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Recombinant Human TIM-4 Fc Chimera Protein, CF

Catalog #: 9300-TM Datasheet / COA / SDS
Catalog # Availability Size / Price Qty
9300-TM-050
Recombinant Human TIM-4 Fc Chimera Protein Bioactivity
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Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Human TIM-4 Fc Chimera Protein, CF Summary

Product Specifications

Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to inhibit anti-CD3-induced proliferation of stimulated human T cells. The ED50 for this effect is 0.15-0.75 μg/mL.
Source
Human embryonic kidney cell, HEK293-derived human TIM-4 protein
Human TIM-4
(Glu25-Gln314)
Accession # Q96H15		 IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
Q96H15
N-terminal Sequence
Analysis
Glu25
Predicted Molecular Mass
58 kDa
SDS-PAGE
95-113 kDa, reducing conditions

Product Datasheets

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9300-TM

Product Datasheet
COA
SDS

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.

9300-TM

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 500 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.
  • 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.

Scientific Data

Bioactivity Recombinant Human TIM-4 Fc Chimera Protein Bioactivity View Larger

Recombinant Human TIM-4 Fc Chimera (Catalog # 9300-TM) inhibits anti-CD3-induced proliferation of human T cells. The ED50 for this effect is 0.15-0.75 μg/mL.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: TIM-4

TIM-4 (T cell; immunoglobulin; mucin-4), also known as SMUCKLER,  is a 60 kDa member of the TIM family of immune regulating proteins. TIMs are type I transmembrane proteins with one Ig-like V domain and one Ser/Thr-rich mucin domain (1). Mature human TIM-4 consists of a 290 aa extracellular domain (ECD), a 21 aa transmembrane segment, and a 43 aa cytoplasmic tail (2). Structurally, TIM-4 is distinguished from other TIMs by the presence of an RGD motif in its Ig domain and the lack of a site for tyrosine phosphorylation in its cytoplasmic tail. Within the ECD human TIM-4 shares 45% aa sequence identity with mouse and rat TIM-4. TIM-4 is expressed by macrophages and mature dendritic cells but not by lymphocytes (2, 3). It binds specifically to TIM-1 which is also the cellular receptor for hepatitis A virus and has been implicated in the development of asthma (3-5). Among hematopoietic cells, TIM-1 is expressed on activated B and T cells, preferentially in the Th2 subset of CD4+ T cells (3, 6). The interaction of TIM-4 with TIM-1 induces co-stimulatory and hyperproliferative signals in T cells (3). TIM-4 also binds to phosphatidylserine (PS) on the surface of apoptotic cells (7). It enhances the clearance of apoptotic cells including T cells in the contraction phase of immune responses, apoptotic macrophages that accumulate in atherosclerosis, and dying neurons in the brain (7-10). TIM-4 is upregulated on some tumor cells and tumor-associated myeloid cells where it binds Integrin alpha V beta 3, contributes to tumor progression, and inhibits tumor-specific cellular immunity (11, 12).

References
  1. Fang, X.Y. et al. (2015) Autoimmunity 48:189.
  2. Shakhov, A.N. et al. (2004) Eur. J. Immunol. 34:494.
  3. Meyers, J.H. et al. (2005) Nat. Immunol. 6:455.
  4. Feigelstock, D. et al. (1998) J. Virol. 72:6621.
  5. McIntire, J.J. et al. (2001) Nat. Immunol. 2:1109.
  6. Khademi, M. et al. (2004) J. Immunol. 172:7169.
  7. Kobayashi, N. et al. (2007) Immunity 27:927.
  8. Albacker, L.A. et al. (2010) J. Immunol. 185:6839.
  9. Mazaheri, F. et al. (2014) Nat. Commun. 5:4046.
  10. Foks, A.C. et al. (2016) Arterioscler. Thromb. Vasc. Biol. 36:456.
  11. Zhang, Q. et al. (2015) Br. J. Cancer 113:1484.
  12. Baghdadi, M. et al. (2013) Immunity 39:1070.
Long Name
T Cell Immunoglobulin Mucin-4
Entrez Gene IDs
91937 (Human); 276891 (Mouse); 102140672 (Cynomolgus Monkey)
Alternate Names
FLJ27515; Smuckler; T-cell immunoglobulin and mucin domain containing 4; T-cell immunoglobulin and mucin domain-containing protein 4; T-cell membrane protein 4; TIM4; TIM-4; TIMD4; TIMD-4

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