1IP9 | pdb_00001ip9

SOLUTION STRUCTURE OF THE PB1 DOMAIN OF BEM1P

• PDB DOI: https://doi.org/10.2210/pdb1IP9/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2001-04-26 Released: 2001-08-15 
• Deposition Author(s): Terasawa, H., Noda, Y., Ito, T., Hatanaka, H., Ichikawa, S., Ogura, K., Sumimoto, H., Inagaki, F.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structure and ligand recognition of the PB1 domain: a novel protein module binding to the PC motif.

Terasawa, H., Noda, Y., Ito, T., Hatanaka, H., Ichikawa, S., Ogura, K., Sumimoto, H., Inagaki, F.

(2001) EMBO J 20: 3947-3956

• PubMed: 11483498 
• DOI: https://doi.org/10.1093/emboj/20.15.3947
• Primary Citation Related Structures: 
  1IP9, 1IPG


• PubMed Abstract: 
  

  PB1 domains are novel protein modules capable of binding to target proteins that contain PC motifs. We report here the NMR structure and ligand-binding site of the PB1 domain of the cell polarity establishment protein, Bem1p. In addition, we identify the topology of the PC motif-containing region of Cdc24p by NMR, another cell polarity establishment protein that interacts with Bem1p. The PC motif-containing region is a structural domain offering a scaffold to the PC motif. The chemical shift perturbation experiment and the mutagenesis study show that the PC motif is a major structural element that binds to the PB1 domain. A structural database search reveals close similarity between the Bem1p PB1 domain and the c-Raf1 Ras-binding domain. However, these domains are functionally distinct from each other.

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Organizational Affiliation: 
• Tokyo Metropolitan Institute of Medical Science, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo 113-8613, Japan.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 9.52 kDa 
• Atom Count: 668 
• Modeled Residue Count: 85 
• Deposited Residue Count: 85 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BEM1 PROTEIN	A	85	Saccharomyces cerevisiae	Mutation(s): 0
UniProt
Find proteins for P29366 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P29366  Go to UniProtKB:  P29366

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-08-15 
Deposition Author(s): Terasawa, H., Noda, Y., Ito, T., Hatanaka, H., Ichikawa, S., Ogura, K., Sumimoto, H., Inagaki, F.

Revision History  

• Version 1.0: 2001-08-15
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Database references, Derived calculations
• Version 1.4: 2023-12-27
  Changes: Data collection