Alexa Fluor™ 488 羟胺
Alexa Fluor™ 488 羟胺
Invitrogen™

Alexa Fluor™ 488 羟胺

Alexa Fluor™ 488 羟胺是一种有用的细胞示踪剂,也是一种用于标记多糖或糖蛋白中醛或酮的有用的反应性染料。Alexa Fluor™ 488 是一种明亮的绿色荧光染料,其激发光谱非常适合于 488 nm了解更多信息
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货号数量
A30629
又称 A-30629
1 mg
货号 A30629
又称 A-30629
价格(CNY)
12,364.00
Each
添加至购物车
数量:
1 mg
价格(CNY)
12,364.00
Each
添加至购物车
Alexa Fluor™ 488 羟胺是一种有用的细胞示踪剂,也是一种用于标记多糖或糖蛋白中醛或酮的有用的反应性染料。Alexa Fluor™ 488 是一种明亮的绿色荧光染料,其激发光谱非常适合于 488 nm 激光谱线。Alexa Fluor™ 488 染料用于成像和流式细胞分析中稳定信号的生成,具有水溶性和 pH 值不敏感性(pH 值 4 - pH 值 10)。除反应性染料配方外,我们还提供可与多种抗体、肽、蛋白、示踪剂和扩增底物偶联并且针对细胞标记和检测进行优化的 Alexa Fluor™ 488 染料(了解更多信息)。

关于该 AlexaFluor™ 羟胺的详细信息:

•荧光基团标记:Alexa Fluor™ 488 染料
• 反应性基团:羟胺
• 反应性:醛或酮
• 偶联物的 Ex/Em:494/518 nm
• 消光系数:77,000 cm-1M-1
• 光谱相似染料:FITC、GFP
•分子量:895.07

细胞示踪和示踪应用
Alexa Fluor™ 酰肼和羟胺可用作低分子量、膜不可透过性、醛活化固定细胞示踪剂,具有比其他光谱相似荧光基团产生的细胞示踪剂更明亮的荧光和更高的光稳定性。它们可通过显微注射、从膜片移液管注入或通过我们的 Influx™ 胞饮细胞上样试剂所诱导的摄取进入细胞了解更多有关细胞追踪和示踪的信息

糖蛋白和多糖标记应用
Alexa Fluor™ 酰肼和羟胺是反应性分子,可用于向含有醛或酮的生物分子添加荧光标记。醛和酮可通过高碘酸盐介导的邻二醇氧化而引入多糖和糖蛋白中。半乳糖氧化酶也可用于将糖蛋白的末端半乳糖残基氧化为醛。

酰肼与羟胺
肼衍生物与酮和醛反应从而生成相对稳定的腙。羟胺衍生物(氨基氧基化合物)与醛和酮反应生成肟。肟的水解稳定性优于腙。使用硼氢化钠 (NaBH4) 可以还原腙和肟,以进一步提高键的稳定性。

了解有关蛋白和抗体标记的更多信息
我们可提供多种可供选择的 Molecular Probes ™ 抗体和蛋白标记试剂盒,以适应您的起始料和实验设置。参见我们的抗体标记试剂盒或使用我们的标记化学选择工具进行其他选择。欲了解有关我们标记试剂盒的更多信息,请参阅 Molecular Probes™ 手册中第 1.2 节—蛋白和核酸标记试剂盒

我们还’可为您定制偶联物
如果您’无法在我们的在线目录中找到’想要的产品,我们还’可为您定制抗体或蛋白偶联物。我们的定制偶联服务是高效和保密的,我们保证我们的工作质量。我们经过 ISO 9001:2000 认证。

相关产品
DMSO(二甲亚砜)(D12345)
0.5-1 mg 用抗体偶联物纯化试剂盒 (A33086)
20-50 µg 用抗体偶联物纯化试剂盒 (A33087)
50-100 µg 用抗体偶联物纯化试剂盒 (A33088)
仅供科研使用。不可用于诊断程序。
规格
化学反应性羧酸、酮、醛
激发494 nm
标签或染料Alexa Fluor™ 488
产品类型羟胺
数量1 mg
反应一部分胺、羟胺
运输条件室温
标签类型Alexa Fluor 染料
产品线Alexa Fluor
Unit SizeEach
内容与储存
储存在冰箱(-5 至 -30°C)中并避光。

引用和文献 (14)

引用和文献
Abstract
Optical properties of Alexa 488 and Cy5 immobilized on a glass surface.
Authors:Wang L, Gaigalas AK, Reipa V
Journal:Biotechniques
PubMed ID:15679095
'The absorption and emission spectra were measured for Cy5 and Alexa 488 fluorophores confined on a glass surface. The data were obtained using fluorometry and spectroscopic ellipsometry. Red shifts of the surface-immobilized fluorophore absorption spectra relative to the fluorophore spectra in aqueous solution were observed using both methods. We interpret ... More
Multiple site-specific in vitro labeling of single-chain antibody.
Authors:Ramakrishnan B, Boeggeman E, Manzoni M, Zhu Z, Loomis K, Puri A, Dimitrov DS, Qasba PK,
Journal:Bioconjug Chem
PubMed ID:19507852
'For multiple site-specific conjugations of bioactive molecules to a single-chain antibody (scFv) molecule, we have constructed a human anti HER2 receptor, scFv, with a C-terminal fusion polypeptide containing 1, 3, or 17 threonine (Thr) residues. The C-terminal extended fusion polypeptides of these recombinant scFv fusion proteins are used as the ... More
A general and efficient method for the site-specific dual-labeling of proteins for single molecule fluorescence resonance energy transfer.
Authors:Brustad EM, Lemke EA, Schultz PG, Deniz AA,
Journal:J Am Chem Soc
PubMed ID:19108697
'A general strategy for the site-specific dual-labeling of proteins for single-molecule fluorescence resonance energy transfer is presented. A genetically encoded unnatural ketone amino acid was labeled with a hydroxylamine-containing fluorophore with high yield (>95%) and specificity. This methodology was used to construct dual-labeled T4 lysozyme variants, allowing the study of ... More
Site-specific chemical modification of recombinant proteins produced in mammalian cells by using the genetically encoded aldehyde tag.
Authors:Wu P, Shui W, Carlson BL, Hu N, Rabuka D, Lee J, Bertozzi CR,
Journal:Proc Natl Acad Sci U S A
PubMed ID:19202059
'The properties of therapeutic proteins can be enhanced by chemical modification. Methods for site-specific protein conjugation are critical to such efforts. Here, we demonstrate that recombinant proteins expressed in mammalian cells can be site-specifically modified by using a genetically encoded aldehyde tag. We introduced the peptide sequence recognized by the ... More
Detection of labeled abasic sites in damaged DNA by capillary electrophoresis with laser-induced fluorescence.
Authors:Fundador E, Rusling J
Journal:Anal Bioanal Chem
PubMed ID:17206410
'Removal of nucleobases from the DNA backbone leads to the formation of abasic sites. The rate of abasic site formation is significantly increased for chemically damaged nucleobases. Thus, abasic sites serve as general biomarkers for the quantification of DNA damage. Herein, we show that capillary electrophoresis with laser-induced fluorescence (CE-LIF) ... More