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Complex: Myosin class V complex, MYO2 variant

Macromolecular complex annotations are imported from the Complex Portal. These annotations have been derived from physical molecular interaction evidence extracted from the literature and cross-referenced in the entry, or by curator inference from information on homologs in closely related species or by inference from scientific background.

Curated by
IntAct
ComplexAc
CPX-2225
Systematic Name
CMD1:MLC1:MYO2
SGD ID
SGD:S000218144
Aliases
Myo5 complex ; Myosin class 5 complex ; Unconventional myosin V complex
Description
Building block of the class V myosin processive molecular motor involved in a range of organelle-transporting functions, including the transport of vacuoles and mRNA. The myosin heavy chain motor domain mediates the ATP-dependent interaction with the F-actin cytoskeleton. The myosin neck region with the bound light chains acts as a rigid lever arm that amplifies movements within the myosin motor domain into a large mechanical stroke that directionally propels the myosin along the actin filament. Myosin V has a high duty cycle, i.e. remains attached to actin for a large fraction of the mechanochemical cycle due to the slow rate of ADP release, the rate-limiting step in the ATPase cycle. This kinetic adaptation allows myosin V to take multiple steps without dissociating from the actin filament. