2022
Structures of the CcmABCD heme release complex at multiple states
Li J, Zheng W, Gu M, Han L, Luo Y, Yu K, Sun M, Zong Y, Ma X, Liu B, Lowder EP, Mendez DL, Kranz RG, Zhang K, Zhu J. Structures of the CcmABCD heme release complex at multiple states. Nature Communications 2022, 13: 6422. PMID: 36307425, PMCID: PMC9616876, DOI: 10.1038/s41467-022-34136-5.Peer-Reviewed Original ResearchConceptsHigh-resolution cryo-EM structuresResolution cryo-EM structureABC transporter complexAttachment of hemeCryo-EM structureLarge membrane complexesHeme-binding siteATP-binding siteATP-dependent releaseTransfer of hemeC-type cytochromesHeme chaperoneHeme traffickingCytochrome c proteinMembrane proteinsHeme transferTransporter complexMembrane complexATP hydrolysisStructural basisC proteinAMP-PNPFunctional studiesHeme releaseUnbound form
2021
Cryo-EM structures of Escherichia coli cytochrome bo3 reveal bound phospholipids and ubiquinone-8 in a dynamic substrate binding site
Li J, Han L, Vallese F, Ding Z, Choi SK, Hong S, Luo Y, Liu B, Chan CK, Tajkhorshid E, Zhu J, Clarke O, Zhang K, Gennis R. Cryo-EM structures of Escherichia coli cytochrome bo3 reveal bound phospholipids and ubiquinone-8 in a dynamic substrate binding site. Proceedings Of The National Academy Of Sciences Of The United States Of America 2021, 118: e2106750118. PMID: 34417297, PMCID: PMC8403832, DOI: 10.1073/pnas.2106750118.Peer-Reviewed Original ResearchConceptsHydrogen bondsMembrane scaffold protein (MSP) nanodiscsSide chainsMetal redox centerCryo-EM structureInternal water moleculesEscherichia coli cytochrome bo3Facilitate proton transferImidazole side chainIsoprene side chainAccess of waterCryogenic electron microscopyRedox centersWater moleculesProton transferSubunit IAqueous phaseConformation 1Respiratory cytochromesRelated cytochromesHydrophobic grooveUbiquinol oxidaseQuinol oxidaseCytochrome bo3Computational studyCryo‐EM Structures of Outer‐arm Dynein Array Bound to Microtubule Doublet Reveal a Mechanism for Motor Coordination
Rao Q, Wang Y, Chai P, Kuo Y, Han L, Yang R, Yang Y, Howard J, Zhang K. Cryo‐EM Structures of Outer‐arm Dynein Array Bound to Microtubule Doublet Reveal a Mechanism for Motor Coordination. The FASEB Journal 2021, 35 DOI: 10.1096/fasebj.2021.35.s1.03099.Peer-Reviewed Original ResearchOuter arm dyneinMicrotubule-bound stateInner arm dyneinsCentral pair complexMicrotubule-binding domainMicrotubule doubletsIntermediate chainATP hydrolysisFundamental cellular processesHeavy chainCryo-EM structureCryo-EM analysisCryo-electron tomographyKey motor proteinCryo-electron microscopyLight chainCellular processesEukaryotic ciliaT. thermophilaEmbryonic developmentAdjacent microtubule doubletsCellular motilityMotor proteinsAxonemal dyneinsMotile cilia