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| 产品目录号 | GKC-LMP010131 | ||
| 产品名称 | Human OTUB1-A549 KO Cell Pool | ||
| 基因编号 | OTUB1 | ||
| Uniprot_id | Q96FW1 | ||
| 宿主细胞 | A549 | ||
| 组织来源 | 人非小细胞肺癌细胞 | ||
| 规格 | 1×106cells/T25培养瓶或1×106cells/冻存管 | ||
| 培养基 | MEM+10%FBS+1%P/S | ||
| 筛选标记 | N/A | ||
| 生长特性 | 贴壁细胞，上皮细胞样 | ||
| 培养条件 | 37℃，5% CO2的培养箱 | ||
| 传代比例 | 1/2到1/3传代，2-3天长满 | ||
| 筛选标记 | N/A | ||
| 换液频率 | 2-3天换液 | ||
| 支原体检测结果 | 阴性 | ||
| 蛋白组验证结果 | N/A | ||
| 抗体验证结果 | N/A | ||
| 目标基因介绍 | 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. | ||
| 细胞系生成 | 采用CRISPR方法生成Human OTUB1-A549 KO Cell Pool | ||
| 数据说明 | Sanger 测序结果显示Human OTUB1-A549 KO Cell Pool敲除效率为96% | ||
| 应用 | 体内和体外测定 | ||
| 复苏 | 1）在37℃水浴中预热完全培养基。 2）将冻存管在 37℃水浴中解冻1-2分钟。 3）将冻存管转移到生物安全柜中，并用70%乙醇擦拭表面。 4）拧开冻存管管盖，将细胞悬液轻轻转移到含有9mL完全培养基的无菌离心管中。 5）在室温下以125g离心5-7分钟，弃上清。 6）用5mL的完整培养基重悬细胞沉淀，将细胞悬液转移到T25培养瓶中。 7）将细胞转移到37℃，5% CO2的培养箱中培养。 8）参考传代比例：1/2到1/3传代，2-5天长满。 | ||
| 传代 | 1）待培养瓶中细胞汇合度至80%-90%以上，可进行细胞传代。 2）将培养基、PBS、胰酶（0.25%Trypsin_EDTA Gibco 25200-056）等从4℃冰箱中拿出，置于37℃水浴中温度接近37℃时取出并在瓶子表面喷洒75%酒精后置于生物安全柜中。 3）从培养箱中取出待传代的培养瓶，瓶身喷洒75%酒精后置于生物安全柜中。 4）为避免冲散细胞，沿培养瓶上壁PBS润洗细胞，清洗细胞后弃去，T25加2mL。 5）加入对应体积的胰酶（T75加1.5mL，T25加0.5mL），并轻轻晃动瓶身使胰酶平铺满细胞底部。可根据实际情况适当增加或减少用量。约1-2min后大部分细胞脱落时，加入对应体积的完全培养基终止消化，并用5mL移液管轻轻吹打至细胞全部脱落。 6）将细胞悬液转移至15mL离心管，悬液300g离心5min，弃上清。 7）移取5mL完全培养基重悬细胞，按需求调整接种比例，并补充培养瓶中完全培养基，T75加至13-15mL，T25加至5mL，加1%双抗。 8）盖上瓶盖拧紧后轻轻晃动瓶身，使细胞混合均匀后置于37℃，5% CO4培养箱中。 | ||
| 细胞冻存 | 1）准备冻存液，并提前预冷。 2）确保待冻存的细胞满足冻存要求，用显微镜检查以下状态：健康的外观及形态特征、所处生长周期（对数晚期）、无污染或衰退迹象。 3）对细胞进行消化及离心处理（具体步骤参考传代培养流程） 4）按照每管1mL的量添加冻存液重悬细胞，吹打均匀后分装至冻存管。 5）将细胞放在程序降温盒中，在-80℃冰箱中冷冻。 6）后续将细胞转移到液氮罐中，以便长期储存。 | ||
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