1E2A

ENZYME IIA FROM THE LACTOSE SPECIFIC PTS FROM LACTOCOCCUS LACTIS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.190 
  • R-Value Observed: 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

  • DOI: 10.1016/s0969-2126(97)00232-3
  • Primary Citation of Related Structures:  
    1E2A

  • 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 and transcriptional processes ...

    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 D Biol Crystallogr 52: 1199

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENZYME IIAA, B, C105Lactococcus lactisMutation(s): 0 
Gene Names: lacF
EC: 2.7.1.69
UniProt
Find proteins for P23532 (Lactococcus lactis subsp. lactis)
Explore P23532 
Go to UniProtKB:  P23532
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download Ideal Coordinates CCD File 
D [auth C]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.9α = 90
b = 90.9β = 90
c = 82.4γ = 90
Software Package:
Software NamePurpose
PHASESphasing
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

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