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The Open Protein Structure Annotation Network
PDB Keyword
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2qjv

    Table of contents
    1. 1. Protein Summary
    2. 2. Ligand Summary
    3. 3. References

    Title Crystal structure of uncharacterized IolB-like protein (16422983) from Salmonella typhimurium LT2 at 1.90 A resolution. To be published
    Site JCSG
    PDB Id 2qjv Target Id
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    Molecular Characteristics
    Source
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    Alias Ids
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    TPS1624,16422983, PF06845
    Molecular Weight
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    Da.
    Residues
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    Isoelectric Point
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    Sequence
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      BLAST   FFAS

    Structure Determination
    Method XRAY
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    Chains 2
    Resolution (Å)
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    Rfree
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    Matthews' coefficent Rfactor 0.160
    Waters
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    Solvent Content

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    Ligand Information
    Ligands
    Metals

    Jmol

     
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    Google Scholar output for 2qjv
    1. Ligands in PSI structures
    A Kumar, HJ Chiu, HL Axelrod, A Morse - Section F: Structural , 2010 - scripts.iucr.org
     

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    Protein Summary

    The STM4420 gene (PF04962, cl01508) from Salmonella typhimurium LT2 encodes the protein NP_463281 involved in the bacterial myo-inositol catabolism (IolB proteins) [Ref]. Genome context analysis indicates a functional linkage (score 0.97) with the inosose dehydratase IolE (STM4424).

    2qjv is an all beta protein structure with a RmlC-like cupin fold and CATH divides each chain in two jelly roll domains (2qjv-CATH). 2qjv Dali top hit with a Z-scr=25 is with the E. coli 5-keto-4-deoxyuronate isomerase

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    [Ref]. The associated publication does not provide a structure with a substrate bound. However, the authors identify the the protein as a metalloprotein with a Zn2+ metal ion binding site given by residues His-196, His-198, Glu-203, and His-245. In the JCSG protein structure there is also a metal ion (Ni2+) found at an equivalent position. The ligating residues are conserved and identified as His-170, His-172, Glu-185, and His-228 in 2qjv.

    The SEED annotates 2qjv as a 5-deoxy-glucuronate isomerase. For a comprehensive description of the iolA-J operon in Bacillus subtilis, see [Ref].

    Other PSI structures with similar structures to 2qjv are 1sef (Dali Z-scr=20) and 1x8m (Dali Z-scr=22). 

    Ligand Summary


    References

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    References

     

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