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Open data
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Basic information
Entry | Database: PDB / ID: 6c06 | ||||||
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Title | Mycobacterium tuberculosis RNAP Holo/RbpA/Fidaxomicin | ||||||
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![]() | transcription/antibiotic / initiation / ![]() ![]() | ||||||
Function / homology | ![]() bacterial-type RNA polymerase holo enzyme binding / response to water / bacterial-type RNA polymerase core enzyme binding / ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | ||||||
Biological species | ![]() ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Darst, S.A. / Campbell, E.A. / Boyaci Selcuk, H. / Chen, J. / Lilic, M. | ||||||
![]() | ![]() Title: Fidaxomicin jams RNA polymerase motions needed for initiation via RbpA contacts. Authors: Hande Boyaci / James Chen / Mirjana Lilic / Margaret Palka / Rachel Anne Mooney / Robert Landick / Seth A Darst / Elizabeth A Campbell / ![]() Abstract: Fidaxomicin (Fdx) is an antimicrobial RNA polymerase (RNAP) inhibitor highly effective against RNAP in vitro, but clinical use of Fdx is limited to treating intestinal infections due to poor ...Fidaxomicin (Fdx) is an antimicrobial RNA polymerase (RNAP) inhibitor highly effective against RNAP in vitro, but clinical use of Fdx is limited to treating intestinal infections due to poor absorption. To identify the structural determinants of Fdx binding to RNAP, we determined the 3.4 Å cryo-electron microscopy structure of a complete RNAP holoenzyme in complex with Fdx. We find that the actinobacteria general transcription factor RbpA contacts fidaxomycin, explaining its strong effect on . Additional structures define conformational states of RNAP between the free apo-holoenzyme and the promoter-engaged open complex ready for transcription. The results establish that Fdx acts like a doorstop to jam the enzyme in an open state, preventing the motions necessary to secure promoter DNA in the active site. Our results provide a structural platform to guide development of anti-tuberculosis antimicrobials based on the Fdx binding pocket. #1: Journal: To Be Published Title: Structure of Mycobacterium Tuberculosis RNAP Holo Enzyme/RbpA in closed clamp conformation Authors: Darst, S.A. / Campbell, E.A. / Boyaci Selcuk, H. / Chen, J. / Lilic, M. | ||||||
Validation Report | ![]() ![]() ![]() | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmcif format | ![]() ![]() ![]() |
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PDB format | ![]() ![]() |
PDBML Plus | ![]() |
Others | ![]() |
-Related structure data
Related structure data | ![]() 7323CM ![]() 7319C ![]() 7320C ![]() 7322C ![]() 6bzoC ![]() 6c04C ![]() 6c05C C: citing same article ( M: map data used to model this data |
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Similar-shape strucutres |
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Links
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Assembly
Deposited unit | ![]()
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Components
-DNA-directed RNA polymerase subunit ... , 4 types, 5 molecules ABCDE
#1: Protein | ![]() Mass: 37745.328 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: rpoA, rpoA_1, CLD25_18970, ERS007661_01801, ERS007663_01917, ERS007665_01054, ERS007670_00938, ERS007672_03180, ERS007679_01858, ERS007688_02121, ERS007703_04392, ERS007720_00529, ERS007722_ ...Gene: rpoA, rpoA_1, CLD25_18970, ERS007661_01801, ERS007663_01917, ERS007665_01054, ERS007670_00938, ERS007672_03180, ERS007679_01858, ERS007688_02121, ERS007703_04392, ERS007720_00529, ERS007722_04215, ERS023446_02770, ERS024213_02470, ERS027644_00781, ERS027646_02177, ERS027652_00409, ERS027653_00362, ERS027654_02191, ERS027656_00886, ERS027659_01235, ERS027661_02549, ERS027666_01143, ERS124361_03550, SAMEA2682864_03600, SAMEA2683035_02863 Production host: ![]() ![]() ![]() References: UniProt: A0A045J8T1, UniProt: P9WGZ1*PLUS, ![]() #2: Protein | | ![]() Mass: 130198.922 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() ![]() ![]() References: UniProt: V9Z879, UniProt: P9WGY9*PLUS, ![]() #3: Protein | | ![]() Mass: 148074.094 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: rpoC, rpoC_1, CLD25_03785, ERS007665_00591, ERS023446_00410, ERS031537_00289, ERS124361_01694, SAMEA2682864_01702 Production host: ![]() ![]() ![]() References: UniProt: A0A045J9E2, UniProt: P9WGY7*PLUS, ![]() #4: Protein | | ![]() Mass: 11776.996 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: rpoZ, ERS007672_03979, ERS007703_04032, ERS007720_04749, ERS027652_00548, ERS027654_02543, ERS027656_03959, ERS124361_02246 Production host: ![]() ![]() ![]() References: UniProt: A0A0T9N9K3, UniProt: P9WGY5*PLUS, ![]() |
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-Protein , 2 types, 2 molecules FJ
#5: Protein | Mass: 58169.477 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: sigA, hrdB_2, CLD25_14885, ERS007663_03246, ERS007679_00877, ERS007720_03380, ERS007722_02638, ERS023446_01203, ERS024213_00371, ERS024276_00878, ERS027644_01437, ERS027646_01351, ERS027653_ ...Gene: sigA, hrdB_2, CLD25_14885, ERS007663_03246, ERS007679_00877, ERS007720_03380, ERS007722_02638, ERS023446_01203, ERS024213_00371, ERS024276_00878, ERS027644_01437, ERS027646_01351, ERS027653_01295, ERS027661_00252, ERS124361_02215, SAMEA2682864_02073, SAMEA2683035_01696 Production host: ![]() ![]() ![]() |
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#6: Protein | Mass: 12993.695 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Gene: rbpA, CLD25_11245, ERS007670_01223, ERS007672_02518, ERS007679_02287, ERS007681_03389, ERS007688_02707, ERS007703_03544, ERS007720_03893, ERS007722_02881, ERS007731_02971, ERS007739_00749, ...Gene: rbpA, CLD25_11245, ERS007670_01223, ERS007672_02518, ERS007679_02287, ERS007681_03389, ERS007688_02707, ERS007703_03544, ERS007720_03893, ERS007722_02881, ERS007731_02971, ERS007739_00749, ERS007741_03837, ERS023446_04025, ERS024213_00234, ERS024276_03708, ERS027644_04191, ERS027646_02841, ERS027652_02278, ERS027653_01824, ERS027654_04301, ERS027656_03007, ERS027659_00863, ERS027661_00907, ERS027666_04473, ERS031537_02569, ERS124361_01290, SAMEA2682864_00634, SAMEA2683035_00392 Production host: ![]() ![]() ![]() |
-Non-polymers , 3 types, 4 molecules 




#7: Chemical | ![]() #8: Chemical | ChemComp-MG / | ![]() #9: Chemical | ChemComp-FI8 / | ![]() |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: ![]() |
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Sample preparation
Component | Name: Mycobacterium tuberculosis RNAP Holo with RbpA and Fidaxomicin Type: COMPLEX / Entity ID: #1-#6 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() ![]() |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied![]() ![]() |
Vitrification![]() | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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Microscopy | Model: FEI TALOS ARCTICA |
Electron gun | Electron source![]() ![]() |
Electron lens | Mode: BRIGHT FIELD![]() |
Image recording | Electron dose: 6.7 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.11.1_2575: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction![]() | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction![]() | Resolution: 5.15 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 171547 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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