Biological Assembly 1  

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

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 32.33 kDa 
• Atom Count: 2619 
• Modelled Residue Count: 298 
• Deposited Residue Count: 302 
• Unique protein chains: 1

2C2I

Structure and function of Rv0130, a conserved hypothetical protein from M.tuberculosis

• PDB DOI: 10.2210/pdb2C2I/pdb

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


• Deposited: 2005-09-29 Released: 2006-09-14 
• Deposition Author(s): Johansson, P., Castell, A., Jones, T.A., Backbro, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.226 
• R-Value Work: 0.183 
• R-Value Observed: 0.185 

Literature

Structure and Function of Rv0130, a Conserved Hypothetical Protein from Mycobacterium Tuberculosis.

Johansson, P., Castell, A., Jones, T.A., Backbro, K.

(2006) Protein Sci 15: 2300

• PubMed: 16963641 
• DOI: 10.1110/ps.062309306
• Primary Citation of Related Structures:  
  2C2I


• PubMed Abstract: 
  

A large fraction of the Mycobacterium tuberculosis genome codes for proteins of unknown function. We here report the structure of one of these proteins, Rv0130, solved to a resolution of 1.8 å. The Rv0130 monomer features a single hotdog fold composed of a highly curved beta-sheet on top of a long and a short alpha-helix. Two monomers in turn pack to form a double-hotdog-folded homodimer, similar to a large group of enzymes that use thiol esters as substrates. Rv0130 was found to contain a highly conserved R-specific hydratase motif buried deeply between the two monomers. Our biochemical studies show that the protein is able to hydrate a short trans-2-enoyl-coenzyme A moiety with a k(cat) of 1.1 x 10(2) sec(-1). The importance of the side chains of D40 and H45 for hydratase activity is demonstrated by site-directed mutagenesis. In contrast to many hotdog-folded proteins, a proline residue distorts the central helix of Rv0130. This distortion allows the creation of a long, curved tunnel, similar to the substrate-binding channels of long-chain eukaryotic hydratase 2 enzymes.

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Organizational Affiliation: 

Department of Cell and Molecular Biology, Uppsala University, Biomedical Center, SE-751 24 Uppsala, Sweden.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RV0130	A, B	151	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: htdZ, Rv0130 EC: 4.2.1.17 (PDB Primary Data), 4.2.1 (UniProt), 4.2.1.55 (UniProt)
UniProt
Find proteins for P9WNP3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WNP3  Go to UniProtKB:  P9WNP3

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.226 
• R-Value Work: 0.183 
• R-Value Observed: 0.185 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.697	α = 90
b = 108.708	β = 90
c = 50.376	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-09-29 
• Released Date: 2006-09-14 
Deposition Author(s): Johansson, P., Castell, A., Jones, T.A., Backbro, K.

Revision History  

• Version 1.0: 2006-09-14
  Type: Initial release
  
• Version 1.1: 2011-05-07
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance