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- EMDB-23929: Autoinhibited neurofibrobmin -

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Basic information

Entry
Database: EMDB / ID: EMD-23929
TitleAutoinhibited neurofibrobmin
Map data
Sample
  • Complex: Neurofibromin
    • Protein or peptide: Isoform I of Neurofibromin
Keywordsscaffold / RAS-GAP / HEAT repeat / autoinhibition / tumour suppressor / ANTITUMOR PROTEIN
Function / homology
Function and homology information


positive regulation of mast cell apoptotic process / negative regulation of Rac protein signal transduction / regulation of glial cell differentiation / observational learning / Schwann cell migration / negative regulation of Schwann cell migration / vascular associated smooth muscle cell migration / amygdala development / negative regulation of mast cell proliferation / gamma-aminobutyric acid secretion, neurotransmission ...positive regulation of mast cell apoptotic process / negative regulation of Rac protein signal transduction / regulation of glial cell differentiation / observational learning / Schwann cell migration / negative regulation of Schwann cell migration / vascular associated smooth muscle cell migration / amygdala development / negative regulation of mast cell proliferation / gamma-aminobutyric acid secretion, neurotransmission / mast cell apoptotic process / Schwann cell proliferation / vascular associated smooth muscle cell proliferation / mast cell proliferation / glutamate secretion, neurotransmission / negative regulation of Schwann cell proliferation / negative regulation of leukocyte migration / negative regulation of neurotransmitter secretion / negative regulation of vascular associated smooth muscle cell migration / positive regulation of adenylate cyclase activity / forebrain morphogenesis / hair follicle maturation / regulation of cell-matrix adhesion / regulation of blood vessel endothelial cell migration / smooth muscle tissue development / camera-type eye morphogenesis / cell communication / negative regulation of oligodendrocyte differentiation / peripheral nervous system development / sympathetic nervous system development / myeloid leukocyte migration / myelination in peripheral nervous system / phosphatidylcholine binding / positive regulation of extrinsic apoptotic signaling pathway in absence of ligand / metanephros development / negative regulation of Ras protein signal transduction / phosphatidylethanolamine binding / regulation of bone resorption / collagen fibril organization / regulation of long-term synaptic potentiation / neural tube development / endothelial cell proliferation / forebrain astrocyte development / artery morphogenesis / pigmentation / regulation of postsynapse organization / negative regulation of neuroblast proliferation / negative regulation of protein import into nucleus / adrenal gland development / regulation of synaptic transmission, GABAergic / negative regulation of cell-matrix adhesion / regulation of GTPase activity / spinal cord development / Rac protein signal transduction / negative regulation of osteoclast differentiation / negative regulation of endothelial cell proliferation / oligodendrocyte differentiation / RAS signaling downstream of NF1 loss-of-function variants / negative regulation of astrocyte differentiation / extrinsic apoptotic signaling pathway via death domain receptors / neuroblast proliferation / negative regulation of MAPK cascade / regulation of angiogenesis / Schwann cell development / negative regulation of stem cell proliferation / extrinsic apoptotic signaling pathway in absence of ligand / negative regulation of fibroblast proliferation / negative regulation of MAP kinase activity / positive regulation of vascular associated smooth muscle cell proliferation / skeletal muscle tissue development / positive regulation of endothelial cell proliferation / phosphatidylinositol 3-kinase/protein kinase B signal transduction / regulation of ERK1 and ERK2 cascade / GTPase activator activity / extracellular matrix organization / negative regulation of angiogenesis / osteoclast differentiation / liver development / positive regulation of GTPase activity / negative regulation of cell migration / stem cell proliferation / long-term synaptic potentiation / negative regulation of protein kinase activity / wound healing / regulation of long-term neuronal synaptic plasticity / brain development / visual learning / cerebral cortex development / cognition / osteoblast differentiation / Regulation of RAS by GAPs / protein import into nucleus / positive regulation of neuron apoptotic process / MAPK cascade / heart development / presynapse / cellular response to heat / actin cytoskeleton organization / fibroblast proliferation / regulation of gene expression
Similarity search - Function
: / PH domain-like / Ras GTPase-activating protein / Ras GTPase-activating protein, conserved site / Ras GTPase-activating proteins domain signature. / GTPase-activator protein for Ras-like GTPase / Ras GTPase-activating proteins profile. / GTPase-activator protein for Ras-like GTPases / Ras GTPase-activating domain / Divergent CRAL/TRIO domain ...: / PH domain-like / Ras GTPase-activating protein / Ras GTPase-activating protein, conserved site / Ras GTPase-activating proteins domain signature. / GTPase-activator protein for Ras-like GTPase / Ras GTPase-activating proteins profile. / GTPase-activator protein for Ras-like GTPases / Ras GTPase-activating domain / Divergent CRAL/TRIO domain / CRAL-TRIO lipid binding domain profile. / Domain in homologues of a S. cerevisiae phosphatidylinositol transfer protein (Sec14p) / CRAL-TRIO lipid binding domain / CRAL-TRIO lipid binding domain superfamily / Rho GTPase activation protein / PH-like domain superfamily / Armadillo-type fold
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 5.6 Å
AuthorsLupton CJ / Bayly-Jones C
Funding support Australia, 1 items
OrganizationGrant numberCountry
Not funded Australia
CitationJournal: Nat Struct Mol Biol / Year: 2021
Title: The cryo-EM structure of the human neurofibromin dimer reveals the molecular basis for neurofibromatosis type 1.
Authors: Christopher J Lupton / Charles Bayly-Jones / Laura D'Andrea / Cheng Huang / Ralf B Schittenhelm / Hari Venugopal / James C Whisstock / Michelle L Halls / Andrew M Ellisdon /
Abstract: Neurofibromin (NF1) mutations cause neurofibromatosis type 1 and drive numerous cancers, including breast and brain tumors. NF1 inhibits cellular proliferation through its guanosine triphosphatase- ...Neurofibromin (NF1) mutations cause neurofibromatosis type 1 and drive numerous cancers, including breast and brain tumors. NF1 inhibits cellular proliferation through its guanosine triphosphatase-activating protein (GAP) activity against rat sarcoma (RAS). In the present study, cryo-electron microscope studies reveal that the human ~640-kDa NF1 homodimer features a gigantic 30 × 10 nm array of α-helices that form a core lemniscate-shaped scaffold. Three-dimensional variability analysis captured the catalytic GAP-related domain and lipid-binding SEC-PH domains positioned against the core scaffold in a closed, autoinhibited conformation. We postulate that interaction with the plasma membrane may release the closed conformation to promote RAS inactivation. Our structural data further allow us to map the location of disease-associated NF1 variants and provide a long-sought-after structural explanation for the extreme susceptibility of the molecule to loss-of-function mutations. Collectively these findings present potential new routes for therapeutic modulation of the RAS pathway.
History
DepositionMay 4, 2021-
Header (metadata) releaseDec 15, 2021-
Map releaseDec 15, 2021-
UpdateMay 29, 2024-
Current statusMay 29, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.194
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.194
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7mp5
  • Surface level: 0.23
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7mp5
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_23929.png

