The bridge helix coordinates movements of modules in RNA polymerase

The RNA polymerase 'bridge helix' is a metastable α-helix that spans the leading edge of the enzyme active-site cleft. A new study published in BMC Biology reveals surprising tolerance to helix-disrupting changes in a region previously thought crucial for translocation, and suggests roles...

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Detalles Bibliográficos
Autores principales: Hein, Pyae P, Landick, Robert
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2010
Materias:
Commentary
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2993669/
https://www.ncbi.nlm.nih.gov/pubmed/21114873
http://dx.doi.org/10.1186/1741-7007-8-141
Descripción
Sumario:The RNA polymerase 'bridge helix' is a metastable α-helix that spans the leading edge of the enzyme active-site cleft. A new study published in BMC Biology reveals surprising tolerance to helix-disrupting changes in a region previously thought crucial for translocation, and suggests roles for two hinge-like segments of the bridge helix in coordinating modules that move during the nucleotide-addition cycle. See Research article: http://www.biomedcentral.com/1741-7007/8/134

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