Journal Article

FZJ-2022-01887

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The diversity of heme sensor systems – heme-responsive transcriptional regulation mediated by transient heme protein interactions

Krüger, A.FZJ* ; Keppel, M. ; Sharma, V.FZJ* ; Frunzke, J. (Corresponding author)FZJ*

2022
Oxford Univ. Press Oxford

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Please use a persistent id in citations: http://hdl.handle.net/2128/31182  doi:10.1093/femsre/fuac002

Abstract: Heme is a versatile molecule that is vital for nearly all cellular life by serving as prosthetic group for various enzymes or as nutritional iron source for diverse microbial species. However, elevated levels of heme is toxic to cells. The complexity of this stimulus has shaped the evolution of diverse heme sensor systems, which are involved in heme-dependent transcriptional regulation in eukaryotes and prokaryotes. The functions of these systems are manifold—ranging from the specific control of heme detoxification or uptake systems to the global integration of heme and iron homeostasis. This review focuses on heme sensor systems, regulating heme homeostasis by transient heme protein interaction. We provide an overview of known heme-binding motifs in prokaryotic and eukaryotic transcription factors. Besides the central ligands, the surrounding amino acid environment was shown to play a pivotal role in heme binding. The diversity of heme-regulatory systems, therefore, illustrates that prediction based on pure sequence information is hardly possible and requires careful experimental validation. Comprehensive understanding of heme-regulated processes is not only important for our understanding of cellular physiology, but also provides a basis for the development of novel antibacterial drugs and metabolic engineering strategies.

Note: Biotechnologie 1

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Contributing Institute(s):

1. Biotechnologie (IBG-1)

Research Program(s):

1. 2171 - Biological and environmental resources for sustainable use (POF4-217) (POF4-217)

Appears in the scientific report 2022

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