MCE 的所有产品仅用作科学研究或药证申报，我们不为任何个人用途提供产品和服务。

Sulfo-Cy7.5 maleimide

CAS No. :

MCE 国际站：Sulfo-Cy7.5 maleimide

产品活性：Sulfo-Cy7.5 maleimide 是一种 CY 染料。CY 为花菁 (Cyanine) 的缩写，是由奇数个甲基单位连接的两个氮原子组成的化合物。菁类化合物具有波长长、吸收和发射可调、消光系数高、水溶性好、合成相对简单等特点。CY 系类染料常被用于蛋白，抗体以及小分子化合物的标记，对于蛋白抗体的标记，可以通过简单的混合反应来完成结合，以下我们介绍了蛋白抗体标记的标记方法，具有一定的参考意义。

研究领域：Others

作用靶点：Fluorescent Dye

In Vitro: Protocol
1.Protein Preparetion
1) In order to obtain the best labeling effect, please prepare the protein (antibody) concentration as 2 mg/mL.
2) The pH value of protein solution shall be 8.5±0.5. If the pH is lower than 8.0, 1 M sodium bicarbonate shall be used for adjustment.
3) If the protein concentration is lower than 2 mg/mL, the labeling efficiency will be greatly reduced. In order to obtain the best labeling efficiency, it is recommended that the final protein concentration range is 2-10 mg/mL.
4) The protein must be in the buffer without primary amine (such as Tris or glycine) and ammonium ion, otherwise the labeling efficiency will be affected.
2.Dye Preparation (Example for CY3-NHS ester)
Add anhydrous DMSO into the vial of CY3-NHS ester to make a 10 mM stock solution. Mix well by pipetting or vortex.
3.Calculation of dye dosage
The amount of CY3-NHS ester required for reaction depends on the amount of protein to be labeled, and the optimal molar ratio of CY3-NHS ester to protein is about 10.
Example: assuming the required marker protein is 500 μL 2 mg/mL IgG (MW=150,000), use 100 μL DMSO dissolve 1 mg CY3-NHS ester, the required CY3-NHS ester volume is 5.05 μL, and the detailed calculation process is as follows:
1) mmol (IgG) = mg/mL (IgG) ×mL (IgG) / MW (IgG) =2 mg/mL × 0.5 mL / 150,000 mg/mmol= 6.7×10-6 mmol
2) mmol (CY3-NHS ester) = mmol (IgG) × 10 = 6.7×10-6 mmol×10 = 6.7 × 10-5 mmol
3) μL (CY3-NHS ester) = mmol (CY3-NHS ester) ×MW (CY3-NHS ester) / mg/μL (CY3-NHS ester) = 6.7 ×10-5 mmol ×753.88 mg/mmol / 0.01 mg/μL = 5.05 μL (CY3-NHS ester)
4.Run conjugation reaction
1) A good volume of freshly prepared 10 mg/mL CY3-NHS ester is slowly added to 0.5 mL protein sample
In solution, gently shake to mix, then centrifuge briefly to collect the sample at the bottom of the reaction tube. Don'tmix well to prevent protein samples from denaturation and inactivation.
2) The reaction tubules were placed in a dark place and incubated gently at room temperature for 60 minutes at intervals.For 10-15 minutes, gently reverse the reaction tubules several times to fully mix the two reactants and raise the bar efficiency.
5.Purify the conjugation
The following protocol is an example of dye-protein conjugate purification by using a SepHadex G-25 column.
1) Prepare SepHadex G-25 column according to the manufacture instruction.
2) Load the reaction mixture (From "Run conjugation reaction") to the top of the SepHadex G-25 column.
3) Add PBS (pH 7.2-7.4) as soon as the sample runs just below the top resin surface.
4) Add more PBS (pH 7.2-7.4) to the desired sample to complete the column purification. Combine the fractions that contain the desired dye-protein conjugate.

相关产品：MeOSuc-Ala-Ala-Pro-Val-pNA  |  BDP 558/568 amine  |  AC-green  |  Naphthalene-1,2-dicarbaldehyde  |  Rhodamine 800  |  Vari Fluor 532 SE  |  Acridine Orange hydrochloride  |  N-(7-Nitrobenzofurazan-4-yl)phallacidin  |  Biotin-11-UTP  |  BODIPY FL SSE  |  1,2-Diamino-3,4-ethylenedioxybenzene  |  Sulfo-CY-5.5 NHS ester tripotassium  |  BODIPY 505/515  |  3-Acetylumbelliferyl β-D-Glucopyranoside  |  Ac-DNLD-AMC  |  Mucicarmine  |  7-Aminocoumarin  |  NEP  |  Sulfo-cyanine3 azide sodium  |  Dihydrorhodamine 123  |  ATTO 594 azide  |  Allophycocyanin  |  ATTO 514 maleimid  |  N-Acryloyl-1-pyrenebutylamine  |  TSPP tetrasodium  |  Citrazinic acid  |  Dabcyl acid  |  7-Diethylamino-4-methylcoumarin  |  9-(2-Carboxy-2-cyanovinyl)julolidine  |  ATTO 680 azide

热门产品线：重组蛋白  |  化合物库  |  天然产物  |  荧光染料  |  PROTAC  |  同位素标记物  |  寡核苷酸  |  抗体  |  点击化学

Trending products：Recombinant Proteins  |  Bioactive Screening Libraries  |  Natural Products  |  Fluorescent Dye  |  PROTAC  |  Isotope-Labeled Compounds  |  Oligonucleotides  |  Antibodies  |  Click Chemistry

品牌介绍:
•   MCE (MedChemExpress) 拥有200 多种全球独家化合物库，我们致力于为全球科研客户提供前沿最全的高品质小分子活性化合物；
•   50,000 多种高选择性抑制剂、激动剂涉及各热门信号通路及疾病领；
•   产品种类涵盖各种重组蛋白，多肽，常用试剂盒 ，更有 PROTAC、ADC 等特色产品，广泛应用于新药研发、生命科学等科研项目；
•   提供虚拟筛选，离子通道筛选，代谢组学分析检测分析，药物筛选等专业技术服务；
•   设有专业的实验中心和严格的质控、验证体系；
•   提供 LC/MS、NMR、HPLC、手性分析、元素分析等各项质检报告，确保产品的高纯度、高品质；
•   产品的生物活性多经各国客户实验验证；
•   Nature, Cell, Science 等多种顶级期刊及制药专利收录了MCE客户的科研成果；
•   专业团队跟踪最新的制药及生命科学研究进展，为您提供全球最新的活性化合物；
•   与世界各大制药公司及知名科研机构建立了长期的合作。