- Catalog number
- PA1875-iFluor647
- Size / count
- 100 µg
- Dry ice
- No
- Hazardous
- No
- Discontinued
- Yes
- Background
- CD1A (Thymocyte antigen CD1A) also known as CD1, is a human protein encoded by the CD1A gene. CD1A is 1 of 5 distinct CD1 genes that are variably conserved in different mammalian species. This gene encodes a member of the CD1 family of transmembrane glycoproteins, which are structurally related to the major histocompatibility complex (MHC) proteins and form heterodimers with beta-2-microglobulin.The CD1A gene is mapped on 1q23.1. The CD1 proteins mediate the presentation of primarily lipid and glycolipid antigens of self or microbial origin to T cells. CD1A is concentrated in the early or recycling endosome. Moody et al. (2004) reported that CD1A presents to T cells a family of previously unknown lipopeptides from Mycobacterium tuberculosis, named didehydroxymycobactins because of their structural relation to mycobactin siderophores. The protein encoded by this gene localizes to the plasma membrane and to recycling vesicles of the early endocytic system. Apolipoprotein E (107741) binds lipid antigens and delivers them by receptor-mediated uptake into endosomal compartments containing CD1 in antigen-presenting cells.
- Synonyms
- T-cell surface glycoprotein CD1a;T-cell surface antigen T6/Leu-6;hTa1 thymocyte antigen;CD1a;CD1A;
- Gene Name
- T-cell surface glycoprotein CD1a
- UniProt
- P06126
- Host
- Rabbit
- Reactivity
- Human
- Cross Reactivity
- No cross-reactivity with other proteins
- Immunogen
- A synthetic peptide corresponding to a sequence in the middle region of human CD1a.
- Clonality
- Polyclonal
- Tissue Specificity
- Expressed on cortical thymocytes, epidermal Langerhans cells, dendritic cells, on certain T-cell leukemias, and in various other tissues. .
- Applications
- WB
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
- Function
- Antigen-presenting protein that binds self and non-self lipid and glycolipid antigens and presents them to T-cell receptors on natural killer T-cells. .
- Components
- Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
- References & Citations
- 1. Martin, L. H., Calabi, F., Lefebvre, F.-A., Bilsland, C. A. G., Milstein, C. Structure and expression of the human thymocyte antigens CD1a, CD1b, and CD1c.Proc. Nat. Acad. Sci. 84: 9189-9193, 1987.
2. Moody, D. B., Young, D. C., Cheng, T.-Y., Rosat, J.-P., Roura-mir, C., O'Connor, P. B., Zajonc, D. M., Walz, A., Miller, M. J., Levery, S. B., Wilson, I. A., Costello, C. E., Brenner, M. B. T cell activation by lipopeptide antigens. Science 303: 527-531, 2004. Note: Erratum: Science 304: 211 only, 2004.
3. Park, S.-H., Bendelac, A. CD1-restricted T-cell responses and microbial infection. Nature 406: 788-792, 2000.
- Storage Conditions
- Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.
- Calculated Molecular Weight
- 37077 MW
- Observed Molecular Weight
- 37 kDa
- Fragment
- Rabbit IgG
- Specificity
- No cross reactivity with other proteins.
- Applications Notes
- Western blot, 0.1-0.5μg/ml, Human<br>
- Subcellular Location
- Cell membrane; Single-pass type I membrane protein. Endosome membrane. Subject to intracellular trafficking between the cell membrane and endosomes. Localizes to cell surface lipid rafts.
- Sequence Similarities
- Contains 9 SRCR domains.
- Protein Name
- T-cell surface glycoprotein CD1a