重组型TEV蛋白酶(rTEV)是经过基因工程改造和纯化后的重组蛋白酶,不仅保持天然TEV酶的功能活性,且在广谱的温度范围内表现出更强的稳定性和特异性。rTEV是一种用来切除融合蛋白上亲和标签的常用工具酶,具有很强的位点特异性,严格识别七氨基酸序列EXXYXQ↓(G/S),切割位点在谷氨酰胺和甘氨酸/丝氨酸之间。普遍应用的七氨基酸序列为:Glu-Asn-Leu-Tyr-Phe-Gln↓-Gly。rTEV在pH7.0,30℃时可达活性,但在pH6.0-8.5和温度4-30℃范围内皆有活性(见表1),使得反应条件的选择可根据目的蛋白的情况而灵活变动。另外rTEV切割后也能利用其N端的6×His标签,通过Ni-NTA树脂去除,以达到纯化目的蛋白的目的。产品性质来源(Source)大肠杆菌外观(Appearance)无色透明液体比活力(SpecificActivity)5U/μL活性定义(UnitDefinition)在1×rTEVBuffer(50mMTris,pH8.0,0.1mMEDTA,1mMDTT)中,30℃反应1h,剪切>85%的3μg底物所需要的酶量定义为一个活性单位。纯化(Purification)Ni柱亲和纯化纯度(Purity)≥95%(bySDS-PAGE)产品组分运输与保存方法冰袋运输。甲磺酸达比加群酯是一种抗凝药,通过竞争结合凝血酶的纤维蛋白特异结合位点,从而抑制血栓的形成。Recombinant Rat GFRAL/GFR alpha-like Protein,His Tag
Recombinant Biotinylated Cynomolgus Siglec-10 Protein,His-Avi Tag性能参数分子别名(Synonyms)SLG2;SIGLEC10;MGC126774;PRO940表达区间及表达系统(Source)BiotinylatedCynomolgusSiglec-10ProteinisexpressedfromHEK293withHistagandAvitagattheC-terminus.ItcontainsThr17-Asn552.[Accession|A0A2K5WBX8]分子量大小(MolecularWeight)TheproteinhasapredictedMWof61.71kDa.Duetoglycosylation,theproteinmigratesto72-82kDabasedonSDS-PAGEresult.(Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedbySDS-PAGE制剂(Formulation)Suppliedas0.22μmfilteredsolutionin25mMMES,150mMNaCl,0.5MArginine(pH5.0).储存条件Theproductshouldbestoredat-85~-65℃for1yearfromdateofreceipt.Recommendtoaliquottheproteinintosmallerquantitieswhenfirstusedandavoidrepeatedfreeze-thawcycles.Recombinant Rat GFRAL/GFR alpha-like Protein,His Tag猴痘病毒A30蛋白是病毒进入宿主与细胞-细胞融合过程中所需的包膜蛋白,被认为是猴痘病毒研究中的重要靶点。
Recombinant Biotinylated Human MSLN/Mesothelin Protein,hFc-Avi Tag分子别名(Synonyms)Mesothelin;CAK1;MSLN;MPFSMRP表达区间及表达系统(Source)BiotinylatedHumanMSLN/MesothelinProteinisexpressedfromHEK293withhFctagandAvitagattheC-Terminus.ItcontainsGlu296-Gly580.[Accession|Q13421-2]分子量大小(MolecularWeight)TheproteinhasapredictedMWof61.1kDa.Duetoglycosylation,theproteinmigratesto70-80kDabasedonSDS-PAGEresult.(Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedbySDS-PAGEandHPLC.活性(Activity)ELISAData:ImmobilizedAnti-MSLNAntibody,hFcTagat1μg/ml(100μl/well)ontheplate.DoseresponsecurveforBiotinylatedHumanMSLN,hFcTagwiththeEC50of18.4ng/mldeterminedbyELISA.
