1BRT | pdb_00001brt

BROMOPEROXIDASE A2 MUTANT M99T

• PDB DOI: https://doi.org/10.2210/pdb1BRT/pdb

• Classification: HALOPEROXIDASE
• Organism(s): Kitasatospora aureofaciens
• Expression System: Streptomyces lividans
• Mutation(s): Yes 


• Deposited: 1998-03-30 Released: 1998-06-17 
• Deposition Author(s): Hofmann, B., Toelzer, S., Pelletier, I., Altenbuchner, J., Van Pee, K.H., Hecht, H.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.164 (Depositor) 
• R-Value Work: 
  0.147 (Depositor), 0.132 (DCC) 
• R-Value Observed: 
  0.140 (Depositor) 

Starting Model: experimental

Literature

Structural investigation of the cofactor-free chloroperoxidases.

Hofmann, B., Tolzer, S., Pelletier, I., Altenbuchner, J., van Pee, K.H., Hecht, H.J.

(1998) J Mol Biology 279: 889-900

• PubMed: 9642069 
• DOI: https://doi.org/10.1006/jmbi.1998.1802
• Primary Citation Related Structures: 
  1A7U, 1A88, 1A8Q, 1A8S, 1A8U, 1BRT


• PubMed Abstract: 
  

  The structures of cofactor-free haloperoxidases from Streptomyces aureofaciens, Streptomyces lividans, and Pseudomonas fluorescens have been determined at resolutions between 1.9 A and 1.5 A. The structures of two enzymes complexed with benzoate or propionate identify the binding site for the organic acids which are required for the haloperoxidase activity. Based on these complexes and on the structure of an inactive variant, a reaction mechanism is proposed for the halogenation reaction with peroxoacid and hypohalous acid as reaction intermediates. Comparison of the structures suggests that a specific halide binding site is absent in the enzymes but that hydrophobic organic compounds may fit into the active site pocket for halogenation at preferential sites.

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Organizational Affiliation: 
• Department SF, GBF (Gesellschaft für Biotechnologische Forschung), Mascheroder Weg 1, Braunschweig, D-38124, FRG.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 30.28 kDa 
• Atom Count: 2,393 
• Modeled Residue Count: 277 
• Deposited Residue Count: 277 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BROMOPEROXIDASE A2	A	277	Kitasatospora aureofaciens	Mutation(s): 1  Gene Names: BPOA2 EC: 1.11.1.10 (PDB Primary Data), 1.11.1 (UniProt)
UniProt
Find proteins for P29715 (Kitasatospora aureofaciens) Explore P29715  Go to UniProtKB:  P29715

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.164 (Depositor) 
• R-Value Work:  0.147 (Depositor), 0.132 (DCC) 
• R-Value Observed: 0.140 (Depositor) 

Space Group: I 2 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 121.72	α = 90
b = 121.72	β = 90
c = 121.72	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-06-17 
Deposition Author(s): Hofmann, B., Toelzer, S., Pelletier, I., Altenbuchner, J., Van Pee, K.H., Hecht, H.J.

Revision History  

• Version 1.0: 1998-06-17
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations
• Version 1.4: 2023-08-09
  Changes: Refinement description
• Version 1.5: 2024-05-22
  Changes: Data collection