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Protein topology determines substrate-binding mechanism in homologous enzymes.

Biochim Biophys Acta Gen Subj. 2018-12; 
Herrera-MorandeAlejandra,Castro-FernándezVictor,MerinoFelipe,Ramírez-SarmientoCesar A,FernándezFrancisco J,VegaM Cristina,GuixéVict
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Gene Synthesis … substrates. 2. Materials and methods. 2.1. Expression and purification of the PerGK mutant. The coding sequence for the designed PerGK mutant was optimized for protein expression in E. coli and synthesized de novo by Genscript Get A Quote

摘要

During evolution, some homologs proteins appear with different connectivity between secondary structures (different topology) but conserving the tridimensional arrangement of them (same architecture). These events can produce two types of arrangements; circular permutation or non-cyclic permutations. The first one results in the N and C terminus transferring to a different position on a protein sequence while the second refers to a more complex arrangement of the structural elements. In ribokinase superfamily, two different topologies can be identified, which are related to each other as a non-cyclic permutation occurred during the evolution. Interestingly, this change in topology is correlated with the... More

关键词

ADP-dependent glucokinase,Archaea,Folding topology,Kinetic mechanism,Non-cyclic permutation,Protein evolution,X-ray crystallogr
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