5mxy | pdb_00005mxy

KustC0563 c-type cytochrome

spinqualitylabelsall models 5mxy, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5mxy is a 1 chain structure with sequence from Candidatus Kuenenia stuttgartiensis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.9Å Ligands: ACT, EDO, HEC, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q30JB5_KUEST Publication Abstract from PubMed Anaerobic ammonium oxidation (anammox) is a bacterial process in which ammonium and nitrite are combined into dinitrogen gas and water, yielding energy for the cell. This process relies on a series of redox reactions catalyzed by a set of enzymes, with electrons being shuttled to and from these enzymes, likely by small cytochrome c proteins. For this system to work productively, these electron carriers require a degree of specificity toward the various possible redox partners they encounter in the cell. Here, we compare two cytochrome c proteins from the anammox model organism Kuenenia stuttgartiensis. We show that they are highly homologous, are expressed at comparable levels, share the same fold, and display highly similar redox potentials, yet one of them accepts electrons from the metabolic enzyme hydroxylamine oxidase (HAO) efficiently, whereas the other does not. An analysis of the crystal structures supplemented by Monte Carlo simulations of the transient redox interactions suggests that this difference is at least partly due to the electrostatic field surrounding the proteins, illustrating one way in which the electron carriers in anammox could attain the required specificity. Moreover, the simulations suggest a different "outlet" for electrons on HAO than has traditionally been assumed. Specificity of Small c-Type Cytochromes in Anaerobic Ammonium Oxidation.,Akram M, Bock J, Dietl A, Barends TRM ACS Omega. 2021 Aug 9;6(33):21457-21464. doi: 10.1021/acsomega.1c02275., eCollection 2021 Aug 24. PMID:34471748 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Transcription initiation factors 3D structures

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