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- PDB-8ghr: Structure of human ENPP1 in complex with variable heavy domain VH27.2 -
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Open data
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Basic information
Entry | Database: PDB / ID: 8ghr | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Title | Structure of human ENPP1 in complex with variable heavy domain VH27.2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | IMMUNE SYSTEM / phosphodiesterase / inhibitor | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Function / homology | ![]() cyclic-GMP-AMP hydrolase activity / negative regulation of hh target transcription factor activity / inorganic diphosphate transport / Vitamin B2 (riboflavin) metabolism / GTP diphosphatase activity / UTP diphosphatase activity / 3'-phosphoadenosine 5'-phosphosulfate binding / dinucleotide phosphatase activity / phosphodiesterase I / nucleoside triphosphate catabolic process ...cyclic-GMP-AMP hydrolase activity / negative regulation of hh target transcription factor activity / inorganic diphosphate transport / Vitamin B2 (riboflavin) metabolism / GTP diphosphatase activity / UTP diphosphatase activity / 3'-phosphoadenosine 5'-phosphosulfate binding / dinucleotide phosphatase activity / phosphodiesterase I / nucleoside triphosphate catabolic process / 8-oxo-(d)RTP hydrolase activity / nucleotide diphosphatase / 3'-phosphoadenosine 5'-phosphosulfate metabolic process / nucleic acid metabolic process / Vitamin B5 (pantothenate) metabolism / nucleoside triphosphate diphosphatase activity / ATP diphosphatase activity / negative regulation of glycogen biosynthetic process / negative regulation of bone mineralization / phosphate ion homeostasis / melanocyte differentiation / intracellular phosphate ion homeostasis / regulation of bone mineralization / negative regulation of D-glucose import / phosphate-containing compound metabolic process / phosphodiesterase I activity / exonuclease activity / scavenger receptor activity / immunoglobulin complex / response to ATP / negative regulation of fat cell differentiation / bone mineralization / phosphatase activity / polysaccharide binding / 3',5'-cyclic-AMP phosphodiesterase activity / ATP metabolic process / negative regulation of insulin receptor signaling pathway / generation of precursor metabolites and energy / insulin receptor binding / negative regulation of cell growth / cellular response to insulin stimulus / basolateral plasma membrane / gene expression / adaptive immune response / nucleic acid binding / immune response / lysosomal membrane / calcium ion binding / cell surface / protein homodimerization activity / extracellular space / extracellular region / zinc ion binding / ATP binding / membrane / plasma membrane Similarity search - Function | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Biological species | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Carozza, J.A. / Wang, H. / Solomon, P.E. / Wells, J.A. / Li, L. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Discovery of VH domains that allosterically inhibit ENPP1. Authors: Paige E Solomon / Colton J Bracken / Jacqueline A Carozza / Haoqing Wang / Elizabeth P Young / Alon Wellner / Chang C Liu / E Alejandro Sweet-Cordero / Lingyin Li / James A Wells / ![]() Abstract: Ectodomain phosphatase/phosphodiesterase-1 (ENPP1) is overexpressed on cancer cells and functions as an innate immune checkpoint by hydrolyzing extracellular cyclic guanosine monophosphate adenosine ...Ectodomain phosphatase/phosphodiesterase-1 (ENPP1) is overexpressed on cancer cells and functions as an innate immune checkpoint by hydrolyzing extracellular cyclic guanosine monophosphate adenosine monophosphate (cGAMP). Biologic inhibitors have not yet been reported and could have substantial therapeutic advantages over current small molecules because they can be recombinantly engineered into multifunctional formats and immunotherapies. Here we used phage and yeast display coupled with in cellulo evolution to generate variable heavy (VH) single-domain antibodies against ENPP1 and discovered a VH domain that allosterically inhibited the hydrolysis of cGAMP and adenosine triphosphate (ATP). We solved a 3.2 Å-resolution cryo-electron microscopy structure for the VH inhibitor complexed with ENPP1 that confirmed its new allosteric binding pose. Finally, we engineered the VH domain into multispecific formats and immunotherapies, including a bispecific fusion with an anti-PD-L1 checkpoint inhibitor that showed potent cellular activity. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 333 KB | Display | ![]() |
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PDB format | ![]() | 256.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 40047MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Antibody , 2 types, 4 molecules ABCD
#1: Antibody | Mass: 115488.617 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #2: Antibody | Mass: 13564.035 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Sugars , 2 types, 8 molecules 
#3: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #6: Sugar | ChemComp-NAG / |
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-Non-polymers , 4 types, 14 molecules 






#4: Chemical | ChemComp-ZN / #5: Chemical | #7: Chemical | #8: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | Y |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: ENPP1-VH27 complex / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT |
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Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.4 / Details: phosphate buffered saline |
Specimen | Conc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 700 nm |
Image recording | Electron dose: 57 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | ||||||||||||||||||||||||
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EM software | Name: PHENIX / Category: model refinement | ||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 77023 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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