1BM8

DNA-BINDING DOMAIN OF MBP1

• PDB DOI: https://doi.org/10.2210/pdb1BM8/pdb

• Classification: CELL CYCLE
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1998-07-29 Released: 1999-03-02 
• Deposition Author(s): Xu, R.-M., Koch, C., Liu, Y., Horton, J.R., Knapp, D., Nasmyth, K., Cheng, X.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.71 Å
• R-Value Free: 0.261 
• R-Value Work: 0.197 
• R-Value Observed: 0.197 

Literature

Crystal structure of the DNA-binding domain of Mbp1, a transcription factor important in cell-cycle control of DNA synthesis.

Xu, R.M., Koch, C., Liu, Y., Horton, J.R., Knapp, D., Nasmyth, K., Cheng, X.

(1997) Structure 5: 349-358

• PubMed: 9083114 
• DOI: https://doi.org/10.1016/s0969-2126(97)00192-5
• Primary Citation of Related Structures:  
  1BM8


• PubMed Abstract: 
  

  During the cell cycle, cells progress through four distinct phases, G1, S, G2 and M; transcriptional controls play an important role at the transition between these phases. MCB-binding factor (MBF), a transcription factor from budding yeast, binds to the so-called MCB (MluI cell-cycle box) elements found in the promoters of many DNA synthesis genes, and activates the transcription of those at the G1-->S phase transition. MBF is comprised of two proteins, Mbp1 and Swi6.

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Organizational Affiliation: 

WM Keck Structural Biology Laboratory Cold Spring Harbor Laboratory Cold Spring Harbor New York, 11724, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 11.49 kDa 
• Atom Count: 895 
• Modelled Residue Count: 99 
• Deposited Residue Count: 99 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TRANSCRIPTION FACTOR MBP1	A	99	Saccharomyces cerevisiae	Mutation(s): 0
UniProt
Find proteins for P39678 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P39678  Go to UniProtKB:  P39678

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.71 Å
• R-Value Free: 0.261 
• R-Value Work: 0.197 
• R-Value Observed: 0.197 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.35	α = 90
b = 43.35	β = 90
c = 124.22	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-03-02 
Deposition Author(s): Xu, R.-M., Koch, C., Liu, Y., Horton, J.R., Knapp, D., Nasmyth, K., Cheng, X.

Revision History  

• Version 1.0: 1999-03-02
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references