8e5g | pdb_00008e5g

Cryo-EM of A. veneficus cytochrome filament

spinqualitylabelsall models 8e5g, resolution 3.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8e5g is a 1 chain structure with sequence from Archaeoglobus veneficus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.9Å Ligands: HEC Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function F2KMU8_ARCVS Publication Abstract from PubMed Electrically conductive appendages from the anaerobic bacterium Geobacter sulfurreducens, recently identified as extracellular cytochrome nanowires (ECNs), have received wide attention due to numerous potential applications. However, whether other organisms employ similar ECNs for electron transfer remains unknown. Here, using cryoelectron microscopy, we describe the atomic structures of two ECNs from two major orders of hyperthermophilic archaea present in deep-sea hydrothermal vents and terrestrial hot springs. Homologs of Archaeoglobus veneficus ECN are widespread among mesophilic methane-oxidizing Methanoperedenaceae, alkane-degrading Syntrophoarchaeales archaea, and in the recently described megaplasmids called Borgs. The ECN protein subunits lack similarities in their folds; however, they share a common heme arrangement, suggesting an evolutionarily optimized heme packing for efficient electron transfer. The detection of ECNs in archaea suggests that filaments containing closely stacked hemes may be a common and widespread mechanism for long-range electron transfer in both prokaryotic domains of life. Extracellular cytochrome nanowires appear to be ubiquitous in prokaryotes.,Baquero DP, Cvirkaite-Krupovic V, Hu SS, Fields JL, Liu X, Rensing C, Egelman EH, Krupovic M, Wang F Cell. 2023 Jun 22;186(13):2853-2864.e8. doi: 10.1016/j.cell.2023.05.012. Epub , 2023 Jun 7. PMID:37290436 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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