Downloads & links

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Map

FileDownload / File: emd_23929.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.19 Å/pix.
x 256 pix.
= 305.664 Å		1.19 Å/pix.
x 256 pix.
= 305.664 Å		1.19 Å/pix.
x 256 pix.
= 305.664 Å

Surface

Projections

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.194 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.194 / Movie #1: 0.194
Minimum - Maximum-0.57257587 - 1.5165111
Average (Standard dev.)0.0007460399 (±0.06536264)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 305.664 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.1941.1941.194
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z305.664305.664305.664
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ450450450
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.5731.5170.001

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Supplemental data

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Mask #1

Fileemd_23929_msk_1.map
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Additional map: Sharpened map

Fileemd_23929_additional_1.map
AnnotationSharpened map
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Half map: #1

Fileemd_23929_half_map_1.map
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Half map: #2

Fileemd_23929_half_map_2.map
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Sample components

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Entire : Neurofibromin

EntireName: Neurofibromin
Components
  • Complex: Neurofibromin
    • Protein or peptide: Isoform I of Neurofibromin

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Supramolecule #1: Neurofibromin

SupramoleculeName: Neurofibromin / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all / Details: Autoinhibited state of neurofibromin
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 636 KDa

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Macromolecule #1: Isoform I of Neurofibromin

MacromoleculeName: Isoform I of Neurofibromin / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 318.407812 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MDYKDDDDKA AHRPVEWVQA VVSRFDEQLP IKTGQQNTHT KVSTEHNKEC LINISKYKFS LVISGLTTIL KNVNNMRIFG EAAEKNLYL SQLIILDTLE KCLAGQPKDT MRLDETMLVK QLLPEICHFL HTCREGNQHA AELRNSASGV LFSLSCNNFN A VFSRISTR ...String:
MDYKDDDDKA AHRPVEWVQA VVSRFDEQLP IKTGQQNTHT KVSTEHNKEC LINISKYKFS LVISGLTTIL KNVNNMRIFG EAAEKNLYL SQLIILDTLE KCLAGQPKDT MRLDETMLVK QLLPEICHFL HTCREGNQHA AELRNSASGV LFSLSCNNFN A VFSRISTR LQELTVCSED NVDVHDIELL QYINVDCAKL KRLLKETAFK FKALKKVAQL AVINSLEKAF WNWVENYPDE FT KLYQIPQ TDMAECAEKL FDLVDGFAES TKRKAAVWPL QIILLILCPE IIQDISKDVV DENNMNKKLF LDSLRKALAG HGG SRQLTE SAAIACVKLC KASTYINWED NSVIFLLVQS MVVDLKNLLF NPSKPFSRGS QPADVDLMID CLVSCFRISP HNNQ HFKIC LAQNSPSTFH YVLVNSLHRI ITNSALDWWP KIDAVYCHSV ELRNMFGETL HKAVQGCGAH PAIRMAPSLT FKEKV TSLK FKEKPTDLET RSYKYLLLSM VKLIHADPKL LLCNPRKQGP ETQGSTAELI TGLVQLVPQS HMPEIAQEAM EALLVL HQL DSIDLWNPDA PVETFWEISS QMLFYICKKL TSHQMLSSTE ILKWLREILI CRNKFLLKNK QADRSSCHFL LFYGVGC DI PSSGNTSQMS MDHEELLRTP GASLRKGKGN SSMDSAAGCS GTPPICRQAQ TKLEVALYMF LWNPDTEAVL VAMSCFRH L CEEADIRCGV DEVSVHNLLP NYNTFMEFAS VSNMMSTGRA ALQKRVMALL RRIEHPTAGN TEAWEDTHAK WEQATKLIL NYPKAKMEDG QAAESLHKTI VKRRMSHVSG GGSIDLSDTD SLQEWINMTG FLCALGGVCL QQRSNSGLAT YSPPMGPVSE RKGSMISVM SSEGNADTPV SKFMDRLLSL MVCNHEKVGL QIRTNVKDLV GLELSPALYP MLFNKLKNTI SKFFDSQGQV L LTDTNTQF VEQTIAIMKN LLDNHTEGSS EHLGQASIET MMLNLVRYVR VLGNMVHAIQ IKTKLCQLVE VMMARRDDLS FC QEMKFRN KMVEYLTDWV MGTSNQAADD DVKCLTRDLD QASMEAVVSL LAGLPLQPEE GDGVELMEAK SQLFLKYFTL FMN LLNDCS EVEDESAQTG GRKRGMSRRL ASLRHCTVLA MSNLLNANVD SGLMHSIGLG YHKDLQTRAT FMEVLTKILQ QGTE FDTLA ETVLADRFER LVELVTMMGD QGELPIAMAL ANVVPCSQWD ELARVLVTLF DSRHLLYQLL WNMFSKEVEL ADSMQ TLFR GNSLASKIMT FCFKVYGATY LQKLLDPLLR IVITSSDWQH VSFEVDPTRL EPSESLEENQ RNLLQMTEKF FHAIIS SSS EFPPQLRSVC HCLYQVVSQR FPQNSIGAVG SAMFLRFINP AIVSPYEAGI LDKKPPPRIE RGLKLMSKIL