SARS-CoV-2,whichcausestheglobalpandemiccoronavirusdisease2019(Covid-19),belongstoafamilyofvirusesknownascoronaviruses.TheSARS-CoV-2Sproteinisaglycoproteinthatmediatesmembranefusionandviralentry.TheRBDofSARS-CoV-2bindsametallopeptidase,angiotensin-convertingenzyme2(ACE-2).SeveralemergingSARS-CoV-2genomeshavebeenidentifiedincludingtheOmicron,orB.1.1.529,variant.FirstidentifiedinNovember2021inSouthAfrica,theOmicronvariantquicklybecamethepredominantSARS-CoV-2variantandisconsideredavariantofconcern(VOC).TheOmicronvariantcontains15mutationsinRBDdomainthatpotentiallyaffectviralfitnessandtransmissibility.ThemajorityofthemutationsareinvolvedinACE-2bindingandOmicronbindsACE-2withgreateraffinity,potentiallyexplainingitsincreasedtransmissibility.Severalofthesemutationsarealsoidentifiedinfacilitatingimmuneescapeandreducingneutralizationactivitytoseveralmonoclonalantibodies.α-凝血酶(α-Thrombin)是一种高度特异性的丝氨酸蛋白酶,由凝血酶原经蛋白水解活化而来。
IdeS Protease全称免疫球蛋白G降解酶,酶活(Enzymeactivity)40U/μL酶活定义(UnitDefinition)在37℃条件下,反应30min,剪切>95%的1μg重组单克隆IgG所需要的酶量定义为一个活性单位。储存条件-25~-15℃保存,有效期1年。使用方法1.在消化液中加入适量IgG(加至5mg);2.在IgG样本中加入IdeS蛋白酶(每1μgIgG加入1个单位的IdeS);3.将样品置于37℃孵育30-60min。IdeS蛋白酶在中性pH或接近中性pH的缓冲中活性强。推荐反应缓冲是50mM磷酸钠,150mMNaCl(pH6.6),多数常见的生物缓冲也适用,比如Tris或PBS;注意:不在此pH范围(例如乙酸盐缓冲液)的缓冲也可能适用,但是孵育时间或酶量需要根据实际情况进行优化。注意事项1.IdeS不能识别切割小鼠IgG1/IgG2b,大鼠、猪、牛和山羊IgG,对小鼠IgG2a和IgG3具有中等酶切活性,酶切小鼠IgG2a和IgG3建议增加IdeS的用量(推荐用量为正常用量的5-10倍)。2.IdeS不能切割非IgG亚型的单抗分子,包括IgA、IgM、IgD和IgE。SDF-1同工型与细胞表面上的CXCR4和CXCR7受体相互作用,也可以结合Syndecan-4。Recombinant Human sFasR/TNFRSF6
凝血酶是由大小分别为31 KD和6 KD的两条肽链通过二硫键组成的一种丝氨酸蛋白水解酶。Recombinant Rat GFRAL/GFR alpha-like Protein,His Tag
Angiotensin I Converting Enzyme (ACE-2), also called ACEH (ACE homologue), is a dimeric, zinc-dependent metalloprotease of the ACE family that also includes somatic and germinal ACE. ACE-2 mRNA is found at high levels in heart, testis, and kidney and at lower levels in a wide variety of tissues. ACE-2 is the SARS-CoV and SARS-CoV2 Spike protein receptor in vivo, functions catalytically as a carboxypeptidase to cleave several substrates including angiotensins I and II, and acts as a partner for B0AT1-family amino acid transporters. Through these functions, ACE-2 has been shown to be involved in several diseases including SARS, COVID19, acute lung injury, heart disease, liver and lung fibrosis, inflammatory lung disease, and cardiopulmonary disease . Full length ACE-2 protein includes an extracellular region composed of a single N-terminal peptidase domain and C-terminal collectrin-like domain (CLD), a transmembrane domain, and a short cytoplasmic tail. The N-terminal peptidase region is required for binding to SARS-CoV and SARS-CoV2 spike proteins, while the CLD contains a region that promotes dimerization and association with amino acid transporters.Recombinant Rat GFRAL/GFR alpha-like Protein,His Tag
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Recombinant Cynomolgus IL-1 Beta/IL-1F2 Protein
T4多聚核苷酸激酶(3'磷酸酶活性缺失)
Recombinant Mouse IGF1R/CD221 Protein
Recombinant Mouse B7-H3/CD276 Protein
Recombinant Cynomolgus SPP1/OPN Protein
Recombinant Cynomolgus CD31/PECAM-1 Protein
Recombinant Biotinylated Human Siglec-10 Protein
Recombinant Human CD19(His Tag)
Recombinant Human G-CSF R/CD114Protein
Recombinant Human ANXA1 Protein