{"product_id":"immobilized-papain-bhp10506620","title":"Immobilized Papain","description":"\u003ch2\u003eOverview\u003c\/h2\u003e \u003cp\u003eNative papaya papain (PAP) is purified from papaya latex and supplied as a research reagent. It is commonly used as a reference material in biochemical and analytical workflows, and to support interpretation when naturally occurring proteoforms (for example, glycosylation or other post‑translational modifications) may matter.\u003c\/p\u003e \u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eNative-source preparation:\u003c\/strong\u003e Purified from a biological source, which can be useful when studying naturally occurring proteoforms and complex formation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolecular form:\u003c\/strong\u003e Full length protein.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClassification:\u003c\/strong\u003e Attacin\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e \u0026gt;95%(SDS-PAGE) (as reported).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Liquid\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eThese elements help determine how the reagent behaves in binding, stability, or quantitative measurements, and how closely it reflects biology in the chosen model system.\u003c\/p\u003e \u003ch2\u003eBiological background\u003c\/h2\u003e \u003cp\u003ePapain is a plant-derived cysteine protease widely used as a model endopeptidase and as a tool enzyme in protein processing. In antibody research, papain is commonly used to generate Fab and Fc fragments by cleaving in the hinge region, enabling separation of antigen-binding and Fc-mediated functions. An immobilized format can simplify enzyme removal from reaction mixtures and support cleaner downstream analysis.\u003c\/p\u003e\u003cp\u003ePapain is a nonspecific, cysteine-endopeptidase isolated from papaya latex that is used in a wide variety of applications.\u003c\/p\u003e \u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eAntibody engineering and characterization workflows that compare full-length antibodies with fragment formats.\u003c\/li\u003e \u003cli\u003eMethod development for controlled proteolysis and fragment mapping in protein analytics (RUO).\u003c\/li\u003e \u003cli\u003eImmobilized-enzyme formats in bioprocessing and analytical sample prep to improve reproducibility and cleanup.\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eCommon research applications\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eConceptual use in antibody fragmentation studies (Fab vs Fc functional dissection) without prescribing specific conditions.\u003c\/li\u003e \u003cli\u003eGeneral proteolysis tool in protein chemistry method development and substrate profiling.\u003c\/li\u003e \u003cli\u003eBenchmark reagent when evaluating immobilized-enzyme performance in downstream analytics.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eUse changes in abundance, binding, or activity readouts as context-dependent signals. In many systems, differences may reflect regulation, compartment shifts, complex formation, or sample-matrix effects rather than a single direct mechanism.\u003c\/p\u003e \u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eProteolysis outcomes depend on substrate sequence\/structure and reaction conditions; verify fragment identity with orthogonal methods.\u003c\/li\u003e \u003cli\u003eImmobilization can alter apparent activity and accessibility; interpret rates and yields relative to free-enzyme benchmarks.\u003c\/li\u003e \u003cli\u003eAvoid extrapolating digestion performance across antibody subclasses without confirmatory characterization.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- Sources (internal): - UniProt: https:\/\/www.uniprot.org\/uniprotkb?query=papain immobilized antibody fragmentation Fab Fc - NCBI Gene: https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=papain immobilized antibody fragmentation Fab Fc - PubMed: https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=papain immobilized antibody fragmentation Fab Fc%20review --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"5000 UN","offer_id":53052975972717,"sku":"CSB-NP005501Pl-5000UN","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-NP005501Pl-SDS.jpg?v=1772166487","url":"https:\/\/www.ebiohippo.com\/products\/immobilized-papain-bhp10506620","provider":"BioHippo","version":"1.0","type":"link"}