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Maintenance of genome integrity by the late-acting cytoplasmic iron-sulfur assembly (CIA) complex
Journal article   Open access   Peer reviewed

Maintenance of genome integrity by the late-acting cytoplasmic iron-sulfur assembly (CIA) complex

M. S. Petronek and B. G. Allen
Frontiers in genetics, Vol.14, pp.1152398-1152398
03/08/2023
DOI: 10.3389/fgene.2023.1152398
PMCID: PMC10031043
PMID: 36968611
url
https://doi.org/10.3389/fgene.2023.1152398View
Published (Version of record) Open Access

Abstract

Iron-sulfur (Fe-S) clusters are unique, redox-active co-factors ubiquitous throughout cellular metabolism. Fe-S cluster synthesis, trafficking, and coordination result from highly coordinated, evolutionarily conserved biosynthetic processes. The initial Fe-S cluster synthesis occurs within the mitochondria; however, the maturation of Fe-S clusters culminating in their ultimate insertion into appropriate cytosolic/nuclear proteins is coordinated by a late-acting cytosolic iron-sulfur assembly (CIA) complex in the cytosol. Several nuclear proteins involved in DNA replication and repair interact with the CIA complex and contain Fe-S clusters necessary for proper enzymatic activity. Moreover, it is currently hypothesized that the late-acting CIA complex regulates the maintenance of genome integrity and is an integral feature of DNA metabolism. This review describes the late-acting CIA complex and several [4Fe-4S] DNA metabolic enzymes associated with maintaining genome stability.
CIA complex DNA metabolism Fe-S biogenesis Genetics genomic integrity iron metabolism

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