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Article

Electron transfer quenching in light adapted and mutant forms of the AppA BLUF domain.

Faraday discussions - 1 Jan 2015

Laptenok Sergey P, Lukacs Andras, Brust Richard, Haigney Allison, Gil Agnieszka, Towrie Michael, Greetham Gregory M, Tonge Peter J, Meech Stephen R

Abstract excerpt

The Blue Light Using Flavin (BLUF) domain proteins are an important family of photoreceptors controlling a range of responses in a wide variety of organisms. The details of the primary photochemical mechanism, by which light absorption in the isoalloxazine ring of the flavin is converted into a structure change to form the signalling state of the protein, is unresolved. In this work we apply ultrafast time...

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PMID: 25633480
DOI: 10.1039/c4fd00189c

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TRIR

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Electron transfer quenching in light adapted and mutant forms of the AppA BLUF domain.PMID 25633480Read ↗

Crystal structures of the AppA BLUF domain photoreceptor provide insights into blue light-mediated signal transduction.Semantic proximity Read ↗

Ultrafast structural dynamics in BLUF domains: transient infrared spectroscopy of AppA and its mutants.Semantic proximity Read ↗

Structural refinement of a key tryptophan residue in the BLUF photoreceptor AppA by ultraviolet resonance Raman spectroscopy.Semantic proximity Read ↗

Tryptophan at position 104 is involved in transforming light signal into changes of beta-sheet structure for the signaling state in the BLUF domain of AppA.Semantic proximity Read ↗

In vivo effects on photosynthesis gene expression of base pair exchanges in the gene encoding the light-responsive BLUF domain of AppA in Rhodobacter sphaeroides.Semantic proximity Read ↗

BLUF domain function does not require a metastable radical intermediate state.Semantic proximity Read ↗

The critical role of a hydrogen bond between Gln63 and Trp104 in the blue-light sensing BLUF domain that controls AppA activity.Semantic proximity Read ↗

Spectroscopic studies of the AppA BLUF domain from Rhodobacter sphaeroides: addressing movement of tryptophan 104 in the signaling state.Semantic proximity Read ↗

A Q63E Rhodobacter sphaeroides AppA BLUF domain mutant is locked in a pseudo-light-excited signaling state.Semantic proximity Read ↗

Single Amino Acid Mutation Decouples Photochemistry of the BLUF Domain from the Enzymatic Function of OaPAC and Drives the Enzyme to a Switched-on State.Semantic proximity Read ↗

The role of key amino acids in the photoactivation pathway of the Synechocystis Slr1694 BLUF domain.Semantic proximity Read ↗

Bright blue-shifted fluorescent proteins with Cys in the GAF domain engineered from bacterial phytochromes: fluorescence mechanisms and excited-state dynamics.Semantic proximity Read ↗

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