Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 13.19 kDa 
• Atom Count: 949 
• Residue Count: 101 
• Unique protein chains: 1

1PUC

P13SUC1 IN A STRAND-EXCHANGED DIMER

• DOI: 10.2210/pdb1PUC/pdb

• Classification: BINDING PROTEIN
• Organism(s): Schizosaccharomyces pombe
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1995-12-08 Released: 1996-04-03 
• Deposition Author(s): Khazanovich, N., Bateman, K.S., Chernaia, M., Michalak, M., James, M.N.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.241 
• R-Value Observed: 0.187 

Literature

Crystal structure of the yeast cell-cycle control protein, p13suc1, in a strand-exchanged dimer.

Khazanovich, N., Bateman, K., Chernaia, M., Michalak, M., James, M.

(1996) Structure 4: 299-309

• PubMed: 8805536 
• DOI: 10.1016/s0969-2126(96)00034-2
• Primary Citation of Related Structures:  
  1PUC


• PubMed Abstract: 
  

p13(suc1) from fission yeast is a member of the CDC28 kinase specific (CKS) class of cell-cycle control proteins, that includes CKS1 from budding yeast and the human homologues CksHs1 and CksHs2. p13(suc1) participates in the regulation of p34(cdc2), a cyclin-dependent kinase controlling the G1-S and the G2-M transitions of the cell cycle. The CKS proteins are believed to exert their regulatory activity by binding to the kinase, in which case their function may be governed by their conformation or oligomerization state. Previously determined X-ray structures of p13(suc1), CksHs1 and CksHs2 show that these proteins share a common fold but adopt different oligomeric states. Monomeric forms of p13(suc1) and CksHs1 have been solved. In addition, CksHs2 and p13(suc1) have been observed by X-ray crystallography in assemblies of strand-exchanged dimers. Analysis of various assemblies of the CKS proteins, as found in different crystal forms, should help to clarify their role in cell-cycle control.

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Organizational Affiliation: 

Medical Research Council Group in Protein Structure and Function, University of Alberta, Edmonton, Alberta, Canada T6G 2H7.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
P13SUC1	A	105	Schizosaccharomyces pombe	Mutation(s): 0
Find proteins for P08463 (Schizosaccharomyces pombe (strain 972 / ATCC 24843)) Explore P08463  Go to UniProtKB:  P08463

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CPS	A	3-[(3-CHOLAMIDOPROPYL)DIMETHYLAMMONIO]-1-PROPANESULFONATE C32 H58 N2 O7 S UMCMPZBLKLEWAF-BCTGSCMUSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.241 
• R-Value Observed: 0.187 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.27	α = 90
b = 55.28	β = 90
c = 111.8	γ = 90

Software Package:

Software Name	Purpose
SDMS	data collection
X-PLOR	model building
TNT	refinement
X-PLOR	refinement
SDMS	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-12-08 
• Released Date: 1996-04-03 
Deposition Author(s): Khazanovich, N., Bateman, K.S., Chernaia, M., Michalak, M., James, M.N.G.

Revision History 

• Version 1.0: 1996-04-03
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance