pmKate2-ER is a mammalian expression vector intended for far-red fluorescent labeling of the lumen of the endoplasmic reticulum (ER) [Roderick et al., 1997]. The vector encodes far-red fluorescent protein mKate2 (see reporter description) containing ER targeting signal (calreticulin signal sequence [Fliegel et al., 1989]) fused to the mKate2 N-terminus and ER retention signal (KDEL sequence [Munro and Pelham, 1987]) fused to the mKate2 C-terminus.
HeLa cell expressing fusion of human calreticulin ER targeting signal and KDEL peptide with mKate2.
The fusion protein is localized in the lumen of the endoplasmic reticulum.
mKate2 codon usage is optimized for high expression in mammalian cells (humanized) [Haas et al., 1996].
pmKate2-ER vector can be used as a source of mKate2-ER hybrid sequence. The vector backbone contains unique restriction sites that permit its excision and further insertion into expression vector of choice.
Expression in mammalian cells
pmKate2-ER vector can be transfected into mammalian cells by any known transfection method. CMV promoter provides strong, constitutive expression of the mKate2-ER fusion in eukaryotic cells. If required, stable transformants can be selected using G418 [Gorman, 1985].
Location of features
PCMV IE: 1-589
Enhancer region: 59-465
TATA box: 554-560
Transcription start point: 583
mKate2-ER fusion: 597-1391
Start codon (ATG): 597-599
Calreticulin signal sequence: 597-647
ER retention sequence (KDEL): 1380-1391
Stop codon: 1392-1394
SV40 early mRNA polyadenylation signal
Polyadenylation signals: 1593-1598 & 1622-1627
mRNA 3' ends: 1631 & 1643
f1 single-strand DNA origin: 1690-2145
Bacterial promoter for expression of Kanr gene
-35 region: 2207-2212
-10 region: 2230-2235
Transcription start point: 2242
SV40 origin of replication: 2486-2621
SV40 early promoter
Enhancer (72-bp tandem repeats): 2319-2390 & 2391-2462
21-bp repeats: 2466-2486, 2487-2507 & 2509-2529
Early promoter element: 2542-2548
Major transcription start points: 2538, 2576, 2582 & 2587
Kanamycin/neomycin resistance gene
Neomycin phosphotransferase coding sequences:
Start codon (ATG): 2670-2672
Stop codon: 3462-3464
G->A mutation to remove Pst I site: 2852
C->A (Arg to Ser) mutation to remove BssH II site: 3198
Herpes simplex virus (HSV) thymidine kinase (TK) polyadenylation signal
Polyadenylation signals: 3700-3705 & 3713-3718
pUC plasmid replication origin: 4049-4692
mKate2-related materials (also referred to as "Products") are intended for research use only. The Products are covered by U.S. Pat. 7,638,615; European Pat. 1994149; and other Evrogen Patents and/or Patent applications pending. By use of these Products, you accept the terms and conditions of the applicable Limited Use Label License.
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