ArticleProtein engineering, design & selection : PEDS2019
Protein tolerance to random circular permutation correlates with thermostability and local energetics of residue-residue contacts.
Article in Protein engineering, design & selection : PEDS, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- A Bioelectrochemical Crossbar Architecture Screening Platform (BiCASP) for Extracellular Electron Transfer.bioRxiv : the preprint server for biology · 2025Article
- Detection of circular permutations by Protein Language Models.Computational and structural biotechnology journal · 2025Article
- Rational Design of a Circularly Permuted Flavin-Based Fluorescent Protein.Chembiochem : a European journal of chemical biology · 2024Article
- A cellular selection identifies elongated flavodoxins that support electron transfer to sulfite reductase.Protein science : a publication of the Protein Society · 2023Article
- Probing ion channel functional architecture and domain recombination compatibility by massively parallel domain insertion profiling.Nature communications · 2021Article
- Linking molecular evolution to molecular grafting.The Journal of biological chemistryReview
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4 authors.
Funding
Abstract
Adenylate kinase (AK) orthologs with a range of thermostabilities were subjected to random circular permutation, and deep mutational scanning was used to evaluate where new protein termini were nondisruptive to activity. The fraction of circularly permuted variants that retained function in each library correlated with AK thermostability. In addition, analysis of the positional tolerance to new termini, which increase local conformational flexibility, showed that bonds were either functionally sensitive to cleavage across all homologs, differentially sensitive, or uniformly tolerant. The mobile AMP-binding domain, which displays the highest calculated contact energies, presented the greatest tolerance to new termini across all AKs. In contrast, retention of function in the lid and core domains was more dependent upon AK melting temperature. These results show that family permutation profiling identifies primary structure that has been selected by evolution for dynamics that are critical to activity within an enzyme family. These findings also illustrate how deep mutational scanning can be applied to protein homologs in parallel to differentiate how topology, stability, and local energetics govern mutational tolerance.
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