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MUTAGENESIS OF THE NUCLEOPHILIC TYROSINE IN A BACTERIAL SIALIDASE TO PHENYLALANINE.
1WCQ
Primary Citation
 
 
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  •   Molecular Description Hide
    Classification: Hydrolase
    Structure Weight: 194437.31
    Molecule: SIALIDASE
    Polymer: 1 Type: protein Length: 601
    Chains: A, B, C
    EC#: 3.2.1.18   
    Fragment: SIALIDASE, RESIDUES 47-647
    Mutation: YES
    Organism Micromonospora viridifaciens
    Gene Name nedA
    UniProtKB:   Protein Feature View | Search PDB | Q02834  
     
  •   Source Hide
    Polymer: 1
    Scientific Name: Micromonospora viridifaciens   Taxonomy   Expression System: Escherichia coli  
     
  •   Related PDB Entries Hide
    Identifier Details
    1EUR  SIALIDASE 
    1EUS  SIALIDASE COMPLEXED WITH 2-DEOXY-2,3- DEHYDRO-N- ACETYLNEURAMINIC ACID 
    1EUT  SIALIDASE, LARGE 68KD FORM, COMPLEXED WITH GALACTOSE 
    1EUU  SIALIDASE OR NEURAMINIDASE, LARGE 68KD FORM 
    1W8N  CONTRIBUTION OF THE ACTIVE SITE ASPARTIC ACID TO CATALYSIS IN THE BACTERIAL NEURAMINIDASE FROM MICROMONOSPORA VIRIDIFACIENS. 
    1W8O  CONTRIBUTION OF THE ACTIVE SITE ASPARTIC ACID TO CATALYSIS IN THE BACTERIAL NEURAMINIDASE FROM MICROMONOSPORA VIRIDIFACIENS 
     
  •   Ligand Chemical Component Hide
    Identifier Formula Name Interactions
    DAN
    Search 
    Download      		DAN C11 H17 N O8
    2-DEOXY-2,3-DEHYDRO-N-ACETYL-NEURAMINIC ACID
    		DAN:1WCQ
    GOL
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    Download      		GOL C3 H8 O3
    GLYCEROL
    NA
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    Download      		NA Na
    SODIUM ION
     
  •   External Ligand Annotations Hide
    Identifier   Binding Affinity (Sequence Identity %)
    DAN
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    Download      		DAN
    N/Ain BindingDB
    Ki: 550 nM - data from BindingMOAD  
    Ki: 550 nM - data from PDBbind  
     
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  •   Structural Biology Knowledgebase Data Hide
     
 
Data in orange boxes are gathered from external resources (when available).
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  Biological Assembly 1       
Biological assembly 1 assigned by authors and generated by PQS (software)
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  •   Deposition Summary Hide
    Authors:   Newstead, S.,  Watson, J.N.,  Bennet, A.J.,  Taylor, G.

    Deposition:   2004-11-19
    Release:   2005-10-12
    Last Modified (REVDAT):   2011-07-13
     
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    2011-07-13
    Version format compliance
    2011-07-13
    Flag residual B-value
     
  •   Experimental Details Hide
    Method:   X-RAY DIFFRACTION
    Exp. Data:
      Structure Factors
    EDS  
    Resolution[Å]:   2.10
    R-Value: 0.178 (obs.)
    R-Free: 0.238
    Space Group: P 32 2 1
    Unit Cell:
      Length [Å] Angles [°]
    a = 143.26 α = 90.00 
    b = 143.26 β = 90.00 
    c = 160.25 γ = 120.00