Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.37 kDa 
• Atom Count: 590 
• Modelled Residue Count: 74 
• Deposited Residue Count: 74 
• Unique protein chains: 1

2KHR

Solution structure of Rv2377c, a MbtH-like protein from Mycobacterium tuberculosis

• PDB DOI: 10.2210/pdb2KHR/pdb
• BMRB: 16253

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


• Deposited: 2009-04-10 Released: 2009-05-05 
• Deposition Author(s): Buchko, G.W., Kim, C.Y., Terwilliger, T.C., Seattle Structural Genomics Center for Infectious Disease (SSGCID)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Solution structure of Rv2377c-founding member of the MbtH-like protein family.

Buchko, G.W., Kim, C.Y., Terwilliger, T.C., Myler, P.J.

(2010) Tuberculosis (Edinb) 90: 245-251

• PubMed: 20434955 
• DOI: 10.1016/j.tube.2010.04.002
• Primary Citation of Related Structures:  
  2KHR


• PubMed Abstract: 
  

The Mycobacterium tuberculosis protein Rv2377c (71 residues, MW=8.4kDa) has been characterized using nuclear magnetic resonance (NMR) and circular dichroism (CD) spectroscopy. Rv2377c was the first identified member of the MbtH-like family of proteins. MbtH-like proteins have been implicated in siderophore biosynthesis, however, their precise biochemical function remain unknown. Size exclusion chromatography and NMR spectroscopy show that Rv2377c is a monomer in solution. Circular dichroism spectroscopy indicates that Rv2377c unfolds upon heating and will reversibly fold into its native conformation upon cooling. Using NMR-based methods the solution structure of Rv2377c was determined and some of the dynamic properties of the protein studied. The protein contains a three-strand, anti-parallel beta-sheet (beta3:beta1:beta2) nestled against one C-terminal alpha-helix (S44-N55). Weak or absent amide cross peaks in the (1)H-(15)N HSQC spectrum for many of the beta1 and beta2 residues suggest intermediate motion on the ms to mus time scale at the beta1:beta2 interface. Amide cross peaks in the (1)H-(15)N HSQC spectrum are absent for all but one residue at the C-terminus (W56-D71), a region that includes a highly conserved sequence WXDXR, suggesting this region is intrinsically disordered. The latter observation differs with the crystal structure of another MbtH-like protein, PA2412 from Pseudomonas aeruginosa, where a second ordered alpha-helix was observed at the extreme C-terminus.

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Organizational Affiliation: 

Pacific Northwest National Laboratory, Richland, WA 99352, USA. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein mbtH	A	74	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: mbtH, MT2445.1, MTCY27.03, Rv2377c
UniProt
Find proteins for P9WIP5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WIP5  Go to UniProtKB:  P9WIP5

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 
• OLDERADO: 2KHR Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-04-10 
• Released Date: 2009-05-05 
Deposition Author(s): Buchko, G.W., Kim, C.Y., Terwilliger, T.C., Seattle Structural Genomics Center for Infectious Disease (SSGCID)

Revision History  

• Version 1.0: 2009-05-05
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2020-02-26
  Changes: Data collection, Database references, Derived calculations, Other