QSIANHV LF TKEEHMRPFN DFVKSNFDAA RRFFLDIASD CPTSDAVNHS LSFISDGNVL ALHRLLWNNQ EKIGQYLSSN RDHKAVGR R PFDKMATLLA YLGPPEHKPV ADTHWSSLNL TSSKFEEFMT RHQVHEKEEF KALKTLSIFY QAGTSKAGNP IFYYVARRF KTGQINGDLL IYHVLLTLKP YYAKPYEIVV DLTHTGPSNR FKTDFLSKWF VVFPGFAYDN VSAVYIYNCN SWVREYTKYH ERLLTGLKG SKRLVFIDCP GKLAEHIEHE QQKLPAATLA LEEDLKVFHN ALKLAHKDTK VSIKVGSTAV QVTSAERTKV L GQSVFLND IYYASEIEEI CLVDENQFTL TIANQGTPLT FMHQECEAIV QSIIHIRTRW ELSQPDSIPQ HTKIRPKDVP GT LLNIALL NLGSSDPSLR SAAYNLLCAL TCTFNLKIEG QLLETSGLCI PANNTLFIVS ISKTLAANEP HLTLEFLEEC ISG FSKSSI ELKHLCLEYM TPWLSNLVRF CKHNDDAKRQ RVTAILDKLI TMTINEKQMY PSIQAKIWGS LGQITDLLDV VLDS FIKTS ATGGLGSIKA EVMADTAVAL ASGNVKLVSS KVIGRMCKII DKTCLSPTPT LEQHLMWDDI AILARYMLML SFNNS LDVA AHLPYLFHVV TFLVATGPLS LRASTHGLVI NIIHSLCTCS QLHFSEETKQ VLRLSLTEFS LPKFYLLFGI SKVKSA AVI AFRSSYRDRS FSPGSYERET FALTSLETVT EALLEIMEAC MRDIPTCKWL DQWTELAQRF AFQYNPSLQP RALVVFG CI SKRVSHGQIK QIIRILSKAL ESCLKGPDTY NSQVLIEATV IALTKLQPLL NKDSPLHKAL FWVAVAVLQL DEVNLYSA G TALLEQNLHT LDSLRIFNDK SPEEVFMAIR NPLEWHCKQM DHFVGLNFNS NFNFALVGHL LKGYRHPSPA IVARTVRIL HTLLTLVNKH RNCDKFEVNT QSVAYLAALL TVSEEVRSRC SLKHRKSLLL TDISMENVPM DTYPIHHGDP SYRTLKETQP WSSPKGSEG YLAATYPTVG QTSPRARKSM SLDMGQPSQA NTKKLLGTRK SFDHLISDTK APKRQEMESG ITTPPKMRRV A ETDYEMET QRISSSQQHP HLRKVSVSES NVLLDEEVLT DPKIQALLLT VLATLVKYTT DEFDQRILYE YLAEASVVFP KV FPVVHNL LDSKINTLLS LCQDPNLLNP IHGIVQSVVY HEESPPQYQT SYLQSFGFNG LWRFAGPFSK QTQIPDYAEL IVK FLDALI DTYLPGIDEE TSEESLLTPT SPYPPALQSQ LSITANLNLS NSMTSLATSQ HSPGIDKENV ELSPTTGHCN SGRT RHGSA SQVQKQRSAG SFKRNSIKKI V

UniProtKB: Neurofibromin

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.4 mg/mL
BufferpH: 8
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE / Details: Ab initio
Final reconstructionResolution.type: BY AUTHOR / Resolution: 5.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 9238
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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