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.透明質(zhì)酸酶，英文名稱Hyaluronidase，一類能夠降低體內(nèi)透明質(zhì)酸活性的酶的總稱，結(jié)構(gòu)上由4個(gè)相同亞基構(gòu)成。Recombinant Human SIRP alpha V5 Protein,His-Avi Tag

SARS-CoV-2, which causes the global pandemic coronavirus disease 2019 (Covid-19), belongs to a family of viruses known as coronaviruses that also include MERS?CoV and SARS-CoV-1. Coronaviruses are commonly comprised of four structural proteins: Spike protein (S), Envelope protein (E), Membrane protein (M) and Nucleocapsid protein (N). The SARS-CoV-2 S protein is a glycoprotein that mediates membrane fusion and viral entry. The S protein is homotrimeric, with each ~180-kDa monomer consisting of two subunits, S1 and S2 .The RBD of SARS-CoV-2 binds a metallopeptidase, angiotensin-converting enzyme 2 (ACE-2). Before binding to the ACE-2 receptor, structural analysis of the S1 trimer shows that only one of the three RBD domains is in the "up" conformation. This is an unstable and transient state that passes between trimeric subunits but is nevertheless an exposed state to be targeted for neutralizing antibody therapy. Polyclonal antibodies to the RBD of the SARS-CoV-2 protein have been shown to inhibit interaction with the ACE-2 receptor, confirming RBD as an attractive target for vaccinations or antiviral therapy.  Recombinant Human MD2 Protein,His Tag人血清白蛋白（HSA）是脂類等物質(zhì)的轉(zhuǎn)運(yùn)載體，其主要生理功能是調(diào)節(jié)血漿pH值和維持血漿滲透壓。

α-凝血酶（α-Thrombin）是一種高度特異性的絲氨酸蛋白酶，由凝血酶原（Prothrombin，II因子）經(jīng)蛋白水解活化而來(lái)。它在凝血過程中起著非常重要的作用，不僅能夠促使纖維蛋白凝塊的產(chǎn)生，還負(fù)責(zé)提供反饋信號(hào)來(lái)尋找前輔因子：V因子和VIII因子。也可以用作血管收縮劑。在體內(nèi)，活化的X因子（FactorXa）切割凝血酶原，釋放出活性肽并將凝血酶切割成具有催化活性的α-凝血酶。α-凝血酶由一條輕鏈（Achain）（Mw~6,000）和一條重鏈（Bchain）（Mw~31,000）通過二硫鍵連接而成。某些情況下，α-凝血酶會(huì)發(fā)生自溶生成β-凝血酶和γ-凝血酶。β-凝血酶由對(duì)α-凝血酶A鏈水解并切割含有B鏈糖基化位點(diǎn)的小片段（B1，B2）組合而成。除了用于凝血研究之外，α-凝血酶還常用來(lái)位點(diǎn)特異性切割融合蛋白?；蛑亟M時(shí)將凝血酶識(shí)別位點(diǎn)插入在目的蛋白與利于后續(xù)純化和/或表達(dá)的多肽或者蛋白之間，通過凝血酶切割表達(dá)的重組子即可釋放目的蛋白。凝血酶本身可通過親和層析技術(shù)快速去除。本品是由勻質(zhì)化的人凝血酶原經(jīng)由Xa因子，Va因子和磷脂活化而得，經(jīng)SDS-PAGE檢測(cè)確保凝血酶原的完全活化，并以NIH凝血酶的標(biāo)準(zhǔn)品為參考，提供的酶活力不少于3091NIHU/mg。

產(chǎn)品簡(jiǎn)介抑肽酶（Aprotinin），又稱為抑蛋白酶肽，是一種競(jìng)爭(zhēng)性、可逆的絲氨酸蛋白酶抑制劑，可與絲氨酸蛋白酶形成穩(wěn)定復(fù)合物并阻斷酶的活性位點(diǎn)，這種結(jié)合是可逆的，大多數(shù)的抑肽酶-蛋白酶復(fù)合物在極端的pH<3.0的條件下解除結(jié)合。抑肽酶抑制糜蛋白酶、胰蛋白酶、激肽釋放酶和血纖維蛋白溶酶，不能抑制Xa因子和凝血酶。從結(jié)構(gòu)上來(lái)說，抑肽酶是一種來(lái)自牛肺的單體球狀蛋白，由58個(gè)氨基酸組成并排列在具有三個(gè)交聯(lián)二硫鍵的單個(gè)多肽鏈中。重組抑肽酶采用大腸桿菌表達(dá)，在GMP法規(guī)下生產(chǎn)，不含任何動(dòng)物源成分，無(wú)動(dòng)物源性的病毒污染，氨基酸序列與來(lái)源于牛肺的抑肽酶完全一致，具有與動(dòng)物源性抑肽酶相同的酶學(xué)性質(zhì)，可替代動(dòng)物源性抑肽酶用于各種生物技術(shù)過程中，如：重組蛋白生產(chǎn)中抑制絲氨酸蛋白酶的活性；細(xì)胞培養(yǎng)等。另外，也提供來(lái)源于牛肺的抑肽酶（動(dòng)物源性）酶活單位：能抑制1個(gè)胰蛋白酶單位的活力稱為1個(gè)抑肽酶活力單位（EPU）。儲(chǔ)存條件凍干粉2~8℃保存，有效期2年。使用方法抑肽酶與蛋白酶是等摩爾有效結(jié)合，推薦的結(jié)合pH>6.0，在pH<3.0的條件下不結(jié)合?？芍苯邮褂?.9%NaCl溶解，溶解后可-20℃儲(chǔ)存。LAG-1與MIP-1β（ACT II同種型）相同，Lag-1趨化吸引力單核細(xì)胞，并表現(xiàn)出活性作為HIV抑制因子。

CD30活性艾利莎數(shù)據(jù):固定化抗CD30抗體,板上的氫氟碳化合物標(biāo)記為0.5歐氏/毫升(100歐氏/井)。生物化人CD30的劑量反應(yīng)曲線,以49ng/ml的EC50作為標(biāo)記。艾麗莎數(shù)據(jù):固定了人的CD30配體,他的標(biāo)簽在板上5g/ml(100ml/井)。用酶聯(lián)免疫吸附法測(cè)定人CD30的劑量反應(yīng)曲線,標(biāo)記為27.1ng/ml的EC50。產(chǎn)品用Lal法測(cè)定每一種蛋白質(zhì)。制劑在PBS(PPS)中用0.22離子過濾溶液凍干(PH7.4)。通常在凍干前添加5%海藻糖作為保護(hù)劑。復(fù)溶離心管打開前。建議重組到超過100克/毫升的濃度(凍干通常使用1毫克/毫升溶液)。在蒸餾水中溶解凍干蛋白。運(yùn)輸與保存方法冰袋運(yùn)輸。-20℃至-80℃保存，一年有效期。復(fù)溶后，-20至-80°C，在未開封狀態(tài)下保存3-6個(gè)月。復(fù)溶后，2-8°C保存2-7天。建議使用時(shí)分裝凍存，避免反復(fù)凍融。注意事項(xiàng)1.避免反復(fù)凍融。2.為了您的安全和健康，請(qǐng)穿實(shí)驗(yàn)服并戴一次性手套操作。3.本產(chǎn)品作科研用途！產(chǎn)品數(shù)據(jù)UbcH5a/UBE2D1具有一個(gè)保守的E2催化結(jié)構(gòu)域，該結(jié)構(gòu)域含有一個(gè)活性位點(diǎn)半胱氨酸殘基。Recombinant Human ANGPT2/Angiopoietin-2 (His-Avi Tag)

（CDNF）也是一種新型神經(jīng)營(yíng)養(yǎng)因子，對(duì)多巴胺能神經(jīng)元的強(qiáng)大活性，與神經(jīng)膠質(zhì)細(xì)胞系衍生的（GDNF）相當(dāng)。Recombinant Human SIRP alpha V5 Protein,His-Avi Tag

PE-labeled Human HLA-A*02:01&B2M&P53 R175H (HMTEVVRHC) Tetramer Protein,His-Avi Tag性能參數(shù)表達(dá)區(qū)間及表達(dá)系統(tǒng)（Source）PE-labeledHumanHLA-A*02:01&B2M&P53R175H(HMTEVVRHC)TetramerProteinisexpressedfromHEK293withHistagandAvitagattheC-Terminus.PE-labeledHumanHLA-A*02:01&B2M&P53R175H(HMTEVVRHC)TetramerisassembledbybiotinylatedmonomerandPE-labeledstreptavidin.ItcontainsGly25-Thr305(HLA-A*02:01),Ile21-Met119(B2M)andHMTEVVRHCpeptide.（Endotoxin）Lessthan1EUperμgbytheLALmethod.制劑（Formulation）Suppliedas0.22μmfilteredsolutionin20mMPB,500mMNaCl,0.2%BSA(pH8.0).儲(chǔ)存條件Theproductshouldbestoredat-85~-65℃for3monthfromdateofreceipt.Recommendtoaliquottheproteinintosmallerquantitieswhenfirstusedandavoidrepeatedfreeze-thawcycles.Recombinant Human SIRP alpha V5 Protein,His-Avi Tag

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