6X0V

Structure of MZT2/GCP-NHD and CDK5Rap2 at position 13 of the gamma-TuRC


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

MZT Proteins Form Multi-Faceted Structural Modules in the gamma-Tubulin Ring Complex.

Wieczorek, M.Huang, T.L.Urnavicius, L.Hsia, K.C.Kapoor, T.M.

(2020) Cell Rep 31: 107791-107791

  • DOI: 10.1016/j.celrep.2020.107791
  • Primary Citation of Related Structures:  
    6M33, 6X0V, 6X0U

  • PubMed Abstract: 
  • Microtubule organization depends on the γ-tubulin ring complex (γ-TuRC), a ∼2.3-MDa nucleation factor comprising an asymmetric assembly of γ-tubulin and GCP2-GCP6. However, it is currently unclear how the γ-TuRC-associated microproteins MZT1 and MZT2 contribute to the structure and regulation of the holocomplex ...

    Microtubule organization depends on the γ-tubulin ring complex (γ-TuRC), a ∼2.3-MDa nucleation factor comprising an asymmetric assembly of γ-tubulin and GCP2-GCP6. However, it is currently unclear how the γ-TuRC-associated microproteins MZT1 and MZT2 contribute to the structure and regulation of the holocomplex. Here, we report cryo-EM structures of MZT1 and MZT2 in the context of the native human γ-TuRC. MZT1 forms two subcomplexes with the N-terminal α-helical domains of GCP3 or GCP6 (GCP-NHDs) within the γ-TuRC "lumenal bridge." We determine the X-ray structure of recombinant MZT1/GCP6-NHD and find it is similar to that within the native γ-TuRC. We identify two additional MZT/GCP-NHD-like subcomplexes, one of which is located on the outer face of the γ-TuRC and comprises MZT2 and GCP2-NHD in complex with a centrosomin motif 1 (CM1)-containing peptide. Our data reveal how MZT1 and MZT2 establish multi-faceted, structurally mimetic "modules" that can expand structural and regulatory interfaces in the γ-TuRC.


    Organizational Affiliation

    Laboratory of Chemistry and Cell Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA. Electronic address: kapoor@rockefeller.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitotic-spindle organizing protein 2A E158Homo sapiensMutation(s): 0 
Gene Names: MZT2AFAM128AMOZART2A
Find proteins for Q6P582 (Homo sapiens)
Explore Q6P582 
Go to UniProtKB:  Q6P582
NIH Common Fund Data Resources
PHAROS:  Q6P582
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Gamma-tubulin complex component 2 F930Homo sapiensMutation(s): 0 
Gene Names: TUBGCP2GCP2
Find proteins for Q9BSJ2 (Homo sapiens)
Explore Q9BSJ2 
Go to UniProtKB:  Q9BSJ2
NIH Common Fund Data Resources
PHAROS:  Q9BSJ2
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Centrosome protein Cep215 GH1893Homo sapiensMutation(s): 0 
Gene Names: CDK5RAP2CEP215KIAA1633
Find proteins for Q96SN8 (Homo sapiens)
Explore Q96SN8 
Go to UniProtKB:  Q96SN8
NIH Common Fund Data Resources
PHAROS:  Q96SN8
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States--
Human Frontier Science Program (HFSP)--
Ministry of Science and Technology (MoST, Taiwan)--
Academia Sinica (Taiwan)--

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-22
    Type: Initial release