{"product_id":"e-coli-d-alanine-d-alanine-ligase-assay-kit-plus-bht16300034","title":"E. coli D-Alanine:D-Alanine Ligase Assay Kit Plus","description":"\u003cstyle\u003e.bhp-desc{font-size:16px;color:#1a1a1a;line-height:1.7}.bhp-desc h2{font-size:18px;font-weight:700;color:#003366;margin:24px 0 10px;padding-bottom:6px;border-bottom:2px solid #003366}.bhp-desc p{margin:0 0 12px}.bhp-desc .bhp-spec-table{width:100%;border-collapse:collapse;margin:12px 0 18px}.bhp-desc .bhp-spec-table th{text-align:left;padding:8px 12px;background:#e8f0fb;color:#003366;font-weight:600;vertical-align:top;border:1px solid #ccd9f0}.bhp-desc .bhp-spec-table td{padding:8px 12px;vertical-align:top;border:1px solid #ccd9f0}.bhp-desc .bhp-warning-box{background:#fff8e6;border-left:4px solid #e6a817;padding:10px 14px;margin:10px 0 14px;border-radius:0 4px 4px 0}.bhp-desc .bhp-cat-pill{display:inline-block;background:#003366;color:#fff;border-radius:20px;padding:3px 12px;font-size:13px;margin-bottom:10px}.bhp-desc ol,.bhp-desc ul{margin:0 0 12px 20px}\u003c\/style\u003e\u003cdiv class=\"bhp-desc\"\u003e\n\u003cspan class=\"bhp-cat-pill\"\u003eDrug Target Assay Kit\u003c\/span\u003e\u003cp\u003eThe dipeptide D-Ala-D-Ala is a building block for bacterial peptidoglycan. D-Alanine:D-Alanine ligase (Ddl) makes it by joining two D-Alanine molecules, and this step is linked to ATP hydrolysis, which releases ADP and inorganic phosphate.\u003c\/p\u003e\n\u003ch2\u003ePack Sizes\u003c\/h2\u003e\n\u003cp\u003eBoth pack sizes include the E. coli D-Ala:D-Ala ligase. The only difference is the number of assays: DDA100KE provides reagents for 100 assays and DDA500KE for 500 assays (384-well format), with component volumes scaled accordingly.\u003c\/p\u003e\n\u003ctable class=\"bhp-spec-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003e100 assays (DDA100KE)\u003c\/th\u003e\n\u003ctd\u003e100 assays; enzyme included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e500 assays (DDA500KE)\u003c\/th\u003e\n\u003ctd\u003e500 assays; enzyme included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eKit Components\u003c\/h2\u003e\n\u003ctable class=\"bhp-spec-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003e100 assays (DDA100KE)\u003c\/th\u003e\n\u003cth\u003e500 assays (DDA500KE)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 x Buffer\u003c\/td\u003e\n\u003ctd\u003e400 µl\u003c\/td\u003e\n\u003ctd\u003e2 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 x Enzyme Substrate\u003c\/td\u003e\n\u003ctd\u003e35 µl\u003c\/td\u003e\n\u003ctd\u003e170 µl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 x E. coli D-Ala:D-Ala ligase (200 nM)\u003c\/td\u003e\n\u003ctd\u003e35 µl\u003c\/td\u003e\n\u003ctd\u003e170 µl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphate detection dye (also sold separately as MicroMolar Phosphate Assay Reagent, BHT16300173)\u003c\/td\u003e\n\u003ctd\u003e5 ml\u003c\/td\u003e\n\u003ctd\u003e25 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAssay Principle\u003c\/h2\u003e\n\u003cp\u003eThe kit measures the inorganic phosphate generated by the ligation reaction with a phosphate detection dye; absorbance at 650 nm is proportional to ligase activity, so inhibitors reduce the signal.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"bhp-spec-table\"\u003e\n\u003ctr\u003e\n\u003cth\u003eAssay Target\u003c\/th\u003e\n\u003ctd\u003eE. coli D-Ala:D-Ala ligase activity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTarget Type\u003c\/th\u003e\n\u003ctd\u003eLigase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrganism\u003c\/th\u003e\n\u003ctd\u003eE. coli\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAssay Type\u003c\/th\u003e\n\u003ctd\u003eEnzyme Activity Assay; Inhibitor Screening Assay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDetection Method\u003c\/th\u003e\n\u003ctd\u003eColorimetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDetection Wavelength\u003c\/th\u003e\n\u003ctd\u003eAbsorbance 650 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlate Format\u003c\/th\u003e\n\u003ctd\u003e384\/96-well plate or cuvette\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstrument Required\u003c\/th\u003e\n\u003ctd\u003ePlate reader or spectrophotometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAssay Time\u003c\/th\u003e\n\u003ctd\u003eAbout 65 min (60 min reaction + 5 min detection)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e100 assays, 500 assays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003ePlease contact us to confirm storage conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping\u003c\/th\u003e\n\u003ctd\u003eShipped frozen.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eProtocol\u003c\/h2\u003e\n\u003cp\u003eThe manufacturer's protocol describes the procedure and reaction volumes.\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eE. coli D-Alanine D-Alanine Ligase Assay (PDF, see Documents): Covers catalog # DDA100KE.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eSafety \u0026amp; Handling\u003c\/h2\u003e\n\u003cdiv class=\"bhp-warning-box\"\u003eFor Research Use Only (RUO). Not for use in diagnostic or therapeutic procedures. The E. coli D-Alanine:D-Alanine Ligase Assay Kit Plus is shipped frozen. Follow standard laboratory safety practices when handling the reagents. Please contact us to confirm storage conditions.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ProFoldin","offers":[{"title":"100 assays","offer_id":67794877383021,"sku":"DDA100KE","price":829.0,"currency_code":"USD","in_stock":true},{"title":"500 assays","offer_id":67794883641709,"sku":"DDA500KE","price":2644.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/D-ala_ligase_copy.jpg?v=1792791969","url":"https:\/\/www.ebiohippo.com\/products\/e-coli-d-alanine-d-alanine-ligase-assay-kit-plus-bht16300034","provider":"BioHippo","version":"1.0","type":"link"}