skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: An O-Methyltransferase Is Required for Infection of Tick Cells by Anaplasma phagocytophilum

Journal Article · · PLoS Pathogens
 [1];  [2];  [1];  [1];  [1];  [3];  [1];  [1];  [3];  [1];  [2];  [1];  [4]
  1. Univ. of Minnesota, Saint Paul, MN (United States)
  2. Emerald Bio, Bainbridge Island, WA (United States); Seattle Structural Genomics Center for Infectious Disease, Seattle, WA (United States)
  3. Univ. of Minnesota, Minneapolis, MN (United States)
  4. Vanderbilt Univ., Nashville, TN (United States)

Anaplasma phagocytophilum, the causative agent of Human Granulocytic Anaplasmosis (HGA), is an obligately intracellular α-proteobacterium that is transmitted by Ixodes spp ticks. However, the pathogen is not transovarially transmitted between tick generations and therefore needs to survive in both a mammalian host and the arthropod vector to complete its life cycle. To adapt to different environments, pathogens rely on differential gene expression as well as the modification of proteins and other molecules. Random transposon mutagenesis of A. phagocytophilum resulted in an insertion within the coding region of an o-methyltransferase (omt) family 3 gene. In wild-type bacteria, expression of omt was up-regulated during binding to tick cells (ISE6) at 2 hr post-inoculation, but nearly absent by 4 hr p.i. Gene disruption reduced bacterial binding to ISE6 cells, and the mutant bacteria that were able to enter the cells were arrested in their replication and development. Analyses of the proteomes of wild-type versus mutant bacteria during binding to ISE6 cells identified Major Surface Protein 4 (Msp4), but also hypothetical protein APH_0406, as the most differentially methylated. Importantly, two glutamic acid residues (the targets of the OMT) were methyl-modified in wild-type Msp4, whereas a single asparagine (not a target of the OMT) was methylated in APH_0406. In vitro methylation assays demonstrated that recombinant OMT specifically methylated Msp4. Towards a greater understanding of the overall structure and catalytic activity of the OMT, we solved the apo (PDB_ID:4OA8), the S-adenosine homocystein-bound (PDB_ID:4OA5), the SAH-Mn2+ bound (PDB_ID:4PCA), and SAM- Mn2+ bound (PDB_ID:4PCL) X-ray crystal structures of the enzyme. Here, we characterized a mutation in A. phagocytophilum that affected the ability of the bacteria to productively infect cells from its natural vector. Nevertheless, due to the lack of complementation, we cannot rule out secondary mutations.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Inst. of Allergy and Infectious Diseases (NIAID); National Inst. of Allergy and Infectious Diseases; National Inst. of Health; Dept. of Health and Human Services; National Science Foundation (NSF)
Grant/Contract Number:
R01-AI042792; HHSN272201200025C; 9871237; NSF-DBI-0215759
OSTI ID:
1237745
Journal Information:
PLoS Pathogens, Vol. 11, Issue 11; ISSN 1553-7374
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

References (86)

“Candidatus Midichloriaceae” fam. nov. (Rickettsiales), an Ecologically Widespread Clade of Intracellular Alphaproteobacteria journal March 2013
Motility Characteristics Are Altered for Rickettsia bellii Transformed To Overexpress a Heterologous rickA Gene journal December 2013
Rickettsial outer-membrane protein B (rOmpB) mediates bacterial invasion through Ku70 in an actin, c-Cbl, clathrin and caveolin 2-dependent manner journal April 2009
Adapt locally and act globally: strategy to maintain high chemoreceptor sensitivity in complex environments journal January 2011
Intra-leukocyte expression of two-component systems in Ehrlichia chaffeensis and Anaplasma phagocytophilum and effects of the histidine kinase inhibitor closantel journal August 2006
Sequence analysis of the msp4 gene of Anaplasma phagocytophilum strains text January 2005
The Legionella pneumophila iraAB Locus Is Required for Iron Assimilation, Intracellular Infection, and Virulence journal March 2000
PHENIX: a comprehensive Python-based system for macromolecular structure solution. text January 2010
Essential Role for the gtfA Gene Encoding a Putative Glycosyltransferase in the Adherence of Porphyromonas gingivalis journal April 2004
The immunoprotective Anaplasma marginale major surface protein 2 is encoded by a polymorphic multigene family. journal January 1994
Human Granulocytic Anaplasmosis journal June 2015
Comparative Genomics of Emerging Human Ehrlichiosis Agents journal January 2006
A naplasma phagocytophilum surface protein AipA mediates invasion of mammalian host cells: A. phagocytophilum invasin AipA journal April 2014
Protein methylation is required to maintain optimal HIV-1 infectivity journal December 2006
Epidemiology and Control of Human Granulocytic Anaplasmosis: A Systematic Review journal April 2012
Microbe-Host Interactions: Structure and Role of Gram-Negative Bacterial Porins journal December 2012
Invasion and Intracellular Development of the Human Granulocytic Ehrlichiosis Agent in Tick Cell Culture journal January 1999
Sequence Analysis of the msp4 Gene of Anaplasma phagocytophilum Strains journal March 2005
Proteomic Analysis of Anaplasma phagocytophilum during Infection of Human Myeloid Cells Identifies a Protein That Is Pronouncedly Upregulated on the Infectious Dense-Cored Cell journal August 2011
Essential Domains of Anaplasma phagocytophilum Invasins Utilized to Infect Mammalian Host Cells journal February 2015
Characterization of rickettsial adhesin Adr2 belonging to a new group of adhesins in α-proteobacteria journal May 2011
Anaplasma phagocytophilum Dihydrolipoamide Dehydrogenase 1 Affects Host-Derived Immunopathology during Microbial Colonization journal July 2012
Transovarial Transmission of Francisella -Like Endosymbionts and Anaplasma phagocytophilum Variants in Dermacentor albipictus (Acari: Ixodidae) journal May 2009
Expression and immune recognition of the conserved MSP4 outer membrane protein of Anaplasma marginale. journal January 1993
Human granulocytic anaplasmosis journal December 2012
Methylation and in vivo expression of the surface-exposed Leptospira interrogans outer-membrane protein OmpL32 journal March 2012
Whole genome transcription profiling of Anaplasma phagocytophilum in human and tick host cells by tiling array analysis journal January 2008
Direct Cultivation of the Causative Agent of Human Granulocytic Ehrlichiosis journal January 1996
Anaplasma phagocytophilum : deceptively simple or simply deceptive? journal June 2012
The Saccharomyces cerevisiae poly(A)-binding protein is subject to multiple post-translational modifications, including the methylation of glutamic acid journal January 2014
Molecular Basis of Bacterial Outer Membrane Permeability Revisited journal December 2003
Lifeact: a versatile marker to visualize F-actin journal June 2008
Molecular characterization reveals distinct genospecies of Anaplasma phagocytophilum from diverse North American hosts journal September 2011
Insight into the virulence of Rickettsia prowazekii by proteomic analysis and comparison with an avirulent strain journal March 2007
SAD phasing using iodide ions in a high-throughput structural genomics environment journal February 2011
Genomic, proteomic, and transcriptomic analysis of virulent and avirulent Rickettsia prowazekii reveals its adaptive mutation capabilities journal April 2010
Rickettsial Entry into Host Cells: Finding the Keys To Unlock the Doors journal November 2012
High-pH reversed-phase chromatography with fraction concatenation for 2D proteomic analysis journal April 2012
Posttranslational Modification of Pili upon Cell Contact Triggers N. meningitidis Dissemination journal February 2011
Targeted Knockout of the Rickettsia rickettsii OmpA Surface Antigen Does Not Diminish Virulence in a Mammalian Model System journal March 2015
Host-Pathogen O-Methyltransferase Similarity and Its Specific Presence in Highly Virulent Strains of Francisella tularensis Suggests Molecular Mimicry journal May 2011
An Ixodes scapularis protein required for survival of Anaplasma phagocytophilum in tick salivary glands journal May 2006
Intermolecular relationships of major surface proteins of Anaplasma marginale. journal January 1994
Transformation of Anaplasma marginale journal February 2010
Molecular events involved in cellular invasion by Ehrlichia chaffeensis and Anaplasma phagocytophilum journal February 2010
Human Granulocytic Anaplasmosis journal September 2008
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Adherence of Helicobacter pylori to Abiotic Surfaces Is Influenced by Serum journal December 2007
Receptor Methylation Controls the Magnitude of Stimulus-Response Coupling in Bacterial Chemotaxis journal July 2002
Architectures, mechanisms and molecular evolution of natural product methyltransferases journal January 2012
Ultrastructural and Antigenic Characterization of a Granulocytic Ehrlichiosis Agent Directly Isolated and Stably Cultivated from a Patient in New York State journal January 1997
Automated macromolecular model building for X-ray crystallography using ARP/wARP version 7 journal June 2008
Protein structure prediction on the Web: a case study using the Phyre server journal February 2009
Knockout of an outer membrane protein operon of Anaplasma marginale by transposon mutagenesis journal January 2014
Predatory Lifestyle of Bdellovibrio bacteriovorus journal October 2009
Ehrlichia chaffeensis Uses Its Surface Protein EtpE to Bind GPI-Anchored Protein DNase X and Trigger Entry into Mammalian Cells journal October 2013
Re-evaluation of the Role of Calcium Homeostasis Endoplasmic Reticulum Protein (CHERP) in Cellular Calcium Signaling journal November 2012
Mycobacterium avium 104 deleted of the methyltransferase D gene by allelic replacement lacks serotype-specific glycopeptidolipids and shows attenuated virulence in mice: GPLs and M. avium pathogenesis journal March 2005
Anaplasma phagocytophilum Asp14 Is an Invasin That Interacts with Mammalian Host Cells via Its C Terminus To Facilitate Infection journal October 2012
The Cercospora nicotianae gene encoding dual O-methyltransferase and FAD-dependent monooxygenase domains mediates cercosporin toxin biosynthesis journal May 2007
Identification of Novel Surface Proteins of Anaplasma phagocytophilum by Affinity Purification and Proteomics journal August 2007
Substructure search procedures for macromolecular structures journal October 2003
Postgenomic Analyses Reveal Development of Infectious Anaplasma phagocytophilum during Transmission from Ticks to Mice journal March 2012
Anaplasma phagocytophilumandAnaplasma marginaleElicit Different Gene Expression Responses in Cultured Tick Cells journal January 2009
The Crystal Structure of the Novobiocin Biosynthetic Enzyme NovP: The First Representative Structure for the TylF O-Methyltransferase Superfamily journal January 2010
The peptide chain release factor methyltransferase PrmC is essential for pathogenicity and environmental adaptation of Pseudomonas aeruginosa PA14: Global regulatory role of PrmC in P. aeruginosa PA14 journal December 2012
Fucosylation enhances colonization of ticks by Anaplasma phagocytophilum: Microbial colonization of ticks journal August 2010
Integration, scaling, space-group assignment and post-refinement journal January 2010
Clinical Diagnosis and Treatment of Human Granulocytotropic Anaplasmosis journal October 2006
The biological basis of severe outcomes in Anaplasma phagocytophilum infection journal February 2012
The First Bite— Profiling the Predatosome in the Bacterial Pathogen Bdellovibrio journal January 2010
PARP1 exhibits enhanced association and catalytic efficiency with γH2A.X-nucleosome journal December 2019
Cavin1 intrinsically disordered domains are essential for fuzzy electrostatic interactions and caveola formation journal February 2021
Two Protein Lysine Methyltransferases Methylate Outer Membrane Protein B from Rickettsia journal December 2012
Targeted and Random Mutagenesis of Ehrlichia chaffeensis for the Identification of Genes Required for In vivo Infection journal February 2013
Maximum-likelihood density modification journal August 2000
Features and development of Coot journal March 2010
The Type IV Leader Peptidase/ N -Methyltransferase ofVibrio vulnificus Controls Factors Required for Adherence to HEp-2 Cells and Virulence in Iron-Overloaded Mice journal December 1998
REFMAC 5 for the refinement of macromolecular crystal structures journal March 2011
Multimethylation of Rickettsia OmpB Catalyzed by Lysine Methyltransferases journal March 2014
Anaplasma phagocytophilum Outer Membrane Protein A Interacts with Sialylated Glycoproteins To Promote Infection of Mammalian Host Cells journal August 2012
Anaplasma phagocytophilum Dense-Cored Organisms Mediate Cellular Adherence through Recognition of Human P-Selectin Glycoprotein Ligand 1 journal July 2009
Reduced Infectivity in Cattle for an Outer Membrane Protein Mutant of Anaplasma marginale journal January 2015
Transformation of Anaplasma phagocytophilum journal October 2006
Phaser crystallographic software journal July 2007
Kinetics of receptor modification. The multiply methylated aspartate receptors involved in bacterial chemotaxis. journal August 1986

Cited By (8)

Loss of peroxiredoxin-2 exacerbates eccentric contraction-induced force loss in dystrophin-deficient muscle journal November 2018
Human rickettsial pathogen modulates arthropod organic anion transporting polypeptide and tryptophan pathway for its survival in ticks journal October 2017
Global Transcription Profiles of Anaplasma phagocytophilum at Key Stages of Infection in Tick and Human Cell Lines and Granulocytes journal March 2020
Peptide Nucleic Acid Knockdown and Intra-host Cell Complementation of Ehrlichia Type IV Secretion System Effector journal June 2017
Structural and biochemical characterization of Rv0187, an O-methyltransferase from Mycobacterium tuberculosis journal May 2019
Discovery of in vivo Virulence Genes of Obligatory Intracellular Bacteria by Random Mutagenesis journal February 2020
Anaplasma phagocytophilum MSP4 and HSP70 Proteins Are Involved in Interactions with Host Cells during Pathogen Infection journal July 2017
Microbial Invasion vs. Tick Immune Regulation journal September 2017