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- EMDB-42544: KIF1A[1-393] AMP-PNP bound two-heads-bound state in complex with ... -
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Basic information
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Title | KIF1A[1-393] AMP-PNP bound two-heads-bound state in complex with a microtubule - class T2L1 | |||||||||||||||||||||
![]() | Primary map, locally refined on the two central asymmetric units | |||||||||||||||||||||
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![]() | KIF1A / kinesin / motility / microtubule / tubulin / MOTOR PROTEIN | |||||||||||||||||||||
Function / homology | ![]() neuronal dense core vesicle membrane / plus-end-directed kinesin ATPase / dense core granule cytoskeletal transport / anterograde neuronal dense core vesicle transport / retrograde neuronal dense core vesicle transport / regulation of dendritic spine development / regulation of dendritic spine morphogenesis / anterograde axonal transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Resolution of Sister Chromatid Cohesion ...neuronal dense core vesicle membrane / plus-end-directed kinesin ATPase / dense core granule cytoskeletal transport / anterograde neuronal dense core vesicle transport / retrograde neuronal dense core vesicle transport / regulation of dendritic spine development / regulation of dendritic spine morphogenesis / anterograde axonal transport / Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Resolution of Sister Chromatid Cohesion / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Mitotic Prometaphase / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / EML4 and NUDC in mitotic spindle formation / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / Separation of Sister Chromatids / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / plus-end-directed microtubule motor activity / Kinesins / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / kinesin complex / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / COPI-mediated anterograde transport / COPI-dependent Golgi-to-ER retrograde traffic / neuronal dense core vesicle / cytoskeletal motor activity / microtubule-based process / vesicle-mediated transport / axon cytoplasm / structural constituent of cytoskeleton / microtubule cytoskeleton organization / mitotic cell cycle / microtubule cytoskeleton / microtubule binding / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microtubule / axon / GTPase activity / synapse / dendrite / GTP binding / perinuclear region of cytoplasm / ATP hydrolysis activity / ATP binding / metal ion binding / identical protein binding / cytoplasm Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() ![]() ![]() | |||||||||||||||||||||
Method | helical reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||||||||||||||
![]() | Benoit MPMH / Rao L / Asenjo AB / Gennerich A / Sosa H | |||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM unveils kinesin KIF1A's processivity mechanism and the impact of its pathogenic variant P305L. Authors: Matthieu P M H Benoit / Lu Rao / Ana B Asenjo / Arne Gennerich / Hernando Sosa / ![]() Abstract: Mutations in the microtubule-associated motor protein KIF1A lead to severe neurological conditions known as KIF1A-associated neurological disorders (KAND). Despite insights into its molecular ...Mutations in the microtubule-associated motor protein KIF1A lead to severe neurological conditions known as KIF1A-associated neurological disorders (KAND). Despite insights into its molecular mechanism, high-resolution structures of KIF1A-microtubule complexes remain undefined. Here, we present 2.7-3.5 Å resolution structures of dimeric microtubule-bound KIF1A, including the pathogenic P305L mutant, across various nucleotide states. Our structures reveal that KIF1A binds microtubules in one- and two-heads-bound configurations, with both heads exhibiting distinct conformations with tight inter-head connection. Notably, KIF1A's class-specific loop 12 (K-loop) forms electrostatic interactions with the C-terminal tails of both α- and β-tubulin. The P305L mutation does not disrupt these interactions but alters loop-12's conformation, impairing strong microtubule-binding. Structure-function analysis reveals the K-loop and head-head coordination as major determinants of KIF1A's superprocessive motility. Our findings advance the understanding of KIF1A's molecular mechanism and provide a basis for developing structure-guided therapeutics against KAND. | |||||||||||||||||||||
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Structure visualization
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Downloads & links
-EMDB archive
Map data | ![]() | 38.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 22.7 KB 22.7 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 14.8 KB | Display | ![]() |
Images | ![]() | 112.4 KB | ||
Masks | ![]() ![]() ![]() ![]() | 274.6 MB 274.6 MB 274.6 MB 274.6 MB | ![]() | |
Filedesc metadata | ![]() | 7.5 KB | ||
Others | ![]() ![]() | 219.1 MB 219.1 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8utoMC ![]() 8utnC ![]() 8utpC ![]() 8utqC ![]() 8utrC ![]() 8utsC ![]() 8uttC ![]() 8utuC ![]() 8utvC ![]() 8utwC ![]() 8utyC 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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Annotation | Primary map, locally refined on the two central asymmetric units | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.844 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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-Half map: Half map from the gold Standard refinement
File | emd_42544_half_map_1.map | ||||||||||||
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Annotation | Half map from the gold Standard refinement | ||||||||||||
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-Half map: Half map from the gold Standard refinement
File | emd_42544_half_map_2.map | ||||||||||||
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Annotation | Half map from the gold Standard refinement | ||||||||||||
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Sample components
+Entire : KIF1A - AMP-PNP two-heads-bound state in complex with a microtubu...
+Supramolecule #1: KIF1A - AMP-PNP two-heads-bound state in complex with a microtubu...
+Supramolecule #2: KIF1A - AMP-PNP
+Supramolecule #3: microtubule
+Macromolecule #1: Kinesin-like protein KIF1A
+Macromolecule #2: Tubulin alpha-1B chain
+Macromolecule #3: Tubulin beta-2B chain
+Macromolecule #4: MAGNESIUM ION
+Macromolecule #5: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
+Macromolecule #6: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #7: GUANOSINE-5'-DIPHOSPHATE
+Macromolecule #8: TAXOL
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | filament |
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Sample preparation
Buffer | pH: 6.8 Component:
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Grid | Model: UltrAuFoil / Material: GOLD / Pretreatment - Type: PLASMA CLEANING | ||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.22 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |