The Ubiquitous Chromatin Opening Element (UCOE) technology offers significant advances in recombinant mammalian protein expression. Unlike traditional vectors, UCOE-containing vectors have the capacity to ease the process of isolating cell line clones that express high-levels of recombinant proteins. UCOE sequences promote reproducible and stable high level expression of a linked gene by altering chromatin structure to a transcriptionally permissive state that negates epigenetic-mediated (e.g. DNA methylation) silencing. CET 1019 HD-hygro-SceI is a mammalian expression plasmid vector containing both the mouse Rps3 UCOE and the human HNRPA2B1-CBX3 UCOE each upstream of a strong human cytomegalovirus (hCMV) immediate early promoter-enhancer element. CET 1019 AD-hygro-SceI is a mammalian expression plasmid vector containing both the mouse Rps3 UCOE and the human HNRPA2B1-CBX3 UCOE each upstream of a guinea pig CMV (gpCMV) promoter-enhancer element. The CET 1019 HD-hygro-SceI and CET 1019 AD-hygro-SceI vectors possess the following features: •A multiple cloning site downstream of the UCOE-CMV combinations containing unique restriction enzyme sites to permit easy insertion of any gene of interest (cDNA or genomic) •A polyadenylation element from the SV40 early region located downstream of the multiple cloning site for appropriate mRNA 3 end formation •A hygromycin antibiotic resistance gene for selection of stably transfected mammalian cells •A β-lactamase gene for plasmid selection and propagation in transformed prokaryotic cells in the presence of ampicillin •An I-SceI homing restriction endonuclease site for linearization of constructs prior to transfection into mammalian cells, which favors integration into the target cell genome via the pre-generated free DNA ends and thus retains the integrity of the UCOE-CMV-transgene cassettes THIS PRODUCT IS ONLY AVAILABLE FOR SALE TO ACADEMIC INSTITUTIONS OR NOT-FOR-PROFIT ENTITIES FOR USE UNDER THIS PRODUCT LABEL LICENSE. FOR INFORMATION ON COMMERCIAL LICENSING OF THE PATENTED UCOE TECHNOLOGY, PLEASE CONTACT licensing@emdmillipore.com.，官网链接：https://www.sigmaaldrich.cn/product/mm/uc0e04 默克 科研、开发、生产。 作为生命科学行业的全球领先供应商，我们致力于为科研、生物技术开发和生产，以及制药药物疗法开发和生产提供各类解决方案和服务。

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