Recombinant human CD4 protein (Active) (ab245956)
Key features and details
- Expression system: CHO cells
- Purity: > 95% SDS-PAGE
- Active: Yes
- Suitable for: SDS-PAGE, Functional Studies, HPLC
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Product name
Recombinant human CD4 protein (Active)
See all CD4 proteins and peptides -
Biological activity
Determined by its ability to binds HeLa cells expressing cell-surface MHC-II molecules.
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Purity
> 95 % SDS-PAGE.
> 95% by HPLC analysis. -
Expression system
CHO cells -
Accession
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Protein length
Protein fragment -
Animal free
No -
Nature
Recombinant -
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Species
Human -
Sequence
KKVVLGKKGD TVELTCTASQ KKSIQFHWKN SNQIKILGNQ GSFLTKGPSK LNDRADSRRS LWDQGNFPLI IKNLKIEDSD TYICEVEDQK EEVQLLVFGL TANSDTHLLQ GQSLTLTLES PPGSSPSVQC RSPRGKNIQG GKTLSVSQLE LQDSGTWTCT VLQNQKKVEF KIDIVVLAFQ KASSIVYKKE GEQVEFSFPL AFTVEKLTGS GELWWQAERA SSSKSWITFD LKNKEVSVKR VTQDPKLQMG KKLPLHLTLP QALPQYAGSG NLTLALEAKT GKLHQEVNLV VMRATQLQKN LTCEVWGPTS PKLMLSLKLE NKEAKVSKRE KAVWVLNPEA GMWQCLLSDS GQVLLESNIK VLPTWSTPVQ P -
Predicted molecular weight
41 kDa -
Amino acids
26 to 396 -
Additional sequence information
Extracellular domain.
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Preparation and Storage
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Alternative names
- CD 4
- CD4
- CD4 (L3T4)
see all -
Function
Accessory protein for MHC class-II antigen/T-cell receptor interaction. May regulate T-cell activation. Induces the aggregation of lipid rafts. -
Sequence similarities
Contains 3 Ig-like C2-type (immunoglobulin-like) domains.
Contains 1 Ig-like V-type (immunoglobulin-like) domain. -
Post-translational
modificationsPalmitoylation and association with LCK contribute to the enrichment of CD4 in lipid rafts. -
Cellular localization
Cell membrane. Localizes to lipid rafts. Removed from plasma membrane by HIV-1 Nef protein that increases clathrin-dependent endocytosis of this antigen to target it to lysosomal degradation. Cell surface expression is also down-modulated by HIV-1 Envelope polyprotein gp160 that interacts with, and sequesters CD4 in the endoplasmic reticulum. - Information by UniProt
