Recombinant Human TIM-1/KIM-1/HAVCR His-tag Protein, CF

Recombinant Human TIM-1/KIM-1/HAVCR (Catalog # 1750-TM) inhibits anti-CD3-induced proliferation of stimulated human T cells. Human T lymphocytes cultured for 72 hours with PHA were incubated for anadditional 3 days in 96 well plates coated with 500 ng/mL anti-CD3 and RecombinantHuman TIM‑1/KIM‑1/HAVCR. The ED50 for this effectis 0.2-0.8 µg/mL.

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

Recombinant Human TIM-1/KIM-1/HAVCR His-tag Protein, CF Summary

• Details of Functionality: Measured by its ability to inhibit anti-CD3-induced proliferation of stimulated human T cells. Human T lymphocytes cultured for 72 hours with PHA were incubated for an additional 3 days in 96 well plates coated with 500 ng/mL
  anti-CD3 and Recombinant Human TIM‑1/KIM‑1/HAVCR.
  The ED₅₀ for this effect is 0.2-0.8 µg/mL.
  Optimal dilutions should be determined by each laboratory for each application.
• Source: Mouse myeloma cell line, NS0-derived human TIM-1/KIM-1/HAVCR protein
  Ser21-Thr288, with a C-terminal 6-His tag
• Accession #: AAC39862
• N-terminal Sequence: Ser21
• Protein/Peptide Type: Recombinant Proteins
• Gene: HAVCR1
• Purity: >90%, 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: 29.6 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: 85-105 kDa, 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.
• Purity: >90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
• Reconstitution Instructions: Reconstitute at 100 μg/mL in sterile PBS.

Notes

This product is covered by one or more of the following US Patents 7,300,652; 7,041,290; 6,664,385 and other US and foreign patents pending or issued.

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

Alternate Names for Recombinant Human TIM-1/KIM-1/HAVCR His-tag Protein, CF

• CD365
• HAVCR1
• HAVCR-1
• HAVCRT cell immunoglobin domain and mucin domain protein 1
• hepatitis A virus cellular receptor 1
• Kidney injury molecule 1
• KIM1
• KIM-1
• T-cell immunoglobulin and mucin domain-containing protein 1
• TIM1
• TIM-1
• TIM-1TIM
• TIM1TIMD-1
• TIMD1T-cell membrane protein 1

Background

TIM-1 (T cell-immunoglobulin-mucin; also KIM-1 and HAVcr-1) is a 100 kDa, type I transmembrane glycoprotein member of the TIM family of immunoglobulin superfamily molecules (1-3). This gene family is involved in the regulation of Th1 and Th2-cell-mediated immunity. Human TIM-1 is synthesized as a 359 amino acid (aa) precursor that contains a 20 aa signal sequence, a 270 aa extracellular domain (ECD), a 21 aa transmembrane segment and a 48 aa cytoplasmic domain (4-6). The ECD contains one V-type Ig-like domain and a mucin region characterized by multiple PTTTTL motifs. The mucin region undergoes extensive O-linked glycosylation. The TIM-1 gene is highly polymorphic and undergoes alternate splicing (1). For instance, the presence of a six aa sequence (MTTTVP) at position # 137 of the mature molecule is associated with protection from atopy in people with a history of hepatitis A (7, 8). There are two cytoplasmic alternate splice forms of TIM-1. One is a long (359 aa) kidney form termed TIM-1b, and one is a short (334 aa) liver form termed TIM-1a. Both are identical through the first 323 aa of their precursors. TIM-1b contains a tyrosine phosphorylation motif that is not present in 1a (6). TIM-1 is also known to circulate as a soluble form. Constitutive cleavage by an undefined MMP (possibly ADAM33) releases an 85-90 kDa soluble molecule (6). The ECD of human TIM-1 is 50% and 43% aa identical to mouse and canine TIM-1 ECD, respectively. The only two reported ligands for TIM-1 are TIM-4 and the hepatitis A virus (4, 9). However, others are believed to exist, and based on the ligand for TIM-3, one may well be an S-type lectin (10). TIM-1 ligation induces T cell proliferation and promotes cytokine production (1, 10).

1. Meyers, J.H. et al. (2005) Trends Mol. Med. 11:1471.
2. Kuchroo, V.K. et al. (2003) Nat. Rev. Immunol. 3:454.
3. Mariat, C. et al. (2005) Phil. Trans. R. Soc. B 360:1681.
4. Feigelstock, D. et al. (1998) J. Virol. 72:6621.
5. Ichimura, T. et al. (1998) J. Biol. Chem. 273:4135.
6. Bailly, V. et al. (2002) J. Biol. Chem. 277:39739.
7. Umetsu, D.T. et al. (2005) J. Pediatr. Gastroenterol. Nutr. 40:S43.
8. Gao, P-S. et al. (2005) J. Allergy Clin. Immunol. 115:982.
9. Zhu, C. et al. (2005) Nat. Immunol. 6:1245.
10. Meyers, J.H. et al. (2005) Nat. Immunol. 6:455.

Publications for TIM-1/KIM-1/HAVCR (1750-TM)(2)

Publications using 1750-TM

• Ayala-Lujan , Jorge Lu, Vijayakumar , Vidhya, Gong , Mei, Smith , Rachel, Santiago , Araceli, Ruiz-Perez , Fernando Broad spectrum activity of a lectin-like bacterial serine protease family on human leukocytes. PLoS ONE, 2014-09-24;9(9):e107920. 2014-09-24 [PMID: 25251283] (Enzyme Assay, Enzyme Assay Substrate, Bacteria, Human)
• Venkata S. Sabbisetti, Sushrut S. Waikar, Daniel J. Antoine, Adam Smiles, Chang Wang, Abinaya Ravisankar et al. Blood Kidney Injury Molecule-1 Is a Biomarker of Acute and Chronic Kidney Injury and Predicts Progression to ESRD in Type I Diabetes Journal of the American Society of Nephrology 2014-10-01 [PMID: 24904085] (ELISA Standard, Human)

Bioinformatics

• Gene Symbol: HAVCR1
• Uniprot:
  • AAC39862()