URL: http://www.addgene.org/45561

Proper Citation: RRID:Addgene_45561

Insert Name: Puromycin N-acetyl transferase

Bacterial Resistance: Ampicillin

Defining Citation: PMID:11515370

Vector Backbone Description: Backbone Marker:Clontech; Backbone Size:4731; Vector Backbone:pEGFP-C1; Vector Types:Mammalian Expression, Bifunctional selection protein; Bacterial Resistance:Ampicillin

Comments: Plasmid pEGFP-puro was constructed by PCR amplification of PuroR coding sequences from pPur (Clontech Laboratories, Palo Alto CA, USA) using upstream (5'-AAGTCCGGACTCAGATCTAGGAGACGACCTTCCATGACCGAGT-3') and downstream (5'-GTTATCTAGATCCGGTGGATCCCGGGCACCGGGCTTGCGGGTCATGCACCA-3') primers, digestion of the PCR product with BglII andBamHI, and ligation into BglII/BamHI digested pEGFP-C1 (Clontech Laboratories). To construct a fusion protein containing both EGFP and PuroR sequences, PuroR coding sequences were ligated into an existing expression cassette for EGFP. The resulting fusion protein was designated EGFP-puro and is contained in plasmid pEGFP-puro. This plasmid contains the strong human cytomegalovirus immediate early promoter (Phcmv), the EGFP puro open reading frame, and the simian virus 40 (SV40) polyadenylation signal. The EGFP-puro protein contains the first 245 amino acids of EGFP. The C-terminal five amino acids of EGFP were deleted and replaced by four linker-encoded amino acids, followed by the complete 200-amino-acid PuroR sequence. The C-terminus is formed by 11 amino acids encoded by vector sequences. The resulting fusion protein (EGFP-puro) confers both green fluorescence and resistance to puromycin when expressed in mammalian cells.

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