1E2A

ENZYME IIA FROM THE LACTOSE SPECIFIC PTS FROM LACTOCOCCUS LACTIS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of enzyme IIAlactose from Lactococcus lactis reveals a new fold and points to possible interactions of a multicomponent system.

Sliz, P.Engelmann, R.Hengstenberg, W.Pai, E.F.

(1997) Structure 5: 775-788


  • PubMed Abstract: 
  • The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is responsible for the binding, transmembrane transport and phosphorylation of numerous sugar substrates. The system is also involved in the regulation of a variety of metabolic ...

    The bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS) is responsible for the binding, transmembrane transport and phosphorylation of numerous sugar substrates. The system is also involved in the regulation of a variety of metabolic and transcriptional processes. The PTS consists of two non-specific energy coupling components, enzyme I and a heat stable phosphocarrier protein (HPr), as well as several sugar-specific multiprotein permeases known as enzymes II. In most cases, enzymes IIA and IIB are located in the cytoplasm, while enzyme IIC acts as a membrane channel. Enzyme IIAlactose belongs to the lactose/cellobiose-specific family of enzymes II, one of four functionally and structurally distinct groups. The protein, which normally functions as a trimer, is believed to separate into its subunits after phosphorylation.


    Related Citations: 
    • Crystallization and Preliminary Structural Studies of Lactose-Specific Enzyme Iia from Lactococcus Lactis
      Sliz, P.,Schorter, K.H.,De Vos, W.M.,Pai, E.F.
      (1996) Acta Crystallogr.,Sect.D 52: 1199


    Organizational Affiliation

    Department of Biochemistry, University of Toronto, ON, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENZYME IIA
A, B, C
105Lactococcus lactis subsp. lactisGene Names: lacF
EC: 2.7.1.-
Find proteins for P23532 (Lactococcus lactis subsp. lactis)
Go to UniProtKB:  P23532
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.190 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 90.900α = 90.00
b = 90.900β = 90.00
c = 82.400γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
PHASESphasing
X-PLORmodel building
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-04-29
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance