RRC ID 50519
Author Kogure T, Karasawa S, Araki T, Saito K, Kinjo M, Miyawaki A.
Title A fluorescent variant of a protein from the stony coral Montipora facilitates dual-color single-laser fluorescence cross-correlation spectroscopy.
Journal Nat Biotechnol
Abstract Dual-color fluorescence cross-correlation spectroscopy (FCCS) is a promising technique for quantifying protein-protein interactions. In this technique, two different fluorescent labels are excited and detected simultaneously within a common measurement volume. Difficulties in aligning two laser lines and emission crossover between the two fluorophores, however, make this technique complex. To overcome these limitations, we developed a fluorescent protein with a large Stokes shift. This protein, named Keima, absorbs and emits light maximally at 440 nm and 620 nm, respectively. Combining a monomeric version of Keima with cyan fluorescent protein allowed dual-color FCCS with a single 458-nm laser line and complete separation of the fluorescent protein emissions. This FCCS approach enabled sensitive detection of proteolysis by caspase-3 and the association of calmodulin with calmodulin-dependent enzymes. In addition, Keima and a spectral variant that emits maximally at 570 nm might facilitate simultaneous multicolor imaging with single-wavelength excitation.
Volume 24(5)
Pages 577-81
Published 2006-5-1
DOI 10.1038/nbt1207
PII nbt1207
PMID 16648840
MeSH Animals Anthozoa Calmodulin / chemistry Fluorescent Dyes / pharmacology Molecular Sequence Data Mutagenesis Mutation Recombinant Proteins / chemistry Spectrometry, Fluorescence / instrumentation* Spectrometry, Fluorescence / methods* Ultracentrifugation
IF 36.553
Times Cited 210
Altmetric score
オルトメトリクス指標項目
The most frequently cited source Patent(IFI CLAIMS)
Total number of mentions 14
Altmetric score changes over past 6months 0.0
Resource
DNA material tdKeima/pRSETB (RDB15232) mKeima/pcDNA3 (RDB15233) dKeima/pRSETB (RDB15234) dKeima570/pRSETB (RDB15235) CoralHue™ humanized monomeric Keima-Red (phmKeima-Red-MNL) (RDB18279) CoralHue™ monomeric Keima-Red (pmKeima-Red-S1) (RDB18280) CoralHue™ monomeric Keima-Red (pmKeima-Red-MN1) (RDB18281) CoralHue™ humanized monomeric Keima-Red (phmKeima-Red-S1) (RDB18282) CoralHue™ humanized monomeric Keima-Red (phmKeima-Red-MCL) (RDB18283) CoralHue™ humanized dimeric Keima-Red (phdKeima-Red-MNL) (RDB18284) CoralHue™ dimeric Keima-Red (pdKeima-Red-S1) (RDB18285) CoralHue™ humanized dimeric Keima-Red (phdKeima-Red-S1) (RDB18286) CoralHue™ humanized dimeric Keima-Red (phdKeima-Red-MCL) (RDB18287) CoralHue™ humanized dimeric Keima570 (phdKeima570-MNL) (RDB18293) CoralHue™ dimeric Keima570 (pdKeima570-S1) (RDB18294) CoralHue™ humanized dimeric Keima570 (phdKeima570-S1) (RDB18295) CoralHue™ humanized dimeric Keima570 (phdKeima570-MCL) (RDB18296) CoralHue™ Plasma Membrane-targeted mKeima-Red (pPM-mKeima-Red) (RDB18322) CoralHue™ Mitochondria-targeted monomeric Midoriishi-Cyan 1 (RDB18323) CoralHue™ Nucleoplasm-targeted humanized dimeric Keima-Red (RDB18324) CoralHue™ Nucleoplasm-targeted humanized Kusabira-Cyan 1 (pNP-hKCy1) (RDB18325) CoralHue™ Nucleoplasm-targeted humanized dimeric Keima570 (RDB18327)