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- EMDB-12257: Plasmodium falciparum kinesin-5 motor domain without nucleotide, ... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-12257 | |||||||||||||||
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Title | Plasmodium falciparum kinesin-5 motor domain without nucleotide, complexed with 14 protofilament microtubule. | |||||||||||||||
![]() | Asymmetric unit of Plasmodium falciparum kinesin-5 motor domain without nucleotide, in complex with porcine 14 protofilament microtubules. | |||||||||||||||
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![]() | Cytoskeleton / motor protein / mitosis | |||||||||||||||
Function / homology | ![]() Kinesins / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins ...Kinesins / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Separation of Sister Chromatids / plus-end-directed microtubule motor activity / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / Recruitment of NuMA to mitotic centrosomes / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / COPI-mediated anterograde transport / microtubule motor activity / kinesin complex / microtubule-based movement / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / structural constituent of cytoskeleton / microtubule cytoskeleton organization / microtubule cytoskeleton / mitotic cell cycle / microtubule binding / microtubule / GTPase activity / GTP binding / ATP binding / metal ion binding / cytoplasm Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||||||||
Method | helical reconstruction / cryo EM / Resolution: 4.4 Å | |||||||||||||||
![]() | Cook AD / Roberts A | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structure of a microtubule-bound parasite kinesin motor and implications for its mechanism and inhibition. Authors: Alexander D Cook / Anthony J Roberts / Joseph Atherton / Rita Tewari / Maya Topf / Carolyn A Moores / ![]() Abstract: Plasmodium parasites cause malaria and are responsible annually for hundreds of thousands of deaths. Kinesins are a superfamily of microtubule-dependent ATPases that play important roles in the ...Plasmodium parasites cause malaria and are responsible annually for hundreds of thousands of deaths. Kinesins are a superfamily of microtubule-dependent ATPases that play important roles in the parasite replicative machinery, which is a potential target for antiparasite drugs. Kinesin-5, a molecular motor that cross-links microtubules, is an established antimitotic target in other disease contexts, but its mechanism in Plasmodium falciparum is unclear. Here, we characterized P. falciparum kinesin-5 (PfK5) using cryo-EM to determine the motor's nucleotide-dependent microtubule-bound structure and introduced 3D classification of individual motors into our microtubule image processing pipeline to maximize our structural insights. Despite sequence divergence in PfK5, the motor exhibits classical kinesin mechanochemistry, including ATP-induced subdomain rearrangement and cover neck bundle formation, consistent with its plus-ended directed motility. We also observed that an insertion in loop5 of the PfK5 motor domain creates a different environment in the well-characterized human kinesin-5 drug-binding site. Our data reveal the possibility for selective inhibition of PfK5 and can be used to inform future exploration of Plasmodium kinesins as antiparasite targets. | |||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 370.7 KB | ![]() | |
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Header (meta data) | ![]() ![]() | 23.4 KB 23.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 15.4 KB | Display | ![]() |
Images | ![]() | 106.9 KB | ||
Filedesc metadata | ![]() | 7.4 KB | ||
Others | ![]() ![]() | 170.9 MB 167.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7nb8MC ![]() 7nbaC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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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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Annotation | Asymmetric unit of Plasmodium falciparum kinesin-5 motor domain without nucleotide, in complex with porcine 14 protofilament microtubules. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.39 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: Asymmetric (C1) reconstruction of Plasmodium falciparum kinesin-5 motor...
File | emd_12257_additional_1.map | ||||||||||||
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Annotation | Asymmetric (C1) reconstruction of Plasmodium falciparum kinesin-5 motor domain without nucleotide, in complex with porcine 14 protofilament microtubules. | ||||||||||||
Projections & Slices |
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Density Histograms |
-Additional map: Symmetry expanded reconstruction of Plasmodium falciparum kinesin-5 motor...
File | emd_12257_additional_2.map | ||||||||||||
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Annotation | Symmetry expanded reconstruction of Plasmodium falciparum kinesin-5 motor without nucleotide, in complex with porcine 14 protofilament microtubules. After motor domain 3D classification. | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : 14 protofilament microtubule of alpha/beta-tubulin dimers, with k...
Entire | Name: 14 protofilament microtubule of alpha/beta-tubulin dimers, with kinesin-5 motor domain bound 1:1 to tubulin dimers. |
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Components |
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-Supramolecule #1: 14 protofilament microtubule of alpha/beta-tubulin dimers, with k...
Supramolecule | Name: 14 protofilament microtubule of alpha/beta-tubulin dimers, with kinesin-5 motor domain bound 1:1 to tubulin dimers. type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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-Supramolecule #2: alpha/beta-tubulin
Supramolecule | Name: alpha/beta-tubulin / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#2 |
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Source (natural) | Organism: ![]() ![]() |
-Supramolecule #3: Kinesin-5
Supramolecule | Name: Kinesin-5 / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #3 |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: Tubulin alpha-1B chain
Macromolecule | Name: Tubulin alpha-1B chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 50.204445 KDa |
Sequence | String: MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TIGGGDDSFN TFFSETGAGK HVPRAVFVDL EPTVIDEVRT GTYRQLFHP EQLITGKEDA ANNYARGHYT IGKEIIDLVL DRIRKLADQC TGLQGFLVFH SFGGGTGSGF TSLLMERLSV D YGKKSKLE ...String: MRECISIHVG QAGVQIGNAC WELYCLEHGI QPDGQMPSDK TIGGGDDSFN TFFSETGAGK HVPRAVFVDL EPTVIDEVRT GTYRQLFHP EQLITGKEDA ANNYARGHYT IGKEIIDLVL DRIRKLADQC TGLQGFLVFH SFGGGTGSGF TSLLMERLSV D YGKKSKLE FSIYPAPQVS TAVVEPYNSI LTTHTTLEHS DCAFMVDNEA IYDICRRNLD IERPTYTNLN RLISQIVSSI TA SLRFDGA LNVDLTEFQT NLVPYPRIHF PLATYAPVIS AEKAYHEQLS VAEITNACFE PANQMVKCDP RHGKYMACCL LYR GDVVPK DVNAAIATIK TKRSIQFVDW CPTGFKVGIN YQPPTVVPGG DLAKVQRAVC MLSNTTAIAE AWARLDHKFD LMYA KRAFV HWYVGEGMEE GEFSEAREDM AALEKDYEEV GVDSVEGEGE EEGEEY UniProtKB: Tubulin alpha-1B chain |
-Macromolecule #2: Tubulin beta chain
Macromolecule | Name: Tubulin beta chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 49.90777 KDa |
Sequence | String: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGSYHGDS DLQLERINVY YNEAAGNKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDN FVFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKESESCDC LQGFQLTHSL GGGTGSGMGT LLISKIREEY P DRIMNTFS ...String: MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGSYHGDS DLQLERINVY YNEAAGNKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDN FVFGQSGAGN NWAKGHYTEG AELVDSVLDV VRKESESCDC LQGFQLTHSL GGGTGSGMGT LLISKIREEY P DRIMNTFS VVPSPKVSDT VVEPYNATLS VHQLVENTDE TYCIDNEALY DICFRTLKLT TPTYGDLNHL VSATMSGVTT CL RFPGQLN ADLRKLAVNM VPFPRLHFFM PGFAPLTSRG SQQYRALTVP ELTQQMFDAK NMMAACDPRH GRYLTVAAVF RGR MSMKEV DEQMLNVQNK NSSYFVEWIP NNVKTAVCDI PPRGLKMSAT FIGNSTAIQE LFKRISEQFT AMFRRKAFLH WYTG EGMDE MEFTEAESNM NDLVSEYQQY QDATADEQGE FEEEGEEDEA UniProtKB: Tubulin beta chain |
-Macromolecule #3: Kinesin-5
Macromolecule | Name: Kinesin-5 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 46.910113 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GIDPFTMLRN SYNNDKSSCV NIKVIVRCRP LNEKEKNDIN NEEVVRINNN EVILTINRNN EIYEKKYSFD YACDKDVDQK TLFNNYIYQ IVDEVLQGFN CTLFCYGQTG TGKTYTMEGK ILEHLKQYDN NKKVDLNESI NSDISYCYEL CENEDTGLIF R VTKRIFDI ...String: GIDPFTMLRN SYNNDKSSCV NIKVIVRCRP LNEKEKNDIN NEEVVRINNN EVILTINRNN EIYEKKYSFD YACDKDVDQK TLFNNYIYQ IVDEVLQGFN CTLFCYGQTG TGKTYTMEGK ILEHLKQYDN NKKVDLNESI NSDISYCYEL CENEDTGLIF R VTKRIFDI LNKRKEEKIR HFDKNMYDFN IKISYLEIYN EELCDLLSST NENMKLRIYE DSNNKSKGLN VDKLEEKSIN SF EEIYYII CSAIKKRRTA ETAYNKKSSR SHSIFTITLI IKDINNVGES ITKIGKLNLV DLAGSENALK SSYGSLKIRQ QES CNINQS LLTLGRVINS LIENSSYIPY RDSKLTRLLQ DSLGGKTKTF IVATISPSSL CIDETLSTLD YVFRAKNIKN RPEI NIKTT UniProtKB: Kinesin-5 |
-Macromolecule #4: GUANOSINE-5'-TRIPHOSPHATE
Macromolecule | Name: GUANOSINE-5'-TRIPHOSPHATE / type: ligand / ID: 4 / Number of copies: 1 / Formula: GTP |
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Molecular weight | Theoretical: 523.18 Da |
Chemical component information | ![]() ChemComp-GTP: |
-Macromolecule #5: MAGNESIUM ION
Macromolecule | Name: MAGNESIUM ION / type: ligand / ID: 5 / Number of copies: 2 / Formula: MG |
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Molecular weight | Theoretical: 24.305 Da |
-Macromolecule #6: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
Macromolecule | Name: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER / type: ligand / ID: 6 / Number of copies: 1 / Formula: G2P |
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Molecular weight | Theoretical: 521.208 Da |
Chemical component information | ![]() ChemComp-G2P: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | filament |
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Sample preparation
Concentration | 3.7 mg/mL | |||||||||||||||
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Buffer | pH: 8 Component:
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Grid | Model: UltrAuFoil R1.2/1.3 / Material: GOLD / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 0.0003 kPa | |||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 296 K / Instrument: FEI VITROBOT MARK IV Details: 3.5 uM microtubules were incubated to the grid and incubated for 30 seconds. The grid was blotted, then 40 uM kinesin motor domain added and incubated for 30 seconds. The grid was again ...Details: 3.5 uM microtubules were incubated to the grid and incubated for 30 seconds. The grid was blotted, then 40 uM kinesin motor domain added and incubated for 30 seconds. The grid was again blotted and 40 uM kinesin motor domain added for 30 seconds. Then the grid was blotted and plunge frozen.. |
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Electron microscopy
Microscope | FEI POLARA 300 |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number grids imaged: 1 / Number real images: 335 / Average exposure time: 18.0 sec. / Average electron dose: 58.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.0 mm |
Experimental equipment | ![]() Model: Tecnai Polara / Image courtesy: FEI Company |