6IUG

Cryo-EM structure of the plant actin filaments from Zea mays pollen


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

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This is version 1.1 of the entry. See complete history


Literature

Cryo-EM Structure of Actin Filaments fromZea maysPollen.

Ren, Z.Zhang, Y.Zhang, Y.He, Y.Du, P.Wang, Z.Sun, F.Ren, H.

(2019) Plant Cell 31: 2855-2867

  • DOI: https://doi.org/10.1105/tpc.18.00973
  • Primary Citation of Related Structures:  
    6IUG

  • PubMed Abstract: 

    Actins are among the most abundant and conserved proteins in eukaryotic cells, where they form filamentous structures that perform vital roles in key cellular processes. Although large amounts of data on the biochemical activities, dynamic behaviors, and important cellular functions of plant actin filaments have accumulated, their structural basis remains elusive. Here, we report a 3.9 Å structure of the plant actin filament from Zea mays pollen (ZMPA) using cryo-electron microscopy. The structure shows a right-handed, double-stranded (two parallel strands) and staggered architecture that is stabilized by intra- and interstrand interactions. While the overall structure resembles that of other actin filaments, its DNase I binding loop bends farther outward, adopting an open conformation similar to that of the jasplakinolide- or beryllium fluoride (BeF x )-stabilized rabbit skeletal muscle actin (RSMA) filament. Single-molecule magnetic tweezers analysis revealed that the ZMPA filament can resist a greater stretching force than the RSMA filament. Overall, these data provide evidence that plant actin filaments have greater stability than animal actin filaments, which might be important to their role as tracks for long-distance vesicle and organelle transportation.plantcell;31/12/2855/FX1F1fx1.


  • Organizational Affiliation

    Center for Biological Imaging, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
pollen F-actin
A, B, C, D, E
371Zea maysMutation(s): 0 
UniProt
Find proteins for B6TQ08 (Zea mays)
Explore B6TQ08 
Go to UniProtKB:  B6TQ08
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB6TQ08
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ADP (Subject of Investigation/LOI)
Query on ADP

Download Ideal Coordinates CCD File 
F [auth A],
H [auth B],
J [auth C],
L [auth D],
N [auth E]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
G [auth A],
I [auth B],
K [auth C],
M [auth D],
O [auth E]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.90 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.11.1
RECONSTRUCTIONSPIDER24.08

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina91854206
National Natural Science Foundation of ChinaChina31770206
National Natural Science Foundation of ChinaChina31770794
Ministry of Science and Technology (China)China2013CB126902
Ministry of Science and Technology (China)China2017YFA0504700

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-06
    Type: Initial release
  • Version 1.1: 2019-12-25
    Changes: Database references