1ATP

2.2 angstrom refined crystal structure of the catalytic subunit of cAMP-dependent protein kinase complexed with MNATP and a peptide inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Work: 0.177 

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This is version 1.4 of the entry. See complete history


Literature

2.2 A refined crystal structure of the catalytic subunit of cAMP-dependent protein kinase complexed with MnATP and a peptide inhibitor.

Zheng, J.Trafny, E.A.Knighton, D.R.Xuong, N.H.Taylor, S.S.Ten Eyck, L.F.Sowadski, J.M.

(1993) Acta Crystallogr D Biol Crystallogr 49: 362-365

  • DOI: https://doi.org/10.1107/S0907444993000423
  • Primary Citation of Related Structures:  
    1ATP

  • PubMed Abstract: 

    . The crystal structure of a ternary complex containing the catalytic subunit of cAMP-dependent protein kinase, ATP and a 20-residue inhibitor peptide was refined at a resolution of 2.2 A to an R value of 0.177. In order to identify the metal binding sites, the crystals, originally grown in the presence of low concentrations of Mg(2+), were soaked in Mn(2+). Two Mn(2+) ions were identified using an anomalous Fourier map. One Mn(2+) ion bridges the gamma- and beta-phosphates and interacts with Asp184 and two water molecules. The second Mn(2+) ion interacts with the side chains of Asn171 and Asp l84 as well as with a water molecule. Modeling a serine into the P site of the inhibitor peptide suggests a mechanism for phosphotransfer.


  • Organizational Affiliation

    Department of Chemistry, University of California, San Diego, La Jolla 92093-0654, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
cAMP-DEPENDENT PROTEIN KINASEA [auth E]350Mus musculusMutation(s): 0 
EC: 2.7.1.37
UniProt
Find proteins for P05132 (Mus musculus)
Explore P05132 
Go to UniProtKB:  P05132
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP05132
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PEPTIDE INHIBITOR PKI(5-24)B [auth I]20Mus musculusMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P63248 (Mus musculus)
Explore P63248 
Go to UniProtKB:  P63248
IMPC:  MGI:104747
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63248
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChains TypeFormula2D DiagramParent
SEP
Query on SEP
A [auth E]L-PEPTIDE LINKINGC3 H8 N O6 PSER
TPO
Query on TPO
A [auth E]L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Binding Affinity Annotations 
IDSourceBinding Affinity
ATP Binding MOAD:  1ATP Kd: 60 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Work: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.58α = 90
b = 76.28β = 90
c = 80.58γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
TNTrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1993-04-15
    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: 2019-07-17
    Changes: Data collection, Derived calculations, Other, Refinement description
  • Version 1.4: 2019-08-14
    Changes: Data collection, Refinement description