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Structural insights into binding of polyglutamylated tetrahydrofolate by serine hydroxymethyltransferase 8 from soybean

Journal Article · · Frontiers in Plant Science
 [1];  [2];  [1]
  1. University of Missouri, Columbia, MO (United States)
  2. University of Georgia, Athens, GA (United States)
Tetrahydrofolate and its derivatives participate in one-carbon transfer reactions in all organisms. The cellular form of tetrahydrofolate (THF) is modified by multiple glutamate residues and polyglutamylation plays a key role in organellar and cellular folate homeostasis. In addition, polyglutamylation of THF is known to increase the binding affinity to enzymes in the folate cycle, many of which can utilize polyglutamylated THF as a substrate. Here, we use X-ray crystallography to provide a high-resolution view of interactions between the enzyme serine hydroxymethyltransferase (SHMT), which provides one carbon precursors for the folate cycle, and a polyglutamylated form of THF. Our 1.7 Å crystal structure of soybean SHMT8 in complex with diglutamylated 5-formyl-THF reveals, for the first time, a structural rearrangement of a loop at the entrance to the folate binding site accompanied by the formation of novel specific interactions between the enzyme and the diglutamyl tail of the ligand. Biochemical assays show that additional glutamate moieties on the folate ligand increase both enzyme stability and binding affinity. Together these studies provide new information on SHMT structure and function and inform the design of anti-folate agents.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Sponsoring Organization:
National Institutes of Health (NIH); National Science Foundation (NSF); USDA; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2471063
Journal Information:
Frontiers in Plant Science, Journal Name: Frontiers in Plant Science Vol. 15; ISSN 1664-462X
Publisher:
Frontiers Research FoundationCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Potent Inhibitors of Plasmodial Serine Hydroxymethyltransferase (SHMT) Featuring a Spirocyclic Scaffold journal April 2018
Looking for protein stabilizing drugs with thermal shift assay: Thermal shift assay for pharmacological chaperones journal April 2015
Improvements to the APBS biomolecular solvation software suite: Improvements to the APBS Software Suite journal October 2017
UCSF ChimeraX: Tools for structure building and analysis journal October 2023
Crystal structure at 2.4 Å resolution of E. coli serine hydroxymethyltransferase in complex with glycine substrate and 5-formyl tetrahydrofolate 1 1Edited by I. A. Wilson journal February 2000
C-h⋯π-interactions in proteins journal March 2001
Enzymatic synthesis and function of folylpolyglutamates journal January 1981
Interaction of folylpolyglutamates with enzymes in one-carbon metabolism journal March 1989
Graphical determination of the dissociation constants for two-substrate enzyme systems journal January 1957
Folate polyglutamylation eliminates dependence of activity on enzyme concentration in mitochondrial serine hydroxymethyltransferases from Arabidopsis thaliana journal August 2013
Mangiferin is a new potential antimalarial and anticancer drug for targeting serine hydroxymethyltransferase journal September 2023
Mechanisms of folate metabolism-related substances affecting Staphylococcus aureus infection journal March 2023
The complexity of folate polyglutamylation in plants: Postharvest ripening and ethylene modulate polyglutamylated profiles in climacteric fruits plus systematic analysis of the glutamyl tail-editing enzymes journal November 2020
Validation of Structures in the Protein Data Bank journal December 2017
Structural Characterization of 5-Substituted Pyrrolo[3,2-d]pyrimidine Antifolate Inhibitors in Complex with Human Serine Hydroxymethyl Transferase 2 journal February 2024
Antimalarial Inhibitors Targeting Serine Hydroxymethyltransferase (SHMT) with in Vivo Efficacy and Analysis of their Binding Mode Based on X-ray Cocrystal Structures journal June 2017
A Review of Small-Molecule Inhibitors of One-Carbon Enzymes: SHMT2 and MTHFD2 in the Spotlight journal March 2021
Interaction of tetrahydropteroylpolyglutamates with two enzymes from mitochondria journal January 1989
In vitro conversion of formate to serine: effect of tetrahydropteroylpolyglutamates and serine hydroxymethyltransferase on the rate of 10-formyltetrahydrofolate synthetase journal November 1989
Interactions of pig liver serine hydroxymethyltransferase with methyl tetrahydropteroylpolyglutamate inhibitors and with tetrahydropteroylpolyglutamate substrates journal March 1982
Serine Transhydroxymethylase. Affinity of Tetrahydrofolate Compounds for the Enzyme and Enzyme-Glycine Complex * journal January 1967
Thermodynamic Analysis of the Binding of the Polyglutamate Chain of 5-Formyltetrahydropteroylpolyglutamates to Serine Hydroxymethyltransferase journal September 1998
Inhibitors of Plasmodial Serine Hydroxymethyltransferase (SHMT): Cocrystal Structures of Pyrazolopyrans with Potent Blood- and Liver-Stage Activities journal March 2015
A soybean cyst nematode resistance gene points to a new mechanism of plant resistance to pathogens journal October 2012
The soybean GmSNAP18 gene underlies two types of resistance to soybean cyst nematode journal March 2017
Folate metabolism: a re-emerging therapeutic target in haematological cancers journal March 2021
Structural basis of methotrexate and pemetrexed action on serine hydroxymethyltransferases revealed using plant models journal December 2019
Serine hydroxymethyltransferase as a potential target of antibacterial agents acting synergistically with one-carbon metabolism-related inhibitors journal June 2022
Interaction between glycine decarboxylase, serine hydroxymethyltransferase and tetrahydrofolate polyglutamates in pea leaf mitochondria journal August 1994
The Affinity of Pyridoxal 5′-Phosphate for Folding Intermediates of Escherichia coli Serine Hydroxymethyltransferase journal August 1995
Polyglutamylation of Folate Coenzymes Is Necessary for Methionine Biosynthesis and Maintenance of Intact Mitochondrial Genome in Saccharomyces cerevisiae journal May 2000
Location of the Pteroylpolyglutamate-binding Site on Rabbit Cytosolic Serine Hydroxymethyltransferase journal November 2002
Plant γ-Glutamyl Hydrolases and Folate Polyglutamates: CHARACTERIZATION, COMPARTMENTATION, AND CO-OCCURRENCE IN VACUOLES journal June 2005
Impaired folate binding of serine hydroxymethyltransferase 8 from soybean underlies resistance to the soybean cyst nematode journal March 2020
Folate Polyglutamylation Is Involved in Chromatin Silencing by Maintaining Global DNA Methylation and Histone H3K9 Dimethylation in Arabidopsis journal July 2013
Coot model-building tools for molecular graphics journal November 2004
MolProbity : all-atom structure validation for macromolecular crystallography journal December 2009
XDS journal January 2010
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Overview of the CCP 4 suite and current developments journal March 2011
Towards automated crystallographic structure refinement with phenix.refine journal March 2012
How good are my data and what is the resolution? journal June 2013
Polder maps: improving OMIT maps by excluding bulk solvent journal February 2017
Structural and functional analysis of two SHMT8 variants associated with soybean cyst nematode resistance journal October 2023
Folate Biosynthesis, Reduction, and Polyglutamylation and the Interconversion of Folate Derivatives journal December 2007
SHMT as a Potential Therapeutic Target for Renal Cell Carcinoma journal September 2023
Chloroplastic Serine Hydroxymethyltransferase From Medicago truncatula: A Structural Characterization journal May 2018
Functional Identification of Serine Hydroxymethyltransferase as a Key Gene Involved in Lysostaphin Resistance and Virulence Potential of Staphylococcus aureus Strains journal November 2020

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