產(chǎn)品描述纖維蛋白原（Fibrinogen，F(xiàn)g），即凝血因子I，分子量約340kDa，由α、β、γ三對(duì)不同多肽鏈組成，多肽鏈間以二硫鍵相連。α鏈分子量63.5kDa，β鏈分子量56kDa，γ鏈分子量47kDa，纖維蛋白原約含4%碳水化合物。纖維蛋白原參與凝血的原理：在凝血酶作用下，α鏈與β鏈分別釋放出A肽與B肽，生成纖維蛋白單體。在此過程中，由于釋放了酸性多肽，負(fù)電性降低，單體易于聚合成纖維蛋白多聚體，但此時(shí)單體之間借氫鍵與疏水鍵相連，尚可溶于稀酸和尿素溶液中。進(jìn)一步在Ca2+與活化的ⅩⅢ因子作用下，單體之間以共價(jià)鍵相連，則變成穩(wěn)定的不溶性纖維蛋白凝塊，完成凝血過程。來源于不同物種（如來源于牛、貓、狗、豚鼠、人、綿羊、小鼠和大鼠等）的纖維蛋白原具有相似的結(jié)構(gòu)和性質(zhì)。因此，一般來源于一種哺乳動(dòng)物的纖維蛋白原可與其他來源的凝血酶交叉反應(yīng)，相反地來自一種哺乳動(dòng)物蛋白的凝血酶液也可注入多種動(dòng)物，發(fā)生凝血反應(yīng)。猴痘病毒（Monkeypox Virus, MPXV）屬于正痘病毒屬。一般來說，同屬病毒具有相似的生物學(xué)特性。Recombinant Rat KGF-2/FGF-10

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)上來說，抑肽酶是一種來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，無動(dòng)物源性的病毒污染，氨基酸序列與來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。Recombinant Human IP-10/CXCL10通過泛素-蛋白體途徑(UPP)中的酶與底物蛋白共價(jià)連接，并在26S蛋白體降解ATP依賴的細(xì)胞蛋白中發(fā)揮主要作用。

Coronavirusesarecommonlycomprisedoffourstructuralproteins:Spikeprotein(S),Envelopeprotein(E),Membraneprotein(M)andNucleocapsidprotein(N).TheSARS-CoV-2Sproteinisaglycoproteinthatmediatesmembranefusionandviralentry.TheSproteinishomotrimeric,witheach~180-kDamonomerconsistingoftwosubunits,S1andS2.TheRBDofSARS-CoV-2bindsametallopeptidase,angiotensin-convertingenzyme2(ACE-2).產(chǎn)品性質(zhì)別名SproteinRBD;SglycoproteinRBD;SpikeproteinRBDAccessionQHD43416.1表達(dá)區(qū)間及表達(dá)系統(tǒng)RecombinantSARS-CoV-2SpikeRBD(OmicronBA.4/BA.5/BA.5.1.3/BA.5.2)ProteinisexpressedfromExpi293withHistagattheC-terminal.ItcontainsArg319-Phe541(G339D,S371F,S373P,S375F,T376A,D405N,R408S,K417N,N440K,L452R,S477N,T478K,E484A,F486V,Q498R,N501Y,Y505H).

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.CX3CL1還通過募集巨噬細(xì)胞以及通過募集和介導(dǎo)破骨細(xì)胞前體的粘附而導(dǎo)致傷口愈合。

N-糖苷酶F(PNGaseF)是一種酰胺水解酶，經(jīng)過和平空間站伊麗莎菌克隆，主要由腦膜炎膿桿菌等革蘭氏陰性菌分泌。酵母重組表達(dá)N-糖苷酶F（比活性：750000U/mL），可以裂解由天冬酰胺連接的高甘露糖、雜合和復(fù)雜的寡糖糖蛋白。PNGaseF的切割位點(diǎn)為糖蛋白內(nèi)側(cè)N-乙酰葡萄糖胺（GlcNAc）和天冬酰氨殘基之間的酰胺鍵，同時(shí)將酶解后蛋白上的天冬氨酰轉(zhuǎn)化為天冬氨酸。本產(chǎn)品帶his標(biāo)簽，常應(yīng)用于抗體及其相關(guān)蛋白完全去糖基化。另外，我司還提供其他類型的糖苷酶，包括酵母重組表達(dá)的N-糖苷酶F，糖苷內(nèi)切酶H，糖苷內(nèi)切酶S。產(chǎn)品信息產(chǎn)品性質(zhì)中文別名（Chinesesynonym）N-糖酰胺酶F；N-糖苷酶F英文別名（Englishsynonym）PNGaseF來源（Source）酵母重組表達(dá)分子量（Molecularweight）36kDa比活性（Specificactivity）750000U/mL緩沖液組分（Buffer）20mMTris-HClpH7.5,50mMNaCl,5mMEDTA,50%Glycerol凝血酶是由大小分別為31 KD和6 KD的兩條肽鏈通過二硫鍵組成的一種絲氨酸蛋白水解酶。BAM-22P

Kex2不能識(shí)別和切割單一堿性氨基酸即精氨酸或賴氨酸的羧基端肽鍵。Recombinant Rat KGF-2/FGF-10

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 Rat KGF-2/FGF-10