ArticleBiochemistry2013
A radical transfer pathway in spore photoproduct lyase.
Article in Biochemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 35 citations in OpenAlex.
- Review
- Pathways of thymidine hypermodification.Nucleic acids research · 2022Article
- Radical SAM Enzymes and Ribosomally-Synthesized and Post-translationally Modified Peptides: A Growing Importance in the Microbiomes.Frontiers in chemistry · 2021Review
- Radical SAM Enzyme Spore Photoproduct Lyase: Properties of the Ω Organometallic Intermediate and Identification of Stable Protein Radicals Formed during Substrate-Free Turnover.Journal of the American Chemical Society · 2020Article
- Properties of Site-Specifically Incorporated 3-Aminotyrosine in Proteins To Study Redox-Active Tyrosines: Escherichia coli Ribonucleotide Reductase as a Paradigm.Biochemistry · 2018Article
- Mechanistic Investigations of PoyD, a Radical S-Adenosyl-l-methionine Enzyme Catalyzing Iterative and Directional Epimerizations in Polytheonamide A Biosynthesis.Journal of the American Chemical Society · 2018Article
- Spore photoproduct within DNA is a surprisingly poor substrate for its designated repair enzyme-The spore photoproduct lyase.DNA repair · 2017Article
- Kinetic Isotope Effects and Hydrogen/Deuterium Exchange Reveal Large Conformational Changes During the Catalysis of the Clostridium acetobutylicum Spore Photoproduct Lyase.Photochemistry and photobiology · 2017Article
- Insights into the Activity Change of Spore Photoproduct Lyase Induced by Mutations at a Peripheral Glycine Residue.Frontiers in chemistry · 2017Article
- Biophysical Characterization of Fluorotyrosine Probes Site-Specifically Incorporated into Enzymes: E. coli Ribonucleotide Reductase As an Example.Journal of the American Chemical Society · 2016Article
- Photochemistry and Photobiology of the Spore Photoproduct: A 50-Year Journey.Photochemistry and photobiology · 2015Review
- Spore photoproduct lyase: the known, the controversial, and the unknown.The Journal of biological chemistry · 2015Review
- Recent advances in radical SAM enzymology: new structures and mechanisms.ACS chemical biology · 2014Review
- Radical S-adenosylmethionine enzymes.Chemical reviews · 2014Review
- The structure of an authentic spore photoproduct lesion in DNA suggests a basis for recognition.Acta crystallographica. Section D, Biological crystallography · 2014Article
- Can biowarfare agents be defeated with light?Virulence · 2013Review
- The enzyme-mediated direct reversal of a dithymine photoproduct in germinating endospores.International journal of molecular sciences · 2013Article
Corrections and comments
- Erratum issued
Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
Abstract
Spore photoproduct lyase (SPL) repairs a covalent UV-induced thymine dimer, spore photoproduct (SP), in germinating endospores and is responsible for the strong UV resistance of endospores. SPL is a radical S-adenosyl-l-methionine (SAM) enzyme, which uses a [4Fe-4S](+) cluster to reduce SAM, generating a catalytic 5'-deoxyadenosyl radical (5'-dA(•)). This in turn abstracts a H atom from SP, generating an SP radical that undergoes β scission to form a repaired 5'-thymine and a 3'-thymine allylic radical. Recent biochemical and structural data suggest that a conserved cysteine donates a H atom to the thymine radical, resulting in a putative thiyl radical. Here we present structural and biochemical data that suggest that two conserved tyrosines are also critical in enzyme catalysis. One [Y99(Bs) in Bacillus subtilis SPL] is downstream of the cysteine, suggesting that SPL uses a novel hydrogen atom transfer (HAT) pathway with a pair of cysteine and tyrosine residues to regenerate SAM. The other tyrosine [Y97(Bs)] has a structural role to facilitate SAM binding; it may also contribute to the SAM regeneration process by interacting with the putative (•)Y99(Bs) and/or 5'-dA(•) intermediates to lower the energy barrier for the second H abstraction step. Our results indicate that SPL is the first member of the radical SAM superfamily (comprising more than 44000 members) to bear a catalytically operating HAT chain.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.