158 aa cytoplasmic domain. The ECD contains a von Willebrand factor A (VWA) domain and two bacterial chemosensory-like cache domains (1). Within the ECD, human CACHD1 shares 97.5% and 97.7% aa sequence identity with mouse and rat CACHD1, respectively. Diseases associated with CACHD1 include Cercarial Dermatitis and Hypertropia. CACHD1 increases the presence of CaV3.1 at the cell surface and causes an increase in channel open probability (2). CACHD1 is a new activity-modifying protein for voltage-gated calcium channels (2). Such physiological actions may have implications in targeting diseases involving aberrant neuronal firing, as CaV3 channels have been proposed as therapeutic targets to combat pain and epilepsy (2). CACHD1 and MDGA1 are novel in vivo substrates for beta-site APP cleaving enzyme 1 (BACE1), suggesting that cleavage of both proteins may contribute to the numerous functions of BACE1 in the nervous system (3). BACE1 inhibition is a major therapeutic approach for Alzheimer disease (3). CACHD1 closely interacts with voltage-gated calcium channels of the N-type58 and T-type59 at the cell surface and enhances the densities of their calcium currents (3). BACE1 cleavage is a mechanism to control CACHD1's function in calcium signaling and synaptic transmission (3). Expression of CACHD1 increased both CaV2.2 currents and cell surface trafficking in both cell lines and neurons (4). CACHD1 competed with a2d-1 for binding to CaV2.2 and for its functional effects and can therefore inhibit responses to a2d-1 (4). CACHD1 is widely expressed in many tissues, including the brain, lungs, and small intestine (4). CACHD1 contains a VWA domain that has a disrupted metal ion-dependent adhesion site (MIDAS) motif, a sequence that is conserved in the human, rat, mouse, and zebrafish CACHD1 proteins (4). At the Wnt Signaling Gordon Conference in August 2019, Yvonne Jones (Oxford) presented an unpublished crystal structure of the transmembrane proteins CACHD1 in a complex between LRP6 and Fz5. Their data suggest that CACHD1 is an inhibitor of Wnt signaling.

1. Cottrell, G.S. et al. (2018) J. Neurosci. 38:9186.
2. Stephens, G.J. and G.S. Cottrell (2019) Channels (Austin) 13:120.
3. Njavro, J. R. et al. (2020) The FASEB J. 34:2465.
4. Dahimene, S. et al. (2018) Cell Reports 25:1610.

Bioinformatics

• Uniprot:
  • Q5VU97.2()