pCase12-cyto vector

cat.# FP991

The vector sequence has been compiled using the information from sequence databases, published literature, and other sources, together with partial sequences obtained by Evrogen. This vector has not been completely sequenced.

Download vector information: Data sheet (pdf) Sequence (txt) Restriction map (pdf) Restriction table (pdf)

Product Cat.# Size Price pCase12-cyto FP991 20 μg € 400 / 200* *50% discount on the second and subsequent vectors encoding same fluorescent protein or sensor ordered by the same customer. The price does not include delivery. The price varies in different countries. Please contact your local distributor for exact prices and delivery information. The product is not available in certain countries. Please contact Evrogen or your local distributor before ordering. Vector type mammalian expression vector Reporter Case12 Reporter codon usage mammalian Promoter for Case12 PCMV IE Host cells mammalian Selection prokaryotic – kanamycin eukaryotic – neomycin (G418) Replication prokaryotic – pUC ori eukaryotic – SV40 ori Use Expression of fluorescent Ca2+ sensor Case12 in mammalian cells under the control of CMV promoter; source of Case12 coding sequence

Vector description

pCase12-cyto is a mammalian expression vector encoding a fluorescent sensor Case12 (see reporter description). To increase mRNA translation efficiency, Kozak consensus translation initiation site is generated upstream of the Case12 coding sequence [Kozak, 1987].

The vector can be also used as a source of Case12 coding sequence. Flanking restriction sites are convenient for excision of Case12 sequence and its further insertion into other expression vectors of choice. Alternatively, Case12 coding sequence can be amplified by PCR.

The vector backbone contains immediate early promoter of cytomegalovirus (P_{CMV IE}) for protein expression, SV40 origin for replication in mammalian cells expressing SV40 T-antigen, pUC origin of replication for propagation in E. coli, and f1 origin for single-stranded DNA production. SV40 polyadenylation signals (SV40 poly A) direct proper processing of the 3'-end of the reporter mRNA.

SV40 early promoter (P_SV40) provides neomycin resistance gene (Neo^r) expression to select stably transfected eukaryotic cells using G418. Bacterial promoter (P) provides kanamycin resistance gene expression (Kan^r) in E. coli. Kan^r/Neo^r gene is linked with herpes simplex virus (HSV) thymidine kinase (TK) polyadenylation signals.

Expression in mammalian cells

pCase12-cyto vector can be transfected into mammalian cells by any known transfection method. CMV promoter provides strong, constitutive Case12 expression in eukaryotic cells. If required, stable transformants can be selected using G418 [Gorman, 1985].

Propagation in E. coli

Suitable host strains for propagation in E. coli include DH5alpha, HB101, XL1-Blue, and other general purpose strains. Plasmid incompatibility group is pMB1/ColE1. The vector confers resistance to kanamycin (30 μg/ml) to E. coli hosts. Copy number in E. coli is about 500.

Location of features

P_{CMV IE}: 1-589
Enhancer region: 59-465
TATA box: 554-560
Transcription start point: 583
Case12
Kozak consensus translation initiation site: 672-682
Start codon (ATG): 679-681
Stop codon: 1924-1926
Last amino acid in Case12: 1921-1923
SV40 early mRNA polyadenylation signal
Polyadenylation signals: 1922-1927, 2080-2085 & 2109-2114
mRNA 3' ends: 2118 & 2130
f1 single-strand DNA origin: 2177-2632
Bacterial promoter for expression of Kan^r gene
-35 region: 2694-2699
-10 region: 2717-2722
Transcription start point: 2729
SV40 origin of replication: 2973-3108
SV40 early promoter
Enhancer (72-bp tandem repeats): 2806-2877 & 2878-2949
21-bp repeats: 2953-2973, 2974-2994 & 2996-3016
Early promoter element: 3029-3035
Major transcription start points: 3025, 3063, 3069 & 3074
Kanamycin/neomycin resistance gene
Neomycin phosphotransferase coding sequences:
Start codon (ATG): 3157-3159
Stop codon: 3949-3951
G->A mutation to remove Pst I site: 3339
C->A (Arg to Ser) mutation to remove BssH II site: 3685
Herpes simplex virus (HSV) thymidine kinase (TK) polyadenylation signal
Polyadenylation signals: 4187-4192 & 4200-4205
pUC plasmid replication origin: 4536-5179