1T1U

Structural Insights and Functional Implications of Choline Acetyltransferase

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.171 

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


Literature

Structural insights and functional implications of choline acetyltransferase

Govindasamy, L., Pedersen, B., Lian, W., Kukar, T., Gu, Y., Jin, S., Agbandje-McKenna, M., Wu, D.

(2004) J Struct Biol 148: 226-235

  • DOI: 10.1016/j.jsb.2004.06.005
  • Primary Citation of Related Structures:  
    1T1U

  • PubMed Abstract: 

    • The biosynthetic enzyme for the neurotransmitter acetylcholine, choline acetyltransferase (ChAT) (E.C. 2.3.1.6), is essential for the development and neuronal activities of cholinergic systems involved in many fundamental brain functions. ChAT catalyzes the transfer of an acetyl group from acetyl-coenzyme A to choline to form the neurotransmitter acetylcholine ...

    The biosynthetic enzyme for the neurotransmitter acetylcholine, choline acetyltransferase (ChAT) (E.C. 2.3.1.6), is essential for the development and neuronal activities of cholinergic systems involved in many fundamental brain functions. ChAT catalyzes the transfer of an acetyl group from acetyl-coenzyme A to choline to form the neurotransmitter acetylcholine. Since its discovery more than 60 years ago much research has been devoted to the kinetic studies of this enzyme. For the first time we report the crystal structure of rat ChAT (rChAT) to 1.55 A resolution. The structure of rChAT is a monomer and consists of two domains with an interfacial active site tunnel. This structure, with the modeled substrate binding, provides critical insights into the molecular basis for the production of acetylcholine and may further our understanding of disease causing mutations.

    Organizational Affiliation: 

    Department of Biochemistry and Molecular Biology, McKnight Brain Institute and University of Florida, Gainesville, FL 32610, USA.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Choline O-acetyltransferaseA639Rattus norvegicusMutation(s): 0 
Gene Names: Chat
EC: 2.3.1.6
UniProt
Find proteins for P32738 (Rattus norvegicus)
Explore P32738 
Go to UniProtKB:  P32738
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP32738
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.171 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.949α = 90
b = 77.505β = 90
c = 59.209γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
REFMACrefinement
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-04-12
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance