2JGP

Structure of the TycC5-6 PCP-C bidomain of the tyrocidine synthetase TycC

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.208 

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This is version 1.2 of the entry. See complete history. 

Literature

Structural and Functional Insights Into a Peptide Bond-Forming Bidomain from a Nonribosomal Peptide Synthetase.

Samel, S.A., Schoenafinger, G., Knappe, T.A., Marahiel, M.A., Essen, L.-O.

(2007) Structure 15: 781

  • DOI: 10.1016/j.str.2007.05.008

  • PubMed Abstract: 

    • The crystal structure of the bidomain PCP-C from modules 5 and 6 of the nonribosomal tyrocidine synthetase TycC was determined at 1.8 A resolution. The bidomain structure reveals a V-shaped condensation domain, the canyon-like active site groove of w ...

    The crystal structure of the bidomain PCP-C from modules 5 and 6 of the nonribosomal tyrocidine synthetase TycC was determined at 1.8 A resolution. The bidomain structure reveals a V-shaped condensation domain, the canyon-like active site groove of which is associated with the preceding peptidyl carrier protein (PCP) domain at its donor side. The relative arrangement of the PCP and the peptide bond-forming condensation (C) domain places the active sites approximately 50 A apart. Accordingly, this PCP-C structure represents a conformational state prior to peptide transfer from the donor-PCP to the acceptor-PCP domain, implying the existence of additional states of PCP-C domain interaction during catalysis. Additionally, PCP-C exerts a mode of cyclization activity that mimics peptide bond formation catalyzed by C domains. Based on mutational data and pK value analysis of active site residues, it is suggested that nonribosomal peptide bond formation depends on electrostatic interactions rather than on general acid/base catalysis.

    Organizational Affiliation: 

    Department of Chemistry/Biochemistry, Philipps-Universität, Hans-Meerwein-Strasse, D-35032 Marburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TYROCIDINE SYNTHETASE 3
A
520Brevibacillus parabrevisGene Names: tycC
Find proteins for O30409 (Brevibacillus parabrevis)
Go to UniProtKB:  O30409
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA
Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4
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Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
DIO
Query on DIO
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Download CCD File 
A
1,4-DIETHYLENE DIOXIDE
C4 H8 O2
RYHBNJHYFVUHQT-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.208 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 84.973α = 90.00
b = 84.973β = 90.00
c = 164.969γ = 90.00
Software Package:
Software NamePurpose
SHELXphasing
SCALAdata scaling
MOSFLMdata reduction
SHARPphasing
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2012-06-13
    Type: Other