2YI1

Crystal structure of N-Acetylmannosamine kinase in complex with N- acetyl mannosamine 6-phosphate and ADP.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structures of N-Acetylmannosamine Kinase Provide Insights Into Enzyme Specificity and Inhibition

Martinez, J.Nguyen, L.D.Tauberger, E.Hinderlich, S.Reutter, W.Fan, H.Saenger, W.Moniot, S.

(2012) J.Biol.Chem. 287: 13656

  • DOI: 10.1074/jbc.M111.318170
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Sialic acids are essential components of membrane glycoconjugates. They are responsible for the interaction, structure, and functionality of all deuterostome cells and have major functions in cellular processes in health and diseases. The key enzyme ...

    Sialic acids are essential components of membrane glycoconjugates. They are responsible for the interaction, structure, and functionality of all deuterostome cells and have major functions in cellular processes in health and diseases. The key enzyme of the biosynthesis of sialic acid is the bifunctional UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase that transforms UDP-N-acetylglucosamine to N-acetylmannosamine (ManNAc) followed by its phosphorylation to ManNAc 6-phosphate and has a direct impact on the sialylation of cell surface components. Here, we present the crystal structures of the human N-acetylmannosamine kinase (MNK) domain of UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase in complexes with ManNAc at 1.64 Å resolution, MNK·ManNAc·ADP (1.82 Å) and MNK·ManNAc 6-phosphate · ADP (2.10 Å). Our findings offer detailed insights in the active center of MNK and serve as a structural basis to design inhibitors. We synthesized a novel inhibitor, 6-O-acetyl-ManNAc, which is more potent than those previously tested. Specific inhibitors of sialic acid biosynthesis may serve to further study biological functions of sialic acid.


    Organizational Affiliation

    From the Institut für Chemie und Biochemie-Kristallographie, Freie Universität Berlin, Takustrasse 6, 14195 Berlin.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BIFUNCTIONAL UDP-N-ACETYLGLUCOSAMINE 2-EPIMERASE/N-ACETYLMANNOSAMINE KINASE
A
343Homo sapiensMutation(s): 0 
Gene Names: GNE (GLCNE)
Find proteins for Q9Y223 (Homo sapiens)
Go to Gene View: GNE
Go to UniProtKB:  Q9Y223
Small Molecules
Ligands 10 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

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A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
ADP
Query on ADP

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A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
BM3
Query on BM3

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A
2-(ACETYLAMINO)-2-DEOXY-ALPHA-D-MANNOPYRANOSE
C8 H15 N O6
OVRNDRQMDRJTHS-UOLFYFMNSA-N
 Ligand Interaction
CA
Query on CA

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A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
2PE
Query on 2PE

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A
NONAETHYLENE GLYCOL
C18 H38 O10
YZUUTMGDONTGTN-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

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A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

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A
TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
BMX
Query on BMX

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A
2-(ACETYLAMINO)-2-DEOXY-6-O-PHOSPHONO-ALPHA-D-MANNOPYRANOSE
C8 H16 N O9 P
BRGMHAYQAZFZDJ-UOLFYFMNSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.15 Å
  • R-Value Free: 0.191 
  • R-Value Work: 0.167 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 90.700α = 90.00
b = 90.700β = 90.00
c = 101.490γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
REFMACrefinement
PHASERphasing
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-29
    Type: Initial release
  • Version 1.1: 2012-03-14
    Type: Other
  • Version 1.2: 2012-05-02
    Type: Other