Abstract

Genetically-encoded calcium ion (Ca2+) indicators (GECIs) are indispensable tools for measuring Ca2+ dynamics and neuronal activities in vitro and in vivo. Red fluorescent protein (RFP)-based GECIs enable multicolor visualization with blue or cyan-excitable fluorophores and combined use with blue or cyan-excitable optogenetic actuators. Here we report the development, structure, and validation of a new red fluorescent Ca2+ indicator, K-GECO1, based on a circularly permutated RFP derived from the sea anemone Entacmaea quadricolor. We characterized the performance of K-GECO1 in cultured HeLa cells, dissociated neurons, stem cell derived cardiomyocytes, organotypic brain slices, zebrafish spinal cord in vivo, and mouse brain in vivo.

Details

Title
A genetically encoded Ca2+ indicator based on circularly permutated sea anemone red fluorescent protein
Author
Shen, Yi; Hod, Dana; Abdelfattah, Ahmed S; Patel, Ronak; Shea, Jamien; Molina, Rosana S; Rawal, Bijal; Rancic, Vladimir; Yu-Fen, Chang; Wu, Lanshi; Chen, Yingche; Qian, Yong; Wiens, Matthew D; Hambleton, Nathan; Ballanyi, Klaus; Hughes, Thomas E; Drobizhev, Mikhail; Kim, Douglas S; Koyama, Minoru; Schreiter, Eric R; Campbell, Robert E
University/institution
Cold Spring Harbor Laboratory Press
Section
New Results
Publication year
2017
Publication date
Nov 2, 2017
Publisher
Cold Spring Harbor Laboratory Press
ISSN
2692-8205
Source type
Working Paper
Language of publication
English
ProQuest document ID
2071240338
Copyright
�� 2017. This article is published under http://creativecommons.org/licenses/by/4.0/ (���the License���). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.