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Structure Determination of Mycobacterium tuberculosis Serine Protease Hip1 (Rv2224c)

Journal Article · · Biochemistry
 [1];  [1];  [1];  [2];  [1];  [3];  [1];  [4];  [5];  [6];  [1]
  1. Brandeis Univ., Waltham, MA (United States)
  2. California Health Sciences Univ., Clovis, CA (United States)
  3. Loyola Univ. Chicago, Chicago, IL (United States)
  4. Univ. of Florida, Gainesville, FL (United States)
  5. Emory Univ., Atlanta, GA (United States)
  6. Cornell Univ., Ithaca, NY (United States). Weill Medical College
The Mycobacterium tuberculosis (Mtb) serine protease Hip1 (hydrolase important for pathogenesis; Rv2224c) promotes tuberculosis (TB) pathogenesis by impairing host immune responses through proteolysis of a protein substrate, Mtb GroEL2. The cell surface localization of Hip1 and its immunomodulatory functions make Hip1 a good drug target for new adjunctive immune therapies for TB. Here, we report the crystal structure of Hip1 to a resolution of 2.6 Å and the kinetic studies of the enzyme against model substrates and the protein GroEL2. The structure shows a two-domain protein, one of which contains the catalytic residues that are the signature of a serine protease. Surprisingly, a threonine is located within the active site close enough to hydrogen bond with the catalytic residues Asp463 and His490. Mutation of this residue, Thr466, to alanine established its importance for function. Our studies provide insights into the structure of a member of a novel family of proteases. Knowledge of the Hip1 structure will aid in designing inhibitors that could block Hip1 activity.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Institutes of Health (NIH)
OSTI ID:
1368260
Alternate ID(s):
OSTI ID: 1409616
Journal Information:
Biochemistry, Journal Name: Biochemistry Journal Issue: 17 Vol. 56; ISSN 0006-2960
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (35)

Structure validation by Cα geometry: ϕ,ψ and Cβ deviation journal January 2003
On the size of the active site in proteases. I. Papain journal April 1967
PDBsum: a web-based database of summaries and analyses of all PDB structures journal December 1997
Thermofluor-based high-throughput stability optimization of proteins for structural studies journal October 2006
Lipoproteins of Mycobacterium tuberculosis : an abundant and functionally diverse class of cell envelope components journal November 2004
The Geometry of Interactions between Catalytic Residues and their Substrates journal June 2007
Structural Insight into Serine Protease Rv3671c that Protects M. tuberculosis from Oxidative and Acidic Stress journal October 2010
TubercuList – 10 years after journal January 2011
Removal of the Side Chain at the Active-Site Serine by a Glycine Substitution Increases the Stability of a Wide Range of Serine β-Lactamases by Relieving Steric Strain journal April 2016
Design of Selective Substrates and Activity-Based Probes for Hydrolase Important for Pathogenesis 1 (HIP1) from Mycobacterium tuberculosis journal July 2016
Induced Fit Activation Mechanism of the Exceptionally Specific Serine Protease, Complement Factor D journal February 1999
Mycobacterium tuberculosis: here today, and here tomorrow journal August 2001
From The Cover: Genome-wide requirements for Mycobacterium tuberculosis adaptation and survival in macrophages journal May 2005
Structural basis for conformational plasticity of the Parkinson's disease-associated ubiquitin hydrolase UCH-L1 journal March 2006
Mycobacterium tuberculosis Rv2224c modulates innate immune responses journal January 2008
Crystal structure of Mycobacterium tuberculosis ClpP1P2 suggests a model for peptidase activation by AAA+ partner binding and substrate delivery journal September 2014
Structure of the Mycosin-1 Protease from the Mycobacterial ESX-1 Protein Type VII Secretion System journal June 2013
X-ray Snapshots of Peptide Processing in Mutants of Tricorn-interacting Factor F1 from Thermoplasma acidophilum journal September 2005
Characterization of a Novel Cell Wall-anchored Protein with Carboxylesterase Activity Required for Virulence in Mycobacterium tuberculosis journal June 2007
Structure of proline iminopeptidase from Xanthomonas campestris pv. citri: a prototype for the prolyl oligopeptidase family journal January 1998
Structures of the tricorn-interacting aminopeptidase F1 with different ligands explain its catalytic mechanism journal October 2002
Dali server: conservation mapping in 3D journal May 2010
PDBsum additions journal October 2013
MEROPS : the database of proteolytic enzymes, their substrates and inhibitors journal October 2013
Crystal Structure of Prolyl Aminopeptidase from Serratia marcescens journal September 1999
Prolyl Aminopeptidase Is Not a Sulfhydryl Enzyme: Identification of the Active Serine Residue by Site-Directed Mutagenesis1 journal November 1994
The α / β hydrolase fold journal January 1992
PHENIX : building new software for automated crystallographic structure determination journal October 2002
Coot model-building tools for molecular graphics journal November 2004
Mycobacterial survival strategies in the phagosome: defence against host stresses journal August 2009
Mycobacterium tuberculosis Hip1 Dampens Macrophage Proinflammatory Responses by Limiting Toll-Like Receptor 2 Activation journal September 2011
Three-Dimensional Molecular Modeling of a Diverse Range of SC Clan Serine Proteases journal November 2012
Mycobacterium tuberculosis Hip1 Modulates Macrophage Responses through Proteolysis of GroEL2 journal May 2014
Alpha Beta-Hydrolase Fold Enzymes Structures, Functions and Mechanisms journal September 2000
Mycobacterium tuberculosis Impairs Dendritic Cell Functions through the Serine Hydrolase Hip1 journal March 2014

Cited By (3)

The acid-base-nucleophile catalytic triad in ABH-fold enzymes is coordinated by a set of structural elements journal February 2020
Rv1288, a Two Domain, Cell Wall Anchored, Nutrient Stress Inducible Carboxyl-Esterase of Mycobacterium tuberculosis, Modulates Cell Wall Lipid journal December 2018
Carboxylic Ester Hydrolases in Bacteria: Active Site, Structure, Function and Application journal November 2019

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