3NRK

The crystal structure of the leptospiral hypothetical protein LIC12922

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.200 

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This is version 1.1 of the entry. See complete history. 


Literature

The crystal structure of the leptospiral hypothetical protein LIC12922 reveals homology with the periplasmic chaperone SurA.

Giuseppe, P.O., Von Atzingen, M., Nascimento, A.L., Zanchin, N.I., Guimaraes, B.G.

(2011) J Struct Biol 173: 312-322

  • DOI: 10.1016/j.jsb.2010.10.009
  • Primary Citation of Related Structures:  
    3NRK

  • PubMed Abstract: 

    • Leptospirosis is a world spread zoonosis caused by members of the genus Leptospira. Although leptospires were identified as the causal agent of leptospirosis almost 100 years ago, little is known about their biology, which hinders the development of new treatment and prevention strategies ...

    Leptospirosis is a world spread zoonosis caused by members of the genus Leptospira. Although leptospires were identified as the causal agent of leptospirosis almost 100 years ago, little is known about their biology, which hinders the development of new treatment and prevention strategies. One of the several aspects of the leptospiral biology not yet elucidated is the process by which outer membrane proteins (OMPs) traverse the periplasm and are inserted into the outer membrane. The crystal structure determination of the conserved hypothetical protein LIC12922 from Leptospira interrogans revealed a two domain protein homologous to the Escherichia coli periplasmic chaperone SurA. The LIC12922 NC-domain is structurally related to the chaperone modules of E. coli SurA and trigger factor, whereas the parvulin domain is devoid of peptidyl prolyl cis-trans isomerase activity. Phylogenetic analyses suggest a relationship between LIC12922 and the chaperones PrsA, PpiD and SurA. Based on our structural and evolutionary analyses, we postulate that LIC12922 is a periplasmic chaperone involved in OMPs biogenesis in Leptospira spp. Since LIC12922 homologs were identified in all spirochetal genomes sequenced to date, this assumption may have implications for the OMPs biogenesis studies not only in leptospires but in the entire Phylum Spirochaetes.

    Organizational Affiliation: 

    Brazilian Biosciences National Laboratory (LNBio), Brazilian Center of Research in Energy and Materials (CNPEM), Giuseppe Máximo Scolfaro 10000, 13083-970 Campinas, SP, Brazil.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
LIC12922A325Leptospira interrogans serovar Copenhageni str. Fiocruz L1-130Mutation(s): 0 
Gene Names: LIC12922, LIC_12922
UniProt
Find proteins for Q72NB3 (Leptospira interrogans serogroup Icterohaemorrhagiae serovar copenhageni (strain Fiocruz L1-130))
Explore Q72NB3 
Go to UniProtKB:  Q72NB3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ72NB3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.200 
  • Space Group: P 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 137.11α = 90
b = 137.11β = 90
c = 137.11γ = 90
Software Package:
Software NamePurpose
SHARPphasing
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-11-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance