Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 11297.81 
• Atom Count: 774 
• Residue Count: 99 
• Unique protein chains: 1

2W4P

Human common-type acylphosphatase variant, A99G

• DOI: 10.2210/pdb2W4P/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): 1 


• Deposited: 2008-11-29 Released: 2009-12-29 
• Deposition Author(s): Lam, S.Y., Sze, K.H., Wong, K.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.7 Å
• R-Value Free: 0.241 
• R-Value Work: 0.187 

Literature

A Rigidifying Salt-Bridge Favors the Activity of Thermophilic Enzyme at High Temperatures at the Expense of Low-Temperature Activity.

Lam, S.Y., Yeung, R.C.Y., Yu, T., Sze, K.H., Wong, K.B.

(2011) Plos Biol. 9: 1027

• PubMed: 21423654 
• DOI: 10.1371/journal.pbio.1001027
• Primary Citation of Related Structures:  
  2W4D, 2W4C, 2VH7


• PubMed Abstract: 
  

Thermophilic enzymes are often less active than their mesophilic homologues at low temperatures. One hypothesis to explain this observation is that the extra stabilizing interactions increase the rigidity of thermophilic enzymes and hence reduce their activity. Here we employed a thermophilic acylphosphatase from Pyrococcus horikoshii and its homologous mesophilic acylphosphatase from human as a model to study how local rigidity of an active-site residue affects the enzymatic activity.

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Related Citations: 

• Crystallization and Preliminary Crystallographic Analysis of Human Common-Type Acylphosphatase.
  Yeung, R.C.Y.,Lam, S.Y.,Wong, K.
  (2006) Acta Crystallogr.,Sect.F 62: 80




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Organizational Affiliation: 

School of Life Sciences, Centre for Protein Science and Crystallography, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
ACYLPHOSPHATASE-1	A	99	Homo sapiens	Mutation(s): 1  Gene Names: ACYP1 (ACYPE) EC: 3.6.1.7
Find proteins for P07311 (Homo sapiens) Go to Gene View: ACYP1 Go to UniProtKB:  P07311

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
GOL	A	GLYCEROL GLYCERIN; PROPANE-1,2,3-TRIOL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.7 Å
• R-Value Free: 0.241 
• R-Value Work: 0.187 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 24.206	α = 90.00
b = 57.339	β = 90.00
c = 58.777	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
MOSFLM	data reduction
MOLREP	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2008-11-29 
• Released Date: 2009-12-29 
• Deposition Author(s): Lam, S.Y., Sze, K.H., Wong, K.B.

Revision History 

• Version 1.0: 2009-12-29
  Type: Initial release
• Version 1.1: 2012-02-01
  Type: Database references, Derived calculations, Version format compliance