7M2W

Engineered disulfide cross-linked closed conformation of the Yeast gamma-TuRC(SS)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.00 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

CM1-driven assembly and activation of yeast gamma-tubulin small complex underlies microtubule nucleation.

Brilot, A.F.Lyon, A.S.Zelter, A.Viswanath, S.Maxwell, A.MacCoss, M.J.Muller, E.G.Sali, A.Davis, T.N.Agard, D.A.

(2021) Elife 10

  • DOI: 10.7554/eLife.65168
  • Primary Citation of Related Structures:  
    7M2W, 7M2Z, 7M2X, 7M2Y, 7M3P

  • PubMed Abstract: 
  • Microtubule (MT) nucleation is regulated by the γ-tubulin ring complex (γTuRC), conserved from yeast to humans. In Saccharomyces cerevisiae , γTuRC is composed of seven identical γ-tubulin small complex (γTuSC) sub-assemblies, which associate helically to template MT growth ...

    Microtubule (MT) nucleation is regulated by the γ-tubulin ring complex (γTuRC), conserved from yeast to humans. In Saccharomyces cerevisiae , γTuRC is composed of seven identical γ-tubulin small complex (γTuSC) sub-assemblies, which associate helically to template MT growth. γTuRC assembly provides a key point of regulation for the MT cytoskeleton. Here, we combine crosslinking mass spectrometry, X-ray crystallography, and cryo-EM structures of both monomeric and dimeric γTuSCs, and open and closed helical γTuRC assemblies in complex with Spc110p to elucidate the mechanisms of γTuRC assembly. γTuRC assembly is substantially aided by the evolutionarily conserved CM1 motif in Spc110p spanning a pair of adjacent γTuSCs. By providing the highest resolution and most complete views of any γTuSC assembly, our structures allow phosphorylation sites to be mapped, surprisingly suggesting that they are mostly inhibitory. A comparison of our structures with the CM1 binding site in the human γTuRC structure at the interface between GCP2 and GCP6 allows for the interpretation of significant structural changes arising from CM1 helix binding to metazoan γTuRC.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, University of California at San Francisco, San Francisco, United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tubulin gamma chainB [auth A], A [auth B], C, D473Saccharomyces cerevisiae S288CMutation(s): 2 
Gene Names: TUB4YLR212CL8167.21
UniProt
Find proteins for P53378 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P53378
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Spindle pole body component SPC97E, G823Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SPC97YHR172W
UniProt
Find proteins for P38863 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Spindle pole body component SPC98F, H846Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SPC98YNL126WN1222N1879
UniProt
Find proteins for P53540 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Spindle pole body component 110J [auth K], I [auth U], K [auth X], L [auth Y]220Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SPC110NUF1XCM1YDR356WD9476.3
UniProt
Find proteins for P32380 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32380 
Go to UniProtKB:  P32380
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP (Subject of Investigation/LOI)
Query on GTP

Download Ideal Coordinates CCD File 
M [auth B], N [auth A], O [auth C], P [auth D]GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.00 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United StatesDavid Agard
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01 GM031627
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35 GM118099
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP01 GM105537
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP41 GM103533
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM083960
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM109824
National Science Foundation (NSF, United States)United States1144247
National Institutes of Health/Office of the DirectorUnited States1S10OD020054
National Institutes of Health/Office of the DirectorUnited States1S10OD021741
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01 GM124149
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP30 GM124169
Department of Energy (DOE, United States)United StatesDE-AC02-05CH11231

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-12
    Type: Initial release
  • Version 1.1: 2021-05-19
    Changes: Database references