- Overview
- Data/Specifications
- Literature/Support
- How To Use
- Related Products
Overview
Type I collagen is the most abundant collagen and is found in connective tissues including tendon, ligament, dermis and blood vessel. It is the major component and the primary determinant of tensile strength of the extracelluar matrix (ECM). It is widely used as a thin layer on tissue-culture surfaces to enhance the attachment and proliferation of a variety of cells including endothelial cells, fibroblasts, hepatocytes, epithelial cells etc. In addition, collagen I can self-assemble into a 3-D superamolecular gel in vitro, making it an ideal biological scaffold to promote more in vivo-like cellular morphology and function.
Type III collagen is the second most abundant collagen in tissues and is found most commonly in tissues exhibiting elastic properties such as skin, lungs, intestinal walls and walls of blood vessels. It is a homotrimer comprised of three alpha-1 chains and resembles other fibrillar collagens in structure and function. It is synthesized as procollagen, similary to collagen I, but the N-terminal propeptide remains attached in the mature fibrillar type III form.
Symbols/Related Terms:
- COL1A1
- COL1A2
- COL3A1
- Collagen type III, alpha 1
- osteogenesis imperfecta
Data/Specifications
Purity:
Canine collagen type I and III - 98%
Canine Collagen (other types) - <1%
Non-collagen proteins - below 0.5%
Form: 10 mg lyophilized, salt-free
Purification: Partial pepsin digestion in acidic conditions and differential salt precipitation.
Source: Canine tissue. Collagen was extracted from washed dissected tissue into dilute acetic acid after pepsin treatment. Collagen type I and III were purified by using differential salt precipitation.
Reconstitution: Use 0.5 M acetic acid, pH 2.5. Dissolved collagen retains immunologic properties of native collagen. Structure of native collagen confirmed by ability to form microfibrils.
Storage:Collagen dissolved in acetic acid is stable at 4 °C for 1 month. Lyophilized collagen long term storage (2 years) at -20°C or lower.
Literature/Support
Canine Type I and III Collagen Insert (PDF)
Note: inserts are for review only. Please refer to the insert shipped with your product to ensure the most up-to-date revision is being used.
How To Use
Key Applicatons:
- Coating material for cell culture studies.
Note: May not be suitable for 3-D gel formation.
Related Products
ebiomall.com
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用酵母双杂交或是细菌双杂交？
内容发布在蚂蚁淘和螺旋网上，有兴趣的战友也可以去那里看一下。
内容分三部分：
一、概述
1、克隆性染色体异常是肿瘤的特征
2、染色体异常常见的类型
3、染色体异常的检测方法
二、荧光原位杂交及其探针
1、荧光原位杂交的原理
2、荧光原位杂交的探针
三、荧光原位杂交探针的制备和荧光原位杂交（按试验流程介绍）
:D
FISH.pdf(1237.91k)
2.腹水浓稀释于3倍体积Tris缓冲液1~5 ml/min 速度于蛋白A-Sepharose柱用Tris缓冲液洗柱直至所未结合蛋白都洗脱采用A280监测
3.依用2~3倍柱床体积柠檬酸缓冲液、乙酸缓冲液液及甘氨酸·Cl缓冲液连续洗脱结合蛋白洗脱蛋白直接接入装缓冲液管缓冲液体积应所收集蛋白体积1/4
4.采用ELISA检测抗原特异性MAb
5.超滤器浓缩所离单克隆抗体1~5mg/ml所用超滤膜XM50单克隆抗体存于-20℃
应用高通量技术进行转录组测序是一种快捷可靠的获取转录组信息的方法。mRNA的转录本表达分析，通过获得研究对象基因组转录区域的信息，鉴定转录发生位点，可变剪切等，其精确的计数方法更可对基因进行精确的定量分析。
词典
转录激
双语例句
1
Transcriptional activation and repression regulation in target gene by thyroid hormone receptors
甲状腺激素受体调节靶基转录激抑制作用
2
Objective: To assay the transcriptional activation effect of prohibitin in yeast two hybrid system.
目：检测抗增殖蛋白酵母双杂交系统否具转录自激作用
ClonExpress II One Step Cloning Kit同源重组克隆试剂盒同原理重组效率高我实验室都用克隆试剂盒基本用重复实验功推荐使用产品
普遍性：生物界中普遍存在
随机性：生物个体发育的任何时期和任何部位都有可能发生
低频性：突变频率很低
不定向性：可以产生一个以上的等位基因
多害少利性：一般是有害的少数是有利的
如题，我现在做出了一个蛋白相对于正常组织，在肿瘤里表达升高。想做某转录因子调控它的表达。查了转录因子预测的网站，每个预测的都很不一样，而且参与其调控的转录因子有几十个。我该怎么办呢？用什么实验技术或者方法能找到一个能做的呢？
用引物PCR扩增目基片段；
选择合适（抗性标记、酶切位点等）克隆载体（保真扩增）,并PCR片段连接入克隆载体；（般用Taq酶PCR产物末尾自带A,Solution 1作用与两端各带T线性T载体直接相连）
连接产物转化入受态肠杆菌,使含抗素培养基扩增；
肠杆菌提取质粒（即前面连接产物）,酶切鉴定测序鉴定均误目基片段切并与新表达载体连接,再转化入肠杆菌扩增,再提质粒,即想要目基片段克隆.
发展起各种双杂交系统Fields等建立系统基础些新系统主要报道基、诱饵表达载体及猎物表达载体等做些改进其重要改进引入额外报道基广泛采用HIS3基经改造带HIS3报道基酵母细胞HIS3启表达才能缺乏组氨酸选择性培养基HIS3报道基转录表达由诱饵猎物相互作用所启数双杂交系统往往同使用两甚至三报道基其 LacZ些改造基启区相同转录激结合位点相同转录激（述Gal4蛋白）激通种双重或重选择既提高检测灵敏度减少假阳性现象其针诱饵或猎物表达载体等所作改进详述
双杂交鉴定程要经两转化工作量相特别寻找新作用蛋白质候尤其且酵母细胞转化效率比细菌要低约4数量级转化步骤双杂交技术瓶颈Bendixen等通酵母接合型引用避免两转化操作同提高双杂交效率酵母性殖程涉及两种配合类型：a接合型α接合型两种单倍体间接合（mating）能形二倍体a接合型细胞间或α接合型细胞间能接合形二倍体根据酵母性殖特点文库质粒转化α接合型酵母细胞诱饵表达载体转化a接合型细胞别铺筛选平板使细胞菌苔（lawn）再两种菌苔复印同三重筛选平板原则诱饵靶蛋白发相互作用二倍体细胞才能平板单倍体细胞或虽二倍体细胞BD融合蛋白AD融合蛋白相互作用都淘汰克隆进步通β-半乳糖苷酶力进行鉴定项改进仅简化实验操作且提高双杂交筛选效率展开
