1I7O

CRYSTAL STRUCTURE OF HPCE

• PDB DOI: https://doi.org/10.2210/pdb1I7O/pdb

• Classification: ISOMERASE, LYASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2001-03-10 Released: 2001-03-28 
• Deposition Author(s): Tame, J.R.H., Namba, K., Dodson, E.J., Roper, D.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.278 
• R-Value Work: 0.251 
• R-Value Observed: 0.253 

Literature

The crystal structure of HpcE, a multi-functional enzyme fold

Tame, J.R.H., Namba, K., Dodson, E.J., Roper, D.I.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Biological Assembly 3  

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

Biological assembly 3 assigned by authors.

Biological Assembly 4  

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

Biological assembly 4 assigned by authors.

Macromolecule Content

• Total Structure Weight: 188.78 kDa 
• Atom Count: 13,619 
• Modelled Residue Count: 1,684 
• Deposited Residue Count: 1,716 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
4-HYDROXYPHENYLACETATE DEGRADATION BIFUNCTIONAL ISOMERASE/DECARBOXYLASE	A, B, C, D	429	Escherichia coli	Mutation(s): 0  EC: 5.3.3.10 (PDB Primary Data), 4.1.1.68 (PDB Primary Data)
UniProt
Find proteins for P37352 (Escherichia coli) Explore P37352  Go to UniProtKB:  P37352

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	E [auth A], F [auth B], G [auth C], H [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.278 
• R-Value Work: 0.251 
• R-Value Observed: 0.253 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 126.084	α = 90
b = 138.201	β = 90
c = 103.973	γ = 90

Software Package:

Software Name	Purpose
MAR345	data collection
DENZO	data reduction
MLPHARE	phasing
REFMAC	refinement
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-03-28 
Deposition Author(s): Tame, J.R.H., Namba, K., Dodson, E.J., Roper, D.I.

Revision History  

• Version 1.0: 2001-03-28
  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: 2017-10-04
  Changes: Advisory, Refinement description
• Version 1.4: 2024-10-23
  Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary