6CAH | pdb_00006cah

NMR-based structure of the FHA-2 domain from Mycobacterium tuberculosis ABC transporter Rv1747

• PDB DOI: https://doi.org/10.2210/pdb6CAH/pdb
• BMRB: 30399

• Classification: PROTEIN BINDING
• Organism(s): Mycobacterium tuberculosis H37Rv
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2018-01-30 Released: 2018-06-20 
• Deposition Author(s): Heinkel, F., Okon, M., Gsponer, J., McIntosh, L.P.
• Funding Organization(s): Canadian Institutes of Health Research (CIHR)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Literature

Biophysical Characterization of the Tandem FHA Domain Regulatory Module from the Mycobacterium tuberculosis ABC Transporter Rv1747.

Heinkel, F., Shen, L., Richard-Greenblatt, M., Okon, M., Bui, J.M., Gee, C.L., Gay, L.M., Alber, T., Av-Gay, Y., Gsponer, J., McIntosh, L.P.

(2018) Structure 26: 972

• PubMed: 29861345 
• DOI: https://doi.org/10.1016/j.str.2018.04.018
• Primary Citation Related Structures: 
  6CAH, 6CCD


• PubMed Abstract: 
  

  The Mycobacterium tuberculosis ATP-binding cassette transporter Rv1747 is a putative exporter of cell wall biosynthesis intermediates. Rv1747 has a cytoplasmic regulatory module consisting of two pThr-interacting Forkhead-associated (FHA) domains connected by a conformationally disordered linker with two phospho-acceptor threonines (pThr). The structures of FHA-1 and FHA-2 were determined by X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy, respectively. Relative to the canonical 11-strand β-sandwich FHA domain fold of FHA-1, FHA-2 is circularly permuted and lacking one β-strand. Nevertheless, the two share a conserved pThr-binding cleft. FHA-2 is less stable and more dynamic than FHA-1, yet binds model pThr peptides with moderately higher affinity (∼50 μM versus 500 μM equilibrium dissociation constants). Based on NMR relaxation and chemical shift perturbation measurements, when joined within a polypeptide chain, either FHA domain can bind either linker pThr to form intra- and intermolecular complexes. We hypothesize that this enables tunable phosphorylation-dependent multimerization to regulate Rv1747 transporter activity.

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Organizational Affiliation: 
• Genome Science and Technology Program, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
Division of Infectious Diseases, Department of Medicine, University of British Columbia, Vancouver, BC V6H 3Z6, Canada; Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada; Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada.
Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.
Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada. Electronic address: [e-mail].
Michael Smith Laboratories, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC V6T 1Z3, Canada; Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada. Electronic address: [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 11.6 kDa 
• Atom Count: 814 
• Modeled Residue Count: 108 
• Deposited Residue Count: 108 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ABC transporter ATP-binding/permease protein Rv1747	A	108	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: Rv1747 EC: 3.6.3 (PDB Primary Data), 7 (UniProt)
UniProt
Find proteins for O65934 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore O65934  Go to UniProtKB:  O65934

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2018-06-20 
Deposition Author(s): Heinkel, F., Okon, M., Gsponer, J., McIntosh, L.P.

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Funding Organization	Location	Grant Number
Canadian Institutes of Health Research (CIHR)	Canada	--

Revision History  

• Version 1.0: 2018-06-20
  Type: Initial release
  
• Version 1.1: 2018-07-18
  Changes: Data collection, Database references
• Version 1.2: 2020-01-08
  Changes: Author supporting evidence, Data collection
• Version 1.3: 2023-06-14
  Changes: Database references, Other
• Version 1.4: 2024-05-15
  Changes: Data collection, Database references