8Z9B | pdb_00008z9b

Low molecular weight antigen MTB12


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 
    0.304 (Depositor), 0.305 (DCC) 
  • R-Value Work: 
    0.278 (Depositor), 0.272 (DCC) 

Starting Model: in silico
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wwPDB Validation 3D Report Full Report

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This is version 1.1 of the entry. See complete history

Literature

Novel structure of secreted small molecular weight antigen Mtb12 from Mycobacterium tuberculosis.

Han, J.H.Kim, D.Y.Lee, S.Y.Park, H.H.

(2024) Biochem Biophys Res Commun 717: 150040-150040

  • DOI: https://doi.org/10.1016/j.bbrc.2024.150040
  • Primary Citation Related Structures: 
    8Z9B

  • PubMed Abstract: 

    Mtb12, a small protein secreted by Mycobacterium tuberculosis, is known to elicit immune responses in individuals infected with the pathogen. It serves as an antigen recognized by the host's immune system. Due to its immunogenic properties and pivotal role in tuberculosis (TB) pathogenesis, Mtb12 is considered a promising candidate for TB diagnosis and vaccine development. However, the structural and functional properties of Mtb12 are largely unexplored, representing a significant gap in our understanding of M. tuberculosis biology. In this study, we present the first structure of Mtb12, which features a unique tertiary configuration consisting of four beta strands and four alpha helices. Structural analysis reveals that Mtb12 has a surface adorned with a negatively charged pocket adjacent to a central cavity. The features of these structural elements and their potential effects on the function of Mtb12 warrant further exploration. These findings offer valuable insights for vaccine design and the development of diagnostic tools.


  • Organizational Affiliation
    • College of Pharmacy, Chung-Ang University, Seoul, 06974, Republic of Korea; Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, 06974, Republic of Korea.

Macromolecule Content 

  • Total Structure Weight: 27.71 kDa 
  • Atom Count: 1,620 
  • Modeled Residue Count: 228 
  • Deposited Residue Count: 270 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Low molecular weight antigen MTB12A [auth B],
B [auth A]
135Mycobacterium tuberculosis CDC1551Mutation(s): 0 
Gene Names: mtb12cfp2MT2445
UniProt
Find proteins for P9WIN6 (Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh))
Explore P9WIN6 
Go to UniProtKB:  P9WIN6
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WIN6
Sequence Annotations
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Reference Sequence

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free:  0.304 (Depositor), 0.305 (DCC) 
  • R-Value Work:  0.278 (Depositor), 0.272 (DCC) 
Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.67α = 90
b = 100.67β = 90
c = 98.53γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHENIXphasing

Structure Validation

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Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of--

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-29
    Type: Initial release
  • Version 1.1: 2024-07-10
    Changes: Source and taxonomy