6YDM

beta-phosphoglucomutase from Lactococcus lactis with citrate, tris and acetate bound


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.230 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Allomorphy as a mechanism of post-translational control of enzyme activity.

Wood, H.P.Cruz-Navarrete, F.A.Baxter, N.J.Trevitt, C.R.Robertson, A.J.Dix, S.R.Hounslow, A.M.Cliff, M.J.Waltho, J.P.

(2020) Nat Commun 11: 5538-5538

  • DOI: https://doi.org/10.1038/s41467-020-19215-9
  • Primary Citation of Related Structures:  
    6YDJ, 6YDK, 6YDL, 6YDM

  • PubMed Abstract: 

    Enzyme regulation is vital for metabolic adaptability in living systems. Fine control of enzyme activity is often delivered through post-translational mechanisms, such as allostery or allokairy. β-phosphoglucomutase (βPGM) from Lactococcus lactis is a phosphoryl transfer enzyme required for complete catabolism of trehalose and maltose, through the isomerisation of β-glucose 1-phosphate to glucose 6-phosphate via β-glucose 1,6-bisphosphate. Surprisingly for a gatekeeper of glycolysis, no fine control mechanism of βPGM has yet been reported. Herein, we describe allomorphy, a post-translational control mechanism of enzyme activity. In βPGM, isomerisation of the K145-P146 peptide bond results in the population of two conformers that have different activities owing to repositioning of the K145 sidechain. In vivo phosphorylating agents, such as fructose 1,6-bisphosphate, generate phosphorylated forms of both conformers, leading to a lag phase in activity until the more active phosphorylated conformer dominates. In contrast, the reaction intermediate β-glucose 1,6-bisphosphate, whose concentration depends on the β-glucose 1-phosphate concentration, couples the conformational switch and the phosphorylation step, resulting in the rapid generation of the more active phosphorylated conformer. In enabling different behaviours for different allomorphic activators, allomorphy allows an organism to maximise its responsiveness to environmental changes while minimising the diversion of valuable metabolites.


  • Organizational Affiliation

    Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, The University of Sheffield, Sheffield, S10 2TN, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-phosphoglucomutase
A, B
221Lactococcus lactis subsp. lactis Il1403Mutation(s): 2 
Gene Names: pgmBLL0429L0001
EC: 5.4.2.6
UniProt
Find proteins for P71447 (Lactococcus lactis subsp. lactis (strain IL1403))
Explore P71447 
Go to UniProtKB:  P71447
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP71447
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CIT (Subject of Investigation/LOI)
Query on CIT

Download Ideal Coordinates CCD File 
C [auth A]CITRIC ACID
C6 H8 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-N
TRS (Subject of Investigation/LOI)
Query on TRS

Download Ideal Coordinates CCD File 
I [auth B]2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
PDO
Query on PDO

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F [auth A]1,3-PROPANDIOL
C3 H8 O2
YPFDHNVEDLHUCE-UHFFFAOYSA-N
EDO
Query on EDO

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J [auth B]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
ACT
Query on ACT

Download Ideal Coordinates CCD File 
E [auth A],
H [auth B]
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
MG (Subject of Investigation/LOI)
Query on MG

Download Ideal Coordinates CCD File 
D [auth A],
G [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.13α = 90
b = 76.64β = 90
c = 117.26γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
xia2data scaling
MOLREPphasing
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomX/009906-20-26
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/M021637/1
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/S007965/1
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/P007066/1
Consejo Nacional de Ciencia y Tecnologia (CONACYT)Mexico472448
Royal SocietyUnited KingdomR/152968

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-28
    Type: Initial release
  • Version 1.1: 2020-11-18
    Changes: Database references
  • Version 1.2: 2024-01-24
    Changes: Data collection, Database references, Refinement description