CD74 Rabbit mAb [81L8]Cat NO.: A25757

Protein names ：CD74,DHLAG,HG2A_HUMAN,HLA class II histocompatibility antigen gamma chain [Cleaved into: Class-II-associated invariant chain peptide ]

UniProtID ：P04233

MASS(da) ：33,516

MW(kDa) ：20-25、30-40 kDa

Form ：Liquid

Purification ：Protein A purification

Host ：Rabbit

Isotype ：IgG

sensitivity ：Endogenous

Reactivity ：Human

• ApplicationDilution
• 免疫印迹(WB)1:1000-2000
• The optimal dilutions should be determined by the end user

Specificity ：Antibody is produced by immunizing animals with a synthetic peptide at the sequence of Human CD74

Storage ：Antibody store in 10 mM PBS, 0.5mg/ml BSA, 50% glycerol. Shipped at 4°C. Store at-20°C or -80°C. Products are valid for one natural year of receipt.Avoid repeated freeze / thaw cycles.

WB Positive detected ：Raji cells

Function ： Plays a critical role in MHC class II antigen processing by stabilizing peptide-free class II alpha/beta heterodimers in a complex soon after their synthesis and directing transport of the complex from the endoplasmic reticulum to the endosomal/lysosomal system where the antigen processing and binding of antigenic peptides to MHC class II takes place. Serves as cell surface receptor for the cytokine MIF., [Class-II-associated invariant chain peptide]: Binds to the peptide-binding site of MHC class II alpha/beta heterodimers forming an alpha-beta-CLIP complex, thereby preventing the loading of antigenic peptides to the MHC class II complex until its release by HLA-DM in the endosome.., [Isoform p41]: Stabilizes the conformation of mature CTSL by binding to its active site and serving as a chaperone to help maintain a pool of mature enzyme in endocytic compartments and extracellular space of antigen-presenting cells (APCs). Has antiviral activity by stymieing the endosomal entry of Ebola virus and coronaviruses, including SARS-CoV-2 (PubMed:32855215). Disrupts cathepsin-mediated Ebola virus glycoprotein processing, which prevents viral fusion and entry. This antiviral activity is specific to p41 isoform (PubMed:32855215)..

Tissue specificity ：[Isoform p41]: In B cells, represents 10% of total CD74 expression..,[Isoform p33]: In B cells, represents 70% of total CD74 expression..

Subcellular locationi ：Cell membrane,Single-pass type II membrane protein. Endoplasmic reticulum membrane. Golgi apparatus, trans-Golgi network. Endosome. Lysosome.

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 1% w/v BSA, 1X TBST at 4°C overnight.