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Prospec/Urease/ENZ-277/5mg

价格
¥2600.00
货号:ENZ-277
浏览量:127
品牌:Prospec
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商品描述

Cataloguenumber

ENZ-277

Description

Urease(EC3.5.1.5)isanenzymethatcatalyzesthehydrolysisofureaintocarbondioxideandammonia.Thereactionoccursasfollows:(NH2)2CO+H2O=CO2+2NH3.In1926JamesSumnershowedthatureaseisaprotein.Ureaseisfoundinbacteria,yeastandseveralhigherplants.Characteristics:Activesitemetal:nickel(II);Molecularweight:480kDaor545kDaforJackBeanUrease(calculatedmassfromtheaminoacidsequence);OptimumpH:7.4;OptimumTemperature:60degreesCelsius;Enzymaticspecificity:urea;Inhibitors:heavymetals.Themulti-subunitenzymeusuallyhasa3:3(alpha:beta)stoichiometrywitha2-foldsymmetricstructure(notethattheimageabovegivesthestructureoftheasymmetricunit,onethirdofthetrueBIOLOGicalassembly).AnexceptionalureaseisfoundinHelicobacterpylori,whichcombinesfouroftheregularsixsubunitenzymesinanoveralltetrahedralassemblyof24subunits(a12b12).Thissupra-molecularassemblyisthoughttoconferadditionalstABIlityfortheenzymeinthisorganism,whichfunctionstoproduceammoniainordertoneutralisegastricacid.ThepresenceofureaseisusedinthediagnosisofHelicobacterspecies.

Source

EscherichiaColi.

PhysicalAppearance

SterileLyophilizedPowder.

Formulation

Eachmgofproteincontains420µgPotassiumPhosphateand30µgEDTANa2.

Solubility

ItisrecommendedtoreconstitutethelyophilizedUreaseinsterile18MΩ-cmH2O.

Stability

Ureasealthoughstableat4°Cfor3weeks,shouldbestoreddesiccatedbelow-18°C.
Pleasepreventfreeze-thawcycles.

Purity

Greaterthan95.0%asdeterminedby:
(a)AnalysisbyRP-HPLC.
(b)AnalysisbySDS-PAGE.

BiologicalActivity

Theactivitywasfoundtobe141U/mgpowder.

UnitDefinition

OneUnitoxidizesonemicromoleofNADHperminuteat25°C,atpH7.6.

Usage

Prospec"sproductsarefurnishedforLABORATORYRESEARCHUSEONLY.Theproductmaynotbeusedasdrugs,agriculturalorpesticidalproducts,foodadditivesorhouseholdchemicals.
ProSpec是全球著名细胞因子蛋白及相关抗体生产和研发品牌,专注于蛋白生产研发,独有细菌和哺乳动物表达和蛋白折叠技术。目前可提供细胞因子、生长因子、激素、信号蛋白、病毒抗原等近800种重组蛋白和100多种抗体。 ProSpec is an evolving biotech company providing highly purified proteins worldwide which serve the research community with cytokine-related products for cancer, apoptosis, development, endocrinology, immunology, neuroscience, proteases, and stem cell research. Among our proteins are Interferons, Interleukins, Bone Morphogenic Proteins, Tumor Necrosis factors, Leptins, Stem Cell factors, Prolactins, Chemokines, Antibodies, Peptides, Enzymes, Viral Antigens, various growth factors such as: Platelet Derived, Epidermal, Insulin Like, Nerve, Connective Tissue, Vascular Endothelial, Fibroblast and more..... 产品列表: No. 品牌 货号 名称 规格 1 ProSpec PRO-1574 BCL2 Human 5µg 2 ProSpec CYT-1075 IFNA7 Human, Sf9 2µg 3 ProSpec CHM-328 Rantes Human 5µg 4 ProSpec CHM-330 IP 10 Human 5µg 5 ProSpec CYT-575 MIF Human 5µg 6 ProSpec CYT-538 GH Antagonist Chicken 20µg 7 ProSpec CYT-1043 TNFRSF10A Human 2µg 8 ProSpec PRO-2390 CD2 Human, Sf9 2µg 9 ProSpec PRO-2237 CD47 Human 2µg 10 ProSpec CYT-581 Beta NGF Mouse 5µg 11 ProSpec CYT-973 NRP1 Rat 1µg 12 ProSpec HOR-253 FSH Human 2µg 13 ProSpec HOR-275 Thymosin beta 4 1mg 14 ProSpec DEN-005 Dengue Envelope-1 22kDa 100µg 15 ProSpec HEV-235 HEV Mosaic 100µg