{"product_id":"recombinant-human-hla-class-ii-histocompatibility-antigen-gamma-chain-cd74-partial-active-bhp10509489","title":"Recombinant Human HLA class II histocompatibility antigen gamma chain (CD74), partial (Active)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eRecombinant Human HLA class II histocompatibility antigen gamma chain (CD74), partial (Active) is a recombinant protein reagent derived from Homo sapiens (Human) and produced in Mammalian cell. It is commonly used to support Immunology research by enabling antigen presentation and binding assays, immune receptor interaction studies and structural immunology in controlled in vitro settings.\u003c\/p\u003e \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExpressed region:\u003c\/strong\u003e 73-232aa. Region selection can focus on functional domains, improve solubility, or isolate interaction surfaces for targeted studies.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExpression system:\u003c\/strong\u003e Mammalian cell. Expression host can influence folding and the presence\/absence of post-translational modifications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTag \/ fusion:\u003c\/strong\u003e N-terminal 10xHis-tagged. Tags can support purification and detection; evaluate potential tag effects when studying sensitive interactions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolecular weight (reported):\u003c\/strong\u003e 21.0 kDa. Apparent size may vary with tags, processing, and gel conditions.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eWhen comparing results across batches or platforms, interpret signals in the context of construct design (region, tags) and expression host, especially for modification-dependent interactions.\u003c\/p\u003e \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003eThe gene commonly associated with this target is \u003cstrong\u003eCD74\u003c\/strong\u003e. CD74 refers to a protein target that is studied across multiple biological contexts; annotations and nomenclature can vary by species and isoform. This product corresponds to the Homo sapiens (Human) sequence context, which can be important when comparing homologs or orthologs across model systems. For curated functional annotations, domains, and sequence features, consult primary databases (e.g., UniProt\/NCBI) and the recent literature for the specific organism and isoform.\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e \u003cli\u003eProfiling immune signaling nodes and cytokine pathways across cell types and activation states.\u003c\/li\u003e \u003cli\u003eStudying ligand–receptor interactions that shape immune cell communication and effector function.\u003c\/li\u003e \u003cli\u003eBuilding quantitative assays to compare pathway modulation by genetic or pharmacologic perturbations.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eRelevance:\u003c\/strong\u003e 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 . Disrupts cathepsin-mediated Ebola virus glycoprotein processing, which prevents viral fusion and entry. This antiviral activity is specific to p41 isoform .\u003c\/p\u003e \u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e \u003cli\u003eAssay and standard development for immunoassays or binding-based detection methods.\u003c\/li\u003e \u003cli\u003eProtein–protein interaction studies (e.g., receptor–ligand or complex assembly) using purified components.\u003c\/li\u003e \u003cli\u003eStructure–function analysis, including domain mapping or evaluation of sequence variants.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eIn quantitative assay development, changes in binding or activity readouts are typically interpreted relative to appropriate negative\/positive controls and, where possible, orthogonal assay formats that support the same conclusion.\u003c\/p\u003e \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e \u003cli\u003eRecombinant constructs may represent a defined region (domain) rather than the full-length protein; interpret results in the context of the expressed region.\u003c\/li\u003e \u003cli\u003eTag or fusion elements can aid purification and detection but may influence binding surfaces or oligomerization; consider tag controls when relevant.\u003c\/li\u003e \u003cli\u003eSpecies and isoform differences can affect interaction partners and post-translational modifications; align experimental controls to the intended biological context.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- Sources (internal): - UniProtKB entry for P04233-2 — UniProt — https:\/\/www.uniprot.org\/uniprotkb\/P04233-2\/entry - NCBI Gene search (CD74) — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=CD74 - PubMed search (CD74) — NCBI — https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=CD74 - RCSB PDB search (CD74) — RCSB PDB — https:\/\/www.rcsb.org\/search?query=CD74 - Reactome Pathway Browser — Reactome — https:\/\/reactome.org\/ --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"1 mg","offer_id":53065289695597,"sku":"CSB-MP004956HU1(F2)-1MG","price":1940.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53065432957293,"sku":"CSB-MP004956HU1(F2)-100UG","price":294.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53065432990061,"sku":"CSB-MP004956HU1(F2)-20UG","price":118.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-MP004956HU1_F2_-SDS.jpg?v=1772476459","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-human-hla-class-ii-histocompatibility-antigen-gamma-chain-cd74-partial-active-bhp10509489","provider":"BioHippo","version":"1.0","type":"link"}