{"product_id":"recombinant-escherichia-coli-murein-tetrapeptide-carboxypeptidase-ldca-bhp10504171","title":"Recombinant Escherichia coli Murein tetrapeptide carboxypeptidase (ldcA)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eRecombinant Escherichia coli Murein tetrapeptide carboxypeptidase (ldcA) is a recombinant protein reagent for research-use applications such as assay development, binding studies, and mechanistic experiments. It corresponds to \u003cstrong\u003eldcA\u003c\/strong\u003e (Escherichia coli (strain K12)) and is intended for RUO workflows where a defined protein standard or functional input is needed.\u003c\/p\u003e\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression system:\u003c\/strong\u003e E.coli (expression context can influence folding and PTMs).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression region:\u003c\/strong\u003e 1-304aa (region choice can affect activity and binding readouts).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConjugate(s)\/tag:\u003c\/strong\u003e N-terminal 6xHis-tagged (can support detection or purification depending on format).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular weight:\u003c\/strong\u003e 37.6 kDa (useful for interpreting gel migration and size-exclusion profiles).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen comparing results across assays, consider that expression system and expressed region can alter glycosylation, disulfide formation, and oligomerization state, which may shift apparent potency or binding behavior in vitro.\u003c\/p\u003e\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cp\u003eReleases the terminal D-alanine residue from the Cytoplasmic domain tetrapeptide recycling product L-Ala-gamma-D-Glu-meso-Dap-D-Ala. To a lesser extent, can also cleave D-Ala from murein derivatives containing the tetrapeptide, i.e. MurNAc-tetrapeptide, UDP-MurNAc-tetrapeptide, GlcNAc-MurNAc-tetrapeptide, and GlcNAc-anhMurNAc-tetrapeptide. Does not act on murein sacculi or cross-linked muropeptides. The tripeptides produced by the LcdA reaction can then be reused as peptidoglycan building blocks; LcdA is thereby involved in murein recycling. Is also essential for viability during stationary phase.\u003c\/p\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReagent standardization: using recombinant proteins as reference materials for quantitative calibration and cross-study comparability.\u003c\/li\u003e\n\u003cli\u003eInteraction-focused studies: mapping binding partners, affinity changes, and structure–function relationships across variants or domains.\u003c\/li\u003e\n\u003cli\u003eMulti-omic readouts: combining recombinant perturbations with transcript, protein, and functional endpoints to connect mechanism to phenotype.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAssay development and validation: use as a defined input or standard where protein identity is required.\u003c\/li\u003e\n\u003cli\u003eBinding studies: evaluate interaction strength and specificity using plate-based or biophysical formats.\u003c\/li\u003e\n\u003cli\u003eCell-response profiling: add protein to cultured cells and interpret downstream marker changes with appropriate controls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInterpretation is most robust when signal changes are evaluated relative to matched controls (buffer-only, unrelated protein controls, or pathway controls) and when readouts are compared across dose and time.\u003c\/p\u003e\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIsoforms and PTMs can influence binding and activity; ensure the expressed region and expression system match your experimental needs.\u003c\/li\u003e\n\u003cli\u003eSpecies differences may affect receptor binding or antibody recognition; confirm species\/source alignment with your model.\u003c\/li\u003e\n\u003cli\u003eUse concept-level controls such as negative controls (no protein), matrix controls, or orthogonal readouts to support conclusions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c!-- Sources (internal): - UniProt keyword search: https:\/\/www.uniprot.org\/uniprotkb?query=ldcA - NCBI Gene search: https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=ldcA - PubMed search: https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=ldcA - Ensembl search: https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=ldcA - Reactome Pathway Browser: https:\/\/reactome.org\/content\/query?q=ldcA --\u003e","brand":"CUSABIO TECHNOLOGY LLC","offers":[{"title":"1 mg","offer_id":53053047243117,"sku":"CSB-EP303469ENV-1MG","price":2466.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":53053196271981,"sku":"CSB-EP303469ENV-100UG","price":729.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":53053196304749,"sku":"CSB-EP303469ENV-20UG","price":388.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CSB-EP303469ENV-SDS.jpg?v=1772172883","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-escherichia-coli-murein-tetrapeptide-carboxypeptidase-ldca-bhp10504171","provider":"BioHippo","version":"1.0","type":"link"}