Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 25.85 kDa 
• Atom Count: 1671 
• Modelled Residue Count: 229 
• Deposited Residue Count: 229 
• Unique protein chains: 1

1BU2

X-RAY STRUCTURE OF A VIRAL CYCLIN FROM HERPESVIRUS SAIMIRI

• PDB DOI: 10.2210/pdb1BU2/pdb

• Classification: CELL CYCLE REGULATION
• Organism(s): Herpesvirus saimiri (strain 11)
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1998-09-10 Released: 1999-06-15 
• Deposition Author(s): Schulze-Gahmen, U., Jung, J.U., Kim, S.-H.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.325 
• R-Value Work: 0.242 
• R-Value Observed: 0.242 

Literature

Crystal structure of a viral cyclin, a positive regulator of cyclin-dependent kinase 6.

Schulze-Gahmen, U., Jung, J.U., Kim, S.H.

(1999) Structure 7: 245-254

• PubMed: 10368294 
• DOI: 10.1016/s0969-2126(99)80035-5
• Primary Citation of Related Structures:  
  1BU2


• PubMed Abstract: 
  

Cyclin-dependent kinases (CDKs) have a central role in cell-cycle control and are activated by complex formation with positive regulatory proteins called cyclins and by phosphorylation. The overexpression and mutation of cyclins and CDKs has been associated with tumorigenesis and oncogenesis. A virus-encoded cyclin (v-cyclin) from herpesvirus saimiri has been shown to exhibit highest sequence homology to type D cyclins and specifically activates CDK6 of host cells to a very high degree.

---

Related Citations: 

• Virus-Encoded Cyclin
  Jung, J.U., Staeger, M., Desrosier, R.C.
  (1994) Mol Cell Biol 14: 7235

---

Organizational Affiliation: 

Department of Chemistry, Earnest Orlando Berkeley National Laboratory, University of California, Berkeley, California, 94720 USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYCLIN HOMOLOG	A	229	Herpesvirus saimiri (strain 11)	Mutation(s): 0  Gene Names: ECLF2, 72
UniProt
Find proteins for Q01043 (Saimiriine herpesvirus 2 (strain 11)) Explore Q01043  Go to UniProtKB:  Q01043

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.325 
• R-Value Work: 0.242 
• R-Value Observed: 0.242 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 37.92	α = 90
b = 61.44	β = 90
c = 130.57	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-09-10 
• Released Date: 1999-06-15 
Deposition Author(s): Schulze-Gahmen, U., Jung, J.U., Kim, S.-H.

Revision History  

• Version 1.0: 1999-06-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance