甜菜碱含量测检测试剂盒

优点如下：

1、快速简便：全程约50分钟，可测100例左右样本。

2、取样量微：本法取手指或耳垂等末梢血20ul～50ul即可测红细胞中的SOD，只需2ml静脉血可测白细胞中的SOD及血小板中SOD，只需50mg左右组织就可测组织匀浆、胞浆中的SOD，0.2g组织可测线粒体及微粒体中的SOD。

3、灵敏度高：IC50=0.05g/ml，是邻苯三酚法的18倍。

4、稳定性好：试剂盒2～8℃存放6个月有效。

5、再现性好：变异系数CV=1.7%。

6、回收试验： X =103.3%。

7、受外界影响因素小：干扰因素少，重复性强。

8、测试面广：可测动物血液、组织、各种体液、灌流液等、各种培养细胞、植物组织、各种水产以及化妆品、保健品等，效果均佳。

产品参数：

特点：

       1、优化设计的实验方案，1小时即可完成

       2、灵敏度高，操作便捷

       3、试剂盒提供检测所需的全套试剂 

操作步骤(仅供参考)：  

1.配制65mM H2O2基液：本试剂盒提供的H2O2基液中的H2O2浓度约为1M。由于过氧化氢不是非常稳定，使用前需自行测定过氧化氢的实际浓度。把浓度约为1M的H2O2基液用本试剂盒提供的CAT Assay buffer稀释100倍，使H2O2基液中的H2O2浓度约为10mM。

2.准备样品：  

a,细胞或组织样品：取恰当细胞或组织进行裂解，可以采用Leagene Western及IP 细胞裂解液，如果有必要需进行适当匀浆，低速离心取上清，-70℃冻存，用于CAT的检测。  

b,血浆、血清和尿液样品：血浆、血清按照常规方法制备，用生理盐水10倍稀释后， 可以直接用于本试剂盒的测定，尿液通常也可以直接用于测定，-70℃冻存，用于CAT的检测。  

c,全血样品：收集适量的全血(whole blood)至一抗凝管内，颠倒混匀。取100μl全 血冻融一次，用CAT Assay buffer1000倍后进行CAT检测。

d,血液中的红细胞裂解液：用抗凝管收集血液，颠倒混匀。取至少500μl全血4℃ 3000g离心5min，弃上清，沉淀用预冷的生理盐水洗涤3次。  

e,高活性样品：如果样品中含有较高活性的CAT，可以使用CAT Assay buffer稀释。

f,(选做)样品准备完毕后可以用BCA蛋白浓度测定试剂盒测定蛋白浓度，以便于后续 计算单位蛋白重量组织或细胞内的CAT含量。  

3、 CAT检测：按照下表设置空白管、自身对照管、测定管，溶液应按照顺序依次加入，并 注意避免产生气泡。如果样品中的酶活性过高，可以减少样品用量或适当稀释后再进行测定。样品的检测能设置平行孔。

4、分光光度计检测405nm处吸光度，分光光度计比色杯光径0.5cm。如果没有分光光度计，亦可用酶标仪检测，但如果有条件，尽量采用分光光度计检测。蒸馏水调零，读取各管吸光度值。一般应数小时内检测完毕。

样品制备：

1）. 直接或稀释使用清亮无色中性液体样品，体积可达2.000ml。

2）. 过滤混浊溶液。

3）. 除去样品中的CO 2 （测试盒说明书过过滤）。

4 ）. 测试盒说明书过加氢氧化钾或氢氧化钠将酸性样品的PH值调至8.0。

5 ）. 调整酸性浅色样品的PH值至8.0，孵育约15分钟。

6 ）. 用空白样品做对照测定有色样品（如有必要调整PH值至8.0）。

7 ）. 用PVPP（ 聚乙烯吡咯烷酮）或聚酰胺处理深色未经稀释或体积更大的样品。

8 ）. 压碎、搅匀固体或半固体样品，用水溶解提取。

9 ）. 用Carrez试剂将含有蛋白质的样品去蛋白。

10）.含脂肪的样品用热水提取。
交叉反应  Human, Mouse, Rat, Dog, Cow, Horse, Sheep

产品类型  一抗    

研究领域  细胞生物 学 表观遗传学  

蛋白分子量  predicted molecular weight: 73kDa

性    状  Lyophilized or Liquid

免 疫 原  KLH conjugated synthetic peptide derived from human OTUB1

亚    型  IgG

纯化方法  affinity purified by Protein A

储 存 液  Preservative: 15mM Sodium Azide, Constituents: 1% BSA, 0.01M PBS, pH 7.4

产品应用   WB=1:100-500  ELISA=1:500-1000  IHC-P=1:100-500  IHC-F=1:100-500  ICC=1:100-500  IF=1:100-500

（石蜡切片需做抗原修复）

 not yet tested in other applications.

 optimal dilutions/concentrations should be determined by the end user.  

保存条件  Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C.

Important Note  This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.

产品介绍 OTUB1 is a 271 amino acid protein that contains one OTU (ovarian tumor) domain and belongs to the OTU family of predicted cysteine proteases. Expressed as two isoforms (one of which is present throughout the body and the other of which is present only in lymphoid tissues), OTUB1 functions as a hydrolase that can remove ubiquitin residues from target proteins, thereby preventing protein degradation and playing an important role in protein turnover. OTUB1 interacts with GRAIL and, via this interaction, plays a role in the regulation and the induction of T-cell anergy, a phenomenon that occurs when T-cells are rendered unresponsive to their cognate antigens. Due to its interaction with GRAIL, OTUB1 is an important regulator of immune responses in secondary lymphoid organs.

Function : Hydrolase that can specifically remove 'Lys-48'-linked conjugated ubiquitin from proteins and plays an important regulatory role at the level of protein turnover by preventing degradation. Regulator of T-cell anergy, a phenomenon that occurs when T-cells are rendered unresponsive to antigen rechallenge and no longer respond to their cognate antigen. Acts via its interaction with RNF128/GRAIL, a crucial inductor of CD4 T-cell anergy. Isoform 1 destabilizes RNF128, leading to prevent anergy. In contrast, isoform 2 stabilizes RNF128 and promotes anergy. Surprisingly, it regulates RNF128-mediated ubiquitination, but does not deubiquitinate polyubiquitinated RNF128. Deubiquitinates estrogen receptor alpha (ESR1). Mediates deubiquitination of 'Lys-48'-linked polyubiquitin chains, but not 'Lys-63'-linked polyubiquitin chains. Not able to cleave di-ubiquitin. Also capable of removing NEDD8 from NEDD8 conjugates, but with a much lower preference compared to 'Lys-48'-linked ubiquitin.

Plays a key non-catalytic role in DNA repair regulation by inhibiting activity of RNF168, an E3 ubiquitin-protein ligase that promotes accumulation of 'Lys-63'-linked histone H2A and H2AX at DNA damage sites. Inhibits RNF168 independently of ubiquitin thioesterase activity by binding and inhibiting UBE2N/UBC13, the E2 partner of RNF168, thereby limiting spreading of 'Lys-63'-linked histone H2A and H2AX marks. Inhibition occurs by binding to free ubiquitin: free ubiquitin acts as an allosteric regulator that increases affinity for UBE2N/UBC13 and disrupts interaction with UBE2V1. The OTUB1-UBE2N/UBC13-free ubiquitin complex adopts a configuration that mimics a cleaved 'Lys48'-linked di-ubiquitin chain.
甜菜碱含量测检测试剂盒活性依赖性神经保护因子检测试剂盒三(4-基) 97%S(-)-2-甲基-1-丁 98%

饥饿素检测试剂盒烯酰氯, 96%,含~0.05% 噻吩稳定剂D-脯氨酸甲酯盐酸盐 97%

肌钙蛋白I检测试剂盒乙酰氯 AR,98.5%吡啶-N-氧化物 95%

肌钙蛋白T检测试剂盒正丁酰氯  98%(S)-(-)-1, 2, 4-丁三 98%

血肌酐检测试剂盒氯代异烷 CP,97%L-丝氨酸乙酯盐酸盐 99%

肌红蛋白检测试剂盒氯代异烷 GR,99%D-色氨 97%

肌腱蛋白R检测试剂盒氯乙酰氯 98%1-(2,4,6-三异基苯基磺酰)咪唑  98%