PurposeAAV expression of Ef1a-driven, cre-dependent, stabilized step function opsin (SSFO) for optogenetic activation.
|Item||Catalog #||Description||Quantity||Price (USD)|
|Plasmid||35503||Standard format: Plasmid sent in bacteria as agar stab||1||$85|
This material is available to academics and nonprofits only.
- Backbone size w/o insert (bp) 5605
Modifications to backboneAddition of an Ef1a promoter, lox sites and WPRE
Vector typeMammalian Expression, AAV
Growth in Bacteria
Bacterial Resistance(s)Ampicillin, 100 μg/mL
Growth Strain(s)NEB Stable
Copy numberHigh Copy
Insert Size (bp)1661
MutationC128S and D156A
- Promoter Ef1a
/ Fusion Protein
- EYFP (C terminal on insert)
- Cloning method Restriction Enzyme
- 5′ cloning site AscI (not destroyed)
- 3′ cloning site NheI (not destroyed)
- 5′ sequencing primer CACCCACACAAAGGAAAAGGGCC
- 3′ sequencing primer GCAATAGCATGATACAAAGG (Common Sequencing Primers)
Terms and Licenses
- Not Available to Industry
- Zeocin® is an InvivoGen trademark.
ChR2 variant harboring two amino acid substitutions which act to stabilize the conducting state of the channel to deactivate with a time constant of nearly 30 minutes following a brief pulse of activating blue light. Like previously published step function opsins, this stabilized step function opsin (SSFO) may be deactivated using yellow light (590nm). The stabilized open state of the channel allows for both lower power activation, meaning in some circumstances the light delivery system need not penetrate the brain, as well as for behavior in the absence of a tethered laser or other light delivery system.
These plasmids were created by your colleagues. Please acknowledge the Principal Investigator, cite the article in which the plasmids were described, and include Addgene in the Materials and Methods of your future publications.
For your Materials & Methods section:pAAV-Ef1a-DIO hChR2(C128S/D156A)-EYFP was a gift from Karl Deisseroth (Addgene plasmid # 35503 ; http://n2t.net/addgene:35503 ; RRID:Addgene_35503)
For your References section:Neocortical excitation/inhibition balance in information processing and social dysfunction. Yizhar O, Fenno LE, Prigge M, Schneider F, Davidson TJ, O'Shea DJ, Sohal VS, Goshen I, Finkelstein J, Paz JT, Stehfest K, Fudim R, Ramakrishnan C, Huguenard JR, Hegemann P, Deisseroth K. Nature. 2011 Jul 27;477(7363):171-8. doi: 10.1038/nature10360. 10.1038/nature10360 PubMed 21796121