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- 英文名:
pLEGFP-N1
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- 供应商:
武汉华尔纳生物科技有限公司
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Product Introduction
| 品牌 |
华尔纳生物 | ||||||||||||||||||||||||
| 货号 |
WN-12851 | ||||||||||||||||||||||||
| 规格 |
2ug | ||||||||||||||||||||||||
| 价格 |
询价 | ||||||||||||||||||||||||
| 货期 |
现货 | ||||||||||||||||||||||||
订购信息
质粒图谱![]() 载体描述载体说明pEGFP-N1 encodes a red-shifted variant of wild-type GFP (1–3) which has been optimized for brighter fluorescence and higher expression in mammalian cells. (Excitation maximum = 488 nm; emission maximum = 507 nm.) pEGFP-N1 encodes the GFPmut1 variant (4) which contains the double-amino-acid substitution of Phe-64 to Leu and Ser-65 to Thr. The coding sequence of the EGFP gene contains more than 190 silent base changes which correspond to human codon-usage preferences (5). Sequences flanking EGFP have been converted to a Kozak consensus translation initiation site (6) to further increase the translation efficiency in eukaryotic cells. The MCS in pEGFP-N1 is between the immediate early promoter of CMV (PCMV IE) and the EGFP coding sequences. Genes cloned into the MCS will be expressed as fusions to the N-terminus of EGFP if they are in the same reading frame as EGFP and there are no intervening stop codons. SV40 polyadenylation signals downstream of the EGFP gene direct proper processing of the 3' end of the EGFP mRNA. The vector backbone also contains an SV40 origin for replication in mammalian cells expressing the SV40 T antigen. A neomycin-resistance cassette (Neor), consisting of the SV40 early promoter, the neomycin/kanamycin resistance gene of Tn5, and polyadenylation signals from the Herpes simplex virus thymidine kinase (HSV TK) gene, allows stably transfected eukaryotic cells to be selected using G418. A bacterial promoter upstream of this cassette expresses kanamycin resistance in E. coli. The pEGFP-N1 backbone also provides a pUC origin of replication for propagation in E. coli and an f1 origin for single-stranded DNA production. 载体应用Fusions to the N terminus of EGFP retain the fluorescent properties of the native protein allowing the localization of the fusion protein in vivo . The target gene should be cloned into pEGFP-N1 so that it is in frame with the EGFP coding sequences, with no intervening in-frame stop codons. The inserted gene should include the initiating ATG codon. The recombinant EGFP vector can be transfected into mammalian cells using any standard transfection method. If required, stable transformants can be selected using G418 (7). pEGFP-N1 can also be used simply to express EGFP in a cell line of interest (e.g., as a transfection marker). |
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武汉华尔纳生物科技有限公司,简称华尔纳生物(Warner Bio),坐 落于武汉生物产业基地·光谷生物城,是一家生物医学资源开发,科研生 产,产品销售集一体的科技型企业。
华尔纳生物(Warner Bio)始终专注于生命科学领域及细胞实验培养 方向,坚持为客户打造优质高效,安全可靠的生命科学产品,我们始终坚 持于以客户为中心、以品质求生存、以价值求发展、以服务求口碑的企业 理念,从而获得全国广大科研用户的一致认可。
团队以高效的服务品质,专业卓越的技术能力构建了华中地区最大的 生物细胞资源典藏中心,经过多年不懈的努力与发展,现与武汉大学、华 中科技大学、武汉协和医院、武汉同济医院、四川大学华西医院、首都医 科大学、中山大学附属第三医院等全国多所高校、医院、研究所单位达成 长期稳定的合作,同时为科研人员提供免费专业的售前售中售后服务,为 您的科研实验保驾护航。
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文献和实验maoliping70:pEGFP-N1为载体表达的核蛋白要确证表达于核内的方法为用PI染色,PI只与核酸结合,在488nm激发下发红光,而GFP发绿光,红光与绿光重叠发黄光。还有以下疑问:1.作为对照的pEGFP-N1空载体转染细胞后表达的GFP蛋白为27KD,能自由通过核孔复合体,也就是说GFP在核内也有表达,那会与PI重叠发黄光影响测定吗?2.有提出GFP在细胞固定时,会从细胞漏出,那细胞本身表达的浆蛋白若分子量小,也会漏出吗?还是因为有定位信号而不漏出?3.细胞固定用的70%乙醇是直接
影响的。 ono1180 我想问一下,除了正规公司,什么地方能求购到比较便宜,又能够保真的质粒 lisail 我有PLEGFP-N1的病毒载体,需要的话联系我Q2427657955 本文由丁香园论坛提供,想了解更多有用的、有意思的前沿资讯以及酷炫的实验方法的你,都可以成为师兄的好伙伴 师兄微信号:shixiongcoming
也可以,这样用一个启动子CMV同时表达两个蛋白,而不是融合蛋白。 liuyicheng84427 VEGF应该加在GFP的N端还是C端? lmnsmu VEGF加在GFP的N端或C端均可以,而且有一些载体如pEGFP-N1或pEGFP-C1在N端或C端已经有GFP的序列,只需将你的目的基因序列插入到MCS区即可融合表达。 naj2007 多谢大家! hiqihong
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