Human TIM-1/KIM-1/HAVCR Alexa Fluor® 750-conjugated Antibody

Clone 219211 was used by HLDA to establish CD designation
Catalog # Availability Size / Price Qty
FAB1750S-100UG
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Human TIM-1/KIM-1/HAVCR Alexa Fluor® 750-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human TIM‑1/KIM-1/HAVCR in direct ELISAs and Western blots. Does not cross-react with recombinant mouse (rm) TIM-1, rmTIM-2, or rhTIM-3.
Source
Monoclonal Mouse IgG2b Clone # 219211
Immunogen
Mouse myeloma cell line NS0-derived recombinant human TIM‑1/KIM-1/HAVCR
Ser21-Thr288
Accession # AAC39862
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 750 (Excitation= 749 nm, Emission= 775 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
Stimulated Human CD4+ cells

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

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: TIM-1/KIM-1/HAVCR

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 oneV-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).

References
  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.
Long Name
T Cell Immunoglobulin Mucin-1
Entrez Gene IDs
26762 (Human); 171283 (Mouse); 286934 (Rat); 102141332 (Cynomolgus Monkey)
Alternate Names
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

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