Kletzin, Arnulf and Heimerl, Thomas and Flechsler, Jennifer and van Niftrik, Laura and Rachel, Reinhard and Klingl, Andreas (2015) Cytochromes c in Archaea: distribution, maturation, cell architecture, and the special case of Ignicoccus hospitalis. FRONTIERS IN MICROBIOLOGY, 6: 439. ISSN 1664-302X,
Full text not available from this repository. (Request a copy)Abstract
Cytochromes c (Cytc) are widespread electron transfer proteins and important enzymes in the global nitrogen and sulfur cycles. The distribution of Cytc in more than 300 archaeal proteomes deduced from sequence was analyzed with computational methods including pattern and similarity searches, secondary and tertiary structure prediction. Two hundred and fifty-eight predicted Cytc (with single, double, or multiple heme c attachment sites) were found in some but not all species of the Desulfurococcales, Thermoproteales, Archaeoglobales, Methanosarcinales, Halobacteriales, and in two single-cell genome sequences of the Thermoplasmatales, all of them Cren- or Euryarchaeota. Other archaeal phyla including the Thaumarchaeota are so far free of these proteins. The archaeal Cytc sequences were bundled into 54 clusters of mutual similarity, some of which were specific for Archaea while others had homologs in the Bacteria. The cytochrome c maturation system I (CCM) was the only one found. The highest number and variability of Cytc were present in those species with known or predicted metal oxidation and/or reduction capabilities. Paradoxical findings were made in the haloarchaea: several Cytc had been purified biochemically but corresponding proteins were not found in the proteomes. The results are discussed with emphasis on cell morphologies and envelopes and especially for double-membraned Archaea-like Ignicoccus hospital/s. A comparison is made with compartmentalized bacteria such as the Planctomycetes of the Anammox group with a focus on the putative localization and roles of the Cytc and other electron transport proteins.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CANDIDATUS KUENENIA STUTTGARTIENSIS; AMMONIUM-OXIDIZING BACTERIA; ELECTRON-TRANSPORT CHAIN; COMPLETE GENOME SEQUENCE; BIOGENESIS SYSTEM I; FERROGLOBUS-PLACIDUS; RESPIRATORY-CHAIN; HYPERTHERMOPHILIC ARCHAEUM; HETERODISULFIDE REDUCTASE; HALOBACTERIUM-SALINARIUM; cytochrome c; Archaea; Ignicoccus hospitalis; ANME; anammox planctomycetes; bioinformatics; molecular modeling |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Mikrobiologie > Prof. Dr. Reinhard Rachel |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Jul 2019 09:22 |
| Last Modified: | 15 Jul 2019 09:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5506 |
Actions (login required)
 |
View Item |
