5W4S

Solution structure of C2 domain from protein kinase C alpha in ternary complex with calcium and V5-pHM peptide

  • Classification: TRANSFERASE
  • Organism(s): Rattus norvegicus
  • Expression System: Escherichia coli

  • Deposited: 2017-06-12 Released: 2018-04-25 
  • Deposition Author(s): Yang, Y., Igumenova, T.I.
  • Funding Organization(s): Welch Foundation; National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS); National Science Foundation (NSF, United States) 

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis of Protein Kinase C alpha Regulation by the C-Terminal Tail.

Yang, Y.Shu, C.Li, P.Igumenova, T.I.

(2018) Biophys. J. 114: 1590-1603

  • DOI: 10.1016/j.bpj.2017.12.030

  • PubMed Abstract: 
  • Protein kinase C (PKC) isoenzymes are multi-modular proteins activated at the membrane surface to regulate signal transduction processes. When activated by second messengers, PKC undergoes a drastic conformational and spatial transition from the inac ...

    Protein kinase C (PKC) isoenzymes are multi-modular proteins activated at the membrane surface to regulate signal transduction processes. When activated by second messengers, PKC undergoes a drastic conformational and spatial transition from the inactive cytosolic state to the activated membrane-bound state. The complete structure of either state of PKC remains elusive. We demonstrate, using NMR spectroscopy, that the isolated Ca 2+ -sensing membrane-binding C2 domain of the conventional PKCĪ± interacts with a conserved hydrophobic motif of the kinase C-terminal region, and we report a structural model of the complex. Our data suggest that the C-terminal region plays a dual role in regulating the PKC activity: activating, through sensitization of PKC to intracellular Ca 2+ oscillations; and auto-inhibitory, through its interaction with a conserved positively charged region of the C2 domain.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas. Electronic address: tigumenova@tamu.edu.,Department of Biochemistry and Biophysics, Texas A&M University, College Station, Texas.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein kinase C alpha type
A
139Rattus norvegicusMutation(s): 0 
Gene Names: Prkca (Pkca)
EC: 2.7.11.13
Find proteins for P05696 (Rattus norvegicus)
Go to UniProtKB:  P05696
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
V5-pHM peptide
B
12Rattus norvegicusMutation(s): 0 
Gene Names: Prkca (Pkca)
EC: 2.7.11.13
Find proteins for P05696 (Rattus norvegicus)
Go to UniProtKB:  P05696
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  3 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
B
NON-POLYMERH2 N

--

SEP
Query on SEP
B
L-PEPTIDE LINKINGC3 H8 N O6 PSER
ACE
Query on ACE
B
NON-POLYMERC2 H4 O

--

Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 400 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Welch FoundationUnited StatesA-1784
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM108998
National Science Foundation (NSF, United States)United StatesCHE-1151435

Revision History 

  • Version 1.0: 2018-04-25
    Type: Initial release
  • Version 1.1: 2019-11-27
    Type: Author supporting evidence, Data collection