The thermophilic fungus Chaetomium thermophilum holds great promise for structural biology. To increase the efficiency of its biochemical and structural characterization and to explore its thermophilic properties beyond those of individual proteins, we obtained transcriptomics and proteomics data, and integrated them with computational annotation methods and a multitude of biochemical experiments conducted by the structural biology community. We considerably improved the genome annotation of Chaetomium thermophilum and characterized the transcripts and expression of thousands of genes. We furthermore show that the composition and structure of the expressed proteome of Chaetomium thermophilum is similar to its mesophilic relatives. Data were deposited in a publicly available repository and provide a rich source to the structural biology community.
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http://dx.doi.org/10.1093/nar/gku1147 | DOI Listing |
Structure
November 2024
CEITEC-Central European Institute of Technology, Masaryk University, Brno, Czechia; National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czechia. Electronic address:
The 5'-3' exoribonuclease Xrn2, known as Rat1 in yeasts, terminates mRNA transcription by RNA polymerase II (RNAPII). In the torpedo model of termination, the activity of Xrn2/Rat1 is enhanced by Rai1, which is recruited to the termination site by Rtt103, an adaptor protein binding to the RNAPII C-terminal domain (CTD). The overall architecture of the Xrn2/Rat1-Rai1-Rtt103 complex remains unknown.
View Article and Find Full Text PDFNat Commun
November 2024
Department of Experimental Medical Science, Lund University, Sölvegatan 19, SE-221 84, Lund, Sweden.
Endoplasmic reticulum (ER) membrane resident P5A-ATPases broadly affect protein biogenesis and quality control, and yet their molecular function remains debated. Here, we report cryo-EM structures of a P5A-ATPase, CtSpf1, covering multiple transport intermediates of the E1 → E1-ATP → E1P-ADP → E1P → E2P → E2.P → E2 → E1 cycle.
View Article and Find Full Text PDFMethods Enzymol
October 2024
Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, NC, United States. Electronic address:
Yeast Sen1 and its vertebrate ortholog Senataxin (also known as SETX) are RNA-DNA resolving helicases. Sen1 and SETX are implicated in multiple critical nuclear functions not limited to but including DNA replication and repair, RNA processing, and transcription. These> 200 kDa helicases have a two-domain architecture with an N-terminal regulatory helical repeat array linked to an SF1b helicase motor core via a variable sized central linker of low complexity sequence.
View Article and Find Full Text PDFBiochem Pharmacol
November 2024
College of Chemistry, Fuzhou University, Fuzhou 350108, China. Electronic address:
Proper chromosome segregation during cell division relies on the timely dissolution of chromosome cohesion. Separase (EC3.4.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
August 2024
Laboratory of Molecular Biology, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892.
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