ArticleThe Journal of biological chemistry2016
The Relay/Converter Interface Influences Hydrolysis of ATP by Skeletal Muscle Myosin II.
Article in The Journal of biological chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 21 citations in OpenAlex.
- Mutation-induced free-energy remodeling of recovery stroke and ATP hydrolysis in human cardiac β-myosin.Biophysical journal · 2026Article
- Structure of the Inhibited Smooth Muscle Myosin and Its Implications on the Regulation of Insect Striated Muscle Myosin.Life (Basel, Switzerland) · 2025Review
- Protocols for Myosin and Actin-Myosin Assays Using Rapid, Stopped-Flow Kinetics.Methods in molecular biology (Clifton, N.J.) · 2024Article
- Investigation of the Recovery Stroke and ATP Hydrolysis and Changes Caused Due to the Cardiomyopathic Point Mutations in Human Cardiac β Myosin.The journal of physical chemistry. B · 2021Article
- Cardiomyopathy mutations impact the actin-activated power stroke of human cardiac myosin.Biophysical journal · 2021Article
- Mechanochemical Function of Myosin II: Investigation into the Recovery Stroke and ATP Hydrolysis.The journal of physical chemistry. B · 2020Article
- X-ray Crystallographic and Molecular Dynamic Analyses of Drosophila melanogaster Embryonic Muscle Myosin Define Domains Responsible for Isoform-Specific Properties.Journal of molecular biology · 2020Article
- Dilated cardiomyopathy mutation in the converter domain of human cardiac myosin alters motor activity and response to omecamtiv mecarbil.The Journal of biological chemistry · 2019Article
- Converter domain mutations in myosin alter structural kinetics and motor function.The Journal of biological chemistry · 2019Article
- Thick Filament Protein Network, Functions, and Disease Association.Comprehensive Physiology · 2018Review
- Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
Abstract
The interface between relay and converter domain of muscle myosin is critical for optimal myosin performance. Using Drosophila melanogaster indirect flight muscle S1, we performed a kinetic analysis of the effect of mutations in the converter and relay domain. Introduction of a mutation (R759E) in the converter domain inhibits the steady-state ATPase of myosin S1, whereas an additional mutation in the relay domain (N509K) is able to restore the ATPase toward wild-type values. The R759E S1 construct showed little effect on most steps of the actomyosin ATPase cycle. The exception was a 25-30% reduction in the rate constant of the hydrolysis step, the step coupled to the cross-bridge recovery stroke that involves a change in conformation at the relay/converter domain interface. Significantly, the double mutant restored the hydrolysis step to values similar to the wild-type myosin. Modeling the relay/converter interface suggests a possible interaction between converter residue 759 and relay residue 509 in the actin-detached conformation, which is lost in R759E but is restored in N509K/R759E. This detailed kinetic analysis of Drosophila myosin carrying the R759E mutation shows that the interface between the relay loop and converter domain is important for fine-tuning myosin kinetics, in particular ATP binding and hydrolysis.
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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.