Ribosomal protein S7 from Mycobacterium tuberculosis

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Structural insights into the complex of trigger factor chaperone and ribosomal protein S7 from Mycobacterium tuberculosis.

Li, Z.Wu, D.Zhan, B.Hu, X.Gan, J.Ji, C.Li, J.

(2019) Biochem Biophys Res Commun 512: 838-844

  • DOI: https://doi.org/10.1016/j.bbrc.2019.03.166
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Tuberculosis, caused by Mycobacterium tuberculosis (Mtb), has threaten human health for thousands years. The chaperone trigger factor (TF) of Mtb (mtbTF), a ribosome-associated molecule, plays important roles in co-translational nascent chain folding and post-translational protein assembly. However, due to lack of structural information, the dynamic regulatory mechanism of mtbTF remains barely investigated. Herein we report the structural basis of the complex of TF and ribosomal protein S7 (mtbS7) from Mtb. The mtbTF-mtbS7 complex was obtained with high purity and homogeneity in vitro. MtbTF bound with mtbS7 in a K d value of 1.433 μM, and formed a complex with mtbS7 at 1:2 M ratios as shown by isothermal titration calorimetry. In addition, the crystal structure of mtbS7 was solved to a resolution at 1.8 Å, which was composed of six α-helices and two β-strands. Moreover, the molecular envelopes of mtbTF and mtbTF-mtbS7 complex were built and consisted with these homologous structures by small-angle X-ray scattering method. Our current findings might provide structural basis for understanding the molecular mechanism of TF in protein folding and the regulation of ribosomal assembly in Mtb.

  • Organizational Affiliation

    State Key Laboratory of Genetic Engineering, School of Life Science, Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, 200438, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S7
A, B
157Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: rpsGrps7Rv0683MTV040.11
Find proteins for P9WH29 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WH29 
Go to UniProtKB:  P9WH29
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WH29
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.712α = 90
b = 58.428β = 90
c = 126.025γ = 90
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

  • Released Date: 2019-03-20 
  • Deposition Author(s): Li, Z., Li, J.

Funding OrganizationLocationGrant Number
Ministry of Science and Technology (China)China2016YFA0500600

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-20
    Type: Initial release
  • Version 1.1: 2019-04-24
    Changes: Data collection, Database references
  • Version 1.2: 2019-05-01
    Changes: Data collection, Database references
  • Version 1.3: 2023-11-22
    Changes: Data collection, Database references, Refinement description