5V7I

Crystal structure of homo sapiens serine hydroxymethyltransferase 2 (mitochondrial) (SHMT2), in complex with glycine, PLP and folate-competitive pyrazolopyran inhibitor: 6-amino-4-isopropyl-3-methyl-4-(3-(pyrrolidin-1-yl)-5-(trifluoromethyl)phenyl)-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.47 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Human SHMT inhibitors reveal defective glycine import as a targetable metabolic vulnerability of diffuse large B-cell lymphoma.

Ducker, G.S.Ghergurovich, J.M.Mainolfi, N.Suri, V.Jeong, S.K.Hsin-Jung Li, S.Friedman, A.Manfredi, M.G.Gitai, Z.Kim, H.Rabinowitz, J.D.

(2017) Proc Natl Acad Sci U S A 114: 11404-11409

  • DOI: https://doi.org/10.1073/pnas.1706617114
  • Primary Citation of Related Structures:  
    5V7I

  • PubMed Abstract: 

    The enzyme serine hydroxymethyltransferse (SHMT) converts serine into glycine and a tetrahydrofolate-bound one-carbon unit. Folate one-carbon units support purine and thymidine synthesis, and thus cell growth. Mammals have both cytosolic SHMT1 and mitochondrial SHMT2, with the mitochondrial isozyme strongly up-regulated in cancer. Here we show genetically that dual SHMT1/2 knockout blocks HCT-116 colon cancer tumor xenograft formation. Building from a pyrazolopyran scaffold that inhibits plant SHMT, we identify small-molecule dual inhibitors of human SHMT1/2 (biochemical IC 50 ∼ 10 nM). Metabolomics and isotope tracer studies demonstrate effective cellular target engagement. A cancer cell-line screen revealed that B-cell lines are particularly sensitive to SHMT inhibition. The one-carbon donor formate generally rescues cells from SHMT inhibition, but paradoxically increases the inhibitor's cytotoxicity in diffuse large B-cell lymphoma (DLBCL). We show that this effect is rooted in defective glycine uptake in DLBCL cell lines, rendering them uniquely dependent upon SHMT enzymatic activity to meet glycine demand. Thus, defective glycine import is a targetable metabolic deficiency of DLBCL.


  • Organizational Affiliation

    Department of Chemistry, Princeton University, Princeton NJ 08544.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine hydroxymethyltransferase, mitochondrial
A, B
476Homo sapiensMutation(s): 0 
Gene Names: SHMT2
EC: 2.1.2.1
UniProt & NIH Common Fund Data Resources
Find proteins for P34897 (Homo sapiens)
Explore P34897 
Go to UniProtKB:  P34897
PHAROS:  P34897
GTEx:  ENSG00000182199 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP34897
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
8Z1
Query on 8Z1

Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]
(4R)-6-amino-3-methyl-4-(propan-2-yl)-4-[3-(pyrrolidin-1-yl)-5-(trifluoromethyl)phenyl]-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile
C22 H24 F3 N5 O
NOKJZHRLDAOFCV-NRFANRHFSA-N
PEG
Query on PEG

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A]
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
D [auth A],
H [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
GLY
Query on GLY

Download Ideal Coordinates CCD File 
I [auth B]GLYCINE
C2 H5 N O2
DHMQDGOQFOQNFH-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
LLP
Query on LLP
A, B
L-PEPTIDE LINKINGC14 H22 N3 O7 PLYS
Binding Affinity Annotations 
IDSourceBinding Affinity
8Z1 BindingDB:  5V7I IC50: min: 13, max: 66 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.47 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 160.14α = 90
b = 160.14β = 90
c = 210.1γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata processing
PHASERphasing
Cootmodel building

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United States--
American Cancer SocietyUnited StatesPF-15-190- 01- TBE

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-11
    Type: Initial release
  • Version 1.1: 2017-11-08
    Changes: Database references
  • Version 1.2: 2019-11-27
    Changes: Author supporting evidence
  • Version 1.3: 2023-10-04
    Changes: Data collection, Database references, Refinement description
  • Version 1.4: 2023-11-15
    Changes: Data collection