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- EMDB-43931: CryoEM structure of activated CRAF/MEK/14-3-3 complex with NST-628 -
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Open data
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Basic information
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Title | CryoEM structure of activated CRAF/MEK/14-3-3 complex with NST-628 | |||||||||
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![]() | Inhibitor / complex / SIGNALING PROTEIN / TRANSFERASE | |||||||||
Function / homology | ![]() death-inducing signaling complex assembly / epithelial cell proliferation involved in lung morphogenesis / positive regulation of endodermal cell differentiation / intermediate filament cytoskeleton organization / placenta blood vessel development / regulation of axon regeneration / mitogen-activated protein kinase kinase / labyrinthine layer development / MAP-kinase scaffold activity / type B pancreatic cell proliferation ...death-inducing signaling complex assembly / epithelial cell proliferation involved in lung morphogenesis / positive regulation of endodermal cell differentiation / intermediate filament cytoskeleton organization / placenta blood vessel development / regulation of axon regeneration / mitogen-activated protein kinase kinase / labyrinthine layer development / MAP-kinase scaffold activity / type B pancreatic cell proliferation / cerebellar cortex formation / regulation of Rho protein signal transduction / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / Signaling by MAP2K mutants / Rap1 signalling / regulation of cell motility / insulin secretion involved in cellular response to glucose stimulus / regulation of Golgi inheritance / trachea formation / Negative feedback regulation of MAPK pathway / regulation of early endosome to late endosome transport / positive regulation of axonogenesis / regulation of stress-activated MAPK cascade / IFNG signaling activates MAPKs / Frs2-mediated activation / GP1b-IX-V activation signalling / ERBB2-ERBB3 signaling pathway / regulation of epidermal cell division / protein kinase C inhibitor activity / positive regulation of epidermal cell differentiation / keratinocyte development / protein kinase activator activity / keratinization / endodermal cell differentiation / regulation of cell differentiation / face development / MAPK3 (ERK1) activation / pseudopodium / somatic stem cell population maintenance / Bergmann glial cell differentiation / MAP kinase kinase activity / thyroid gland development / neurotrophin TRK receptor signaling pathway / glutathione transferase / Uptake and function of anthrax toxins / Regulation of localization of FOXO transcription factors / keratinocyte proliferation / glutathione transferase activity / extrinsic apoptotic signaling pathway via death domain receptors / phosphoserine residue binding / MAP kinase kinase kinase activity / Activation of BAD and translocation to mitochondria / negative regulation of keratinocyte proliferation / establishment of skin barrier / negative regulation of protein-containing complex assembly / SARS-CoV-2 targets host intracellular signalling and regulatory pathways / Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex / Schwann cell development / type II interferon-mediated signaling pathway / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / negative regulation of stem cell proliferation / negative regulation of extrinsic apoptotic signaling pathway via death domain receptors / RHO GTPases activate PKNs / keratinocyte differentiation / protein kinase A signaling / protein sequestering activity / activation of adenylate cyclase activity / response to muscle stretch / ERK1 and ERK2 cascade / negative regulation of innate immune response / protein serine/threonine/tyrosine kinase activity / myelination / protein export from nucleus / CD209 (DC-SIGN) signaling / protein serine/threonine kinase activator activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / glutathione metabolic process / insulin-like growth factor receptor signaling pathway / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / positive regulation of protein export from nucleus / release of cytochrome c from mitochondria / thymus development / stem cell proliferation / Signal transduction by L1 / Translocation of SLC2A4 (GLUT4) to the plasma membrane / cell motility / TP53 Regulates Metabolic Genes / RAF activation / negative regulation of protein kinase activity / Signaling by high-kinase activity BRAF mutants / wound healing / MAP2K and MAPK activation / negative regulation of cysteine-type endopeptidase activity involved in apoptotic process / positive regulation of protein serine/threonine kinase activity / neuron differentiation / Stimuli-sensing channels / Negative regulation of MAPK pathway / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.36 Å | |||||||||
![]() | Quade B / Cohen SE / Huang X | |||||||||
Funding support | 1 items
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![]() | ![]() Title: The Pan-RAF-MEK Nondegrading Molecular Glue NST-628 Is a Potent and Brain-Penetrant Inhibitor of the RAS-MAPK Pathway with Activity across Diverse RAS- and RAF-Driven Cancers. Authors: Meagan B Ryan / Bradley Quade / Natasha Schenk / Zhong Fang / Marshall Zingg / Steven E Cohen / Brooke M Swalm / Chun Li / Ayşegül Özen / Chaoyang Ye / Maria Stella Ritorto / Xin Huang / ...Authors: Meagan B Ryan / Bradley Quade / Natasha Schenk / Zhong Fang / Marshall Zingg / Steven E Cohen / Brooke M Swalm / Chun Li / Ayşegül Özen / Chaoyang Ye / Maria Stella Ritorto / Xin Huang / Arvin C Dar / Yongxin Han / Klaus P Hoeflich / Michael Hale / Margit Hagel / ![]() Abstract: Alterations in the RAS-MAPK signaling cascade are common across multiple solid tumor types and are a driver for many cancers. NST-628 is a potent pan-RAF-MEK molecular glue that prevents the ...Alterations in the RAS-MAPK signaling cascade are common across multiple solid tumor types and are a driver for many cancers. NST-628 is a potent pan-RAF-MEK molecular glue that prevents the phosphorylation and activation of MEK by RAF, overcoming the limitations of traditional RAS-MAPK inhibitors and leading to deep durable inhibition of the pathway. Cellular, biochemical, and structural analyses of RAF-MEK complexes show that NST-628 engages all isoforms of RAF and prevents the formation of BRAF-CRAF heterodimers, a differentiated mechanism from all current RAF inhibitors. With a potent and durable inhibition of the RAF-MEK signaling complex as well as high intrinsic permeability into the brain, NST-628 demonstrates broad efficacy in cellular and patient-derived tumor models harboring diverse MAPK pathway alterations, including orthotopic intracranial models. Given its functional and pharmacokinetic mechanisms that are differentiated from previous therapies, NST-628 is positioned to make an impact clinically in areas of unmet patient need. Significance: This study introduces NST-628, a molecular glue having differentiated mechanism and drug-like properties. NST-628 treatment leads to broad efficacy with high tolerability and central nervous system activity across multiple RAS- and RAF-driven tumor models. NST-628 has the potential to provide transformative clinical benefits as both monotherapy and vertical combination anchor. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 2.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17.6 KB 17.6 KB | Display Display | ![]() |
Images | ![]() | 48.2 KB | ||
Filedesc metadata | ![]() | 6.6 KB | ||
Others | ![]() ![]() | 23.4 MB 23.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 594.3 KB | Display | ![]() |
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Full document | ![]() | 593.9 KB | Display | |
Data in XML | ![]() | 10.6 KB | Display | |
Data in CIF | ![]() | 12.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9axaMC ![]() 9axcC ![]() 9axhC ![]() 9axmC ![]() 9axxC ![]() 9axyC ![]() 9ay7C ![]() 9ayaC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.8105 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_43931_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_43931_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : CRAF/MEK/14-3-3 complex with NST-628
Entire | Name: CRAF/MEK/14-3-3 complex with NST-628 |
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Components |
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-Supramolecule #1: CRAF/MEK/14-3-3 complex with NST-628
Supramolecule | Name: CRAF/MEK/14-3-3 complex with NST-628 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: GST26/CRAF chimera
Macromolecule | Name: GST26/CRAF chimera / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: glutathione transferase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 64.798465 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MSPILGYWKI KGLVQPTRLL LEYLEEKYEE HLYERDEGDK WRNKKFELGL EFPNLPYYID GDVKLTQSMA IIRYIADKHN MLGGCPKER AEISMLEGAV LDIRYGVSRI AYSKDFETLK VDFLSKLPEM LKMFEDRLCH KTYLNGDHVT HPDFMLYDAL D VVLYMDPM ...String: MSPILGYWKI KGLVQPTRLL LEYLEEKYEE HLYERDEGDK WRNKKFELGL EFPNLPYYID GDVKLTQSMA IIRYIADKHN MLGGCPKER AEISMLEGAV LDIRYGVSRI AYSKDFETLK VDFLSKLPEM LKMFEDRLCH KTYLNGDHVT HPDFMLYDAL D VVLYMDPM CLDAFPKLVC FKKRIEAIPQ IDKYLKSSKY IAWPLQGWQA TFGGGDHPPK SDSQPKTPVP AQRERAPVSG TQ EKNKIRP RGQRDSSDDW EIEASEVMLS TRIGSGSFGT VYKGKWHGDV AVKILKVVDP TPEQFQAFRN EVAVLRKTRH VNI LLFMGY MTKDNLAIVT QWCEGSSLYK HLHVQETKFQ MFQLIDIARQ TAQGMDYLHA KNIIHRDMKS NNIFLHEGLT VKIG DFGLA TVKSRWSGSQ QVEQPTGSVL WMAPEVIRMQ DNNPFSFQSD VYSYGIVLYE LMTGELPYSH INNRDQIIFM VGRGY ASPD LSKLYKNCPK AMKRLVADCV KKVKEERPLF PQILSSIELL QHSLPKINRS A(SEP)EPSLHRAA HTEDINACTL TT SPRLPVF UniProtKB: Glutathione S-transferase class-mu 26 kDa isozyme, RAF proto-oncogene serine/threonine-protein kinase |
-Macromolecule #2: Dual specificity mitogen-activated protein kinase kinase 1
Macromolecule | Name: Dual specificity mitogen-activated protein kinase kinase 1 type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO / EC number: mitogen-activated protein kinase kinase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 43.518988 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: GMPKKKPTPI QLNPAPDGSA VNGTSSAETN LEALQKKLEE LELDEQQRKR LEAFLTQKQK VGELKDDDFE KISELGAGNG GVVFKVSHK PSGLVMARKL IHLEIKPAIR NQIIRELQVL HECNSPYIVG FYGAFYSDGE ISICMEHMDG GSLDQVLKKA G RIPEQILG ...String: GMPKKKPTPI QLNPAPDGSA VNGTSSAETN LEALQKKLEE LELDEQQRKR LEAFLTQKQK VGELKDDDFE KISELGAGNG GVVFKVSHK PSGLVMARKL IHLEIKPAIR NQIIRELQVL HECNSPYIVG FYGAFYSDGE ISICMEHMDG GSLDQVLKKA G RIPEQILG KVSIAVIKGL TYLREKHKIM HRDVKPSNIL VNSRGEIKLC DFGVSGQLID AMANAFVGTR SYMSPERLQG TH YSVQSDI WSMGLSLVEM AVGRYPIPPP DAKELELMFG CQVEGDAAET PPRPRTPGRP LSSYGMDSRP PMAIFELLDY IVN EPPPKL PSGVFSLEFQ DFVNKCLIKN PAERADLKQL MVHAFIKRSD AEEVDFAGWL CSTIGLNQPS TPTHAAGV UniProtKB: Dual specificity mitogen-activated protein kinase kinase 1 |
-Macromolecule #3: 14-3-3 protein sigma
Macromolecule | Name: 14-3-3 protein sigma / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 27.807064 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MERASLIQKA KLAEQAERYE DMAAFMKGAV EKGEELSCEE RNLLSVAYKN VVGGQRAAWR VLSSIEQKSN EEGSEEKGPE VREYREKVE TELQGVCDTV LGLLDSHLIK EAGDAESRVF YLKMKGDYYR YLAEVATGDD KKRIIDSARS AYQEAMDISK K EMPPTNPI ...String: MERASLIQKA KLAEQAERYE DMAAFMKGAV EKGEELSCEE RNLLSVAYKN VVGGQRAAWR VLSSIEQKSN EEGSEEKGPE VREYREKVE TELQGVCDTV LGLLDSHLIK EAGDAESRVF YLKMKGDYYR YLAEVATGDD KKRIIDSARS AYQEAMDISK K EMPPTNPI RLGLALNFSV FHYEIANSPE EAISLAKTTF DEAMADLHTL SEDSYKDSTL IMQLLRDNLT LWTADNAGEE GG EAPQEPQ S UniProtKB: 14-3-3 protein sigma |
-Macromolecule #4: N-[3-fluoro-4-({7-[(3-fluoropyridin-2-yl)oxy]-4-methyl-2-oxo-2H-1...
Macromolecule | Name: N-[3-fluoro-4-({7-[(3-fluoropyridin-2-yl)oxy]-4-methyl-2-oxo-2H-1-benzopyran-3-yl}methyl)pyridin-2-yl]-N'-methylsulfuric diamide type: ligand / ID: 4 / Number of copies: 2 / Formula: A1AHE |
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Molecular weight | Theoretical: 488.464 Da |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS GLACIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm |
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Image processing
Startup model | Type of model: EMDB MAP EMDB ID: |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.36 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 83248 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |