{"product_id":"c1s-antibody-complement-c1s-subcomponent-bha17128145","title":"C1S Antibody \/ Complement C1s subcomponent","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eC1S Antibody \/ Complement C1s subcomponent is an antibody targeting \u003cstrong\u003eC1S\u003c\/strong\u003e, raised in \u003cstrong\u003eRabbit\u003c\/strong\u003e for protein detection and localization studies where these specifications are required.\u003c\/p\u003e \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e C1S.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAntibody identity:\u003c\/strong\u003e Polyclonal (rabbit origin); Rabbit Ig.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConjugate\/label:\u003c\/strong\u003e Unconjugated (affects detection chemistry and multiplex compatibility).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Antigen affinity purified.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpecies reactivity:\u003c\/strong\u003e Human.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eListed applications:\u003c\/strong\u003e WB, IHC-P (refer to on-page specifications for application-specific guidance).\u003c\/li\u003e \u003c\/ul\u003e  \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003eC1S, also called Complement C1s subcomponent, is a serine protease enzyme that plays a significant role in the activation of the Complement system, which is a part of the innate immune system. C1S is a key component of the C1 complex, which is the first step in the Complement activation cascade. One of the main functions of C1S is to cleave C4 and C2 proteins, leading to the formation of the C3 convertase enzyme. This enzyme then cleaves C3 protein into two parts, C3a and C3b, which mediate various immune responses such as inflammation, opsonization, and cell lysis. Overall, the activation of the Complement system through C1S plays a critical role in enhancing the immune response and clearing pathogens from our bodies. In addition to its role in immune defense, C1S has also been implicated in other physiological processes such as inflammation, tissue repair, and development. Dysregulation of C1S activity has been linked to various diseases, including autoimmune disorders, inflammatory conditions, and infectious diseases.\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eComparative expression profiling across cell types, tissues, or perturbations (e.g., drug treatment, genetic editing, or differentiation).\u003c\/li\u003e \u003cli\u003eSubcellular localization and trafficking studies, including co-localization with pathway markers in microscopy-based assays.\u003c\/li\u003e \u003cli\u003eIntegration of protein-level measurements with transcriptomics or proteomics to relate abundance to regulation and phenotype.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCommon research applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eWestern blotting: researchers commonly compare relative signal levels across conditions and use appropriate negative\/positive controls for interpretation.\u003c\/li\u003e \u003cli\u003eImmunohistochemistry: researchers commonly compare relative signal levels across conditions and use appropriate negative\/positive controls for interpretation.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eInterpretation should account for antibody-dependent factors such as epitope accessibility, isoforms, and sample preparation differences across workflows.\u003c\/p\u003e \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eIsoforms and PTMs:\u003c\/strong\u003e many targets have multiple isoforms and post-translational modifications that can shift apparent signal or localization; interpret bands\/signals accordingly.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEpitope context:\u003c\/strong\u003e binding can depend on protein conformation and sample processing; region information in the title\/immunogen can help anticipate what may be detected.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpecies differences:\u003c\/strong\u003e predicted or validated reactivity may vary by ortholog sequence and sample context; confirm in your model system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eControl concepts:\u003c\/strong\u003e include negative controls (no-primary\/isotype), and where possible genetic controls (KO\/KD) or independent antibodies to strengthen conclusions.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- Sources (internal): - UniProtKB entry P09871 — UniProt — https:\/\/www.uniprot.org\/uniprotkb\/P09871 - Gene search: C1S — NCBI Gene — https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=C1S - Ensembl search: C1S — Ensembl — https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=C1S - PubMed search: C1S antibody — PubMed — https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=C1S+antibody - Reactome search: C1S — Reactome — https:\/\/reactome.org\/content\/query?q=C1S --\u003e","brand":"NSJ Bioreagents","offers":[{"title":"In 1X PBS, pH 7.4, with 0.09% sodium azide and 50% glycerol \/ 0.1 ml","offer_id":53046410248557,"sku":"F55082-0.1ML","price":439.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/get_image_cabda2e7-49cf-4bf9-9407-e3bfbfdcb7ce.jpg?v=1772000497","url":"https:\/\/www.ebiohippo.com\/products\/c1s-antibody-complement-c1s-subcomponent-bha17128145","provider":"BioHippo","version":"1.0","type":"link"}