Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - AB 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Biological Assembly 2  

 3D View: Structure | Ligand Interaction

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Protein Workshop | Ligand Explorer

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 56475.00 
• Atom Count: 3921 
• Residue Count: 500 
• Unique protein chains: 2

1YAG

STRUCTURE OF THE YEAST ACTIN-HUMAN GELSOLIN SEGMENT 1 COMPLEX

• DOI: 10.2210/pdb1YAG/pdb

• Classification: CONTRACTILE PROTEIN
• Organism(s): Homo sapiens, Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 1998-10-09 Released: 1999-10-09 
• Deposition Author(s): Vorobiev, S., Strokopytov, B., Frieden, C., Almo, S.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.231 
• R-Value Work: 0.193 

Literature

The structure of nonvertebrate actin: Implications for the ATP hydrolytic mechanism

Vorobiev, S., Strokopytov, B., Drubin, D.G., Frieden, C., Ono, S., Condeelis, J., Rubenstein, P.A., Almo, S.C.

(2003) Proc.Natl.Acad.Sci.USA 100: 5760-5765

• PubMed: 12732734 
• DOI: 10.1073/pnas.0832273100
• Primary Citation of Related Structures:  
  1NMD, 1NM1, 1NLV, 1D4X


• PubMed Abstract: 
  

The structures of Saccharomyces cerevisiae, Dictyostelium, and Caenorhabditis elegans actin bound to gelsolin segment-1 have been solved and refined at resolutions between 1.9 and 1.75 A. These structures reveal several features relevant to the ATP hydrolytic mechanism, including identification of the nucleophilic water and the roles of Gln-137 and His-161 in positioning and activating the catalytic water, respectively. The involvement of these residues in the catalytic mechanism is consistent with yeast genetics studies. This work highlights both structural and mechanistic similarities with the small and trimeric G proteins and restricts the types of mechanisms responsible for the considerable enhancement of ATP hydrolysis associated with actin polymerization. The conservation of functionalities involved in nucleotide binding and catalysis also provide insights into the mechanistic features of members of the family of actin-related proteins.

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Related Citations: 

• The Structure of an Open State of Beta-Actin at 2.65 A Resolution
  Chik, J.K.,Lindberg, U.,Schutt, C.E.
  (1996) J.Mol.Biol. 263: 607
• Structure of Gelsolin Segment 1-Actin Complex and the Mechanism of Filament Severing
  Mclaughlin, P.J.,Gooch, J.T.,Mannherz, H.G.,Weeds, A.G.
  (1993) Nature 364: 685
• Atomic Structure of the Actin:DNase I Complex
  Kabsch, W.,Mannherz, H.G.,Suck, D.,Pai, E.F.,Holmes, K.C.
  (1990) Nature 347: 37




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Organizational Affiliation: 

Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (ACTIN)	A	375	Saccharomyces cerevisiae (strain ATCC 204508 / S288c)	Mutation(s): 0  Gene Names: ACT1 (ABY1, END7)
Find proteins for P60010 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Go to UniProtKB:  P60010

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
PROTEIN (GELSOLIN)	G	125	Homo sapiens	Mutation(s): 0  Gene Names: GSN
Find proteins for P06396 (Homo sapiens) Go to Gene View: GSN Go to UniProtKB:  P06396

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
ATP	A	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N
SO4	A	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	G	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
MG	A	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.231 
• R-Value Work: 0.193 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 176.662	α = 90.00
b = 68.099	β = 102.55
c = 54.598	γ = 90.00

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-10-09 
• Released Date: 1999-10-09 
• Deposition Author(s): Vorobiev, S., Strokopytov, B., Frieden, C., Almo, S.C.

Revision History 

• Version 1.0: 1999-10-09
  Type: Initial release
• Version 1.1: 2007-10-16
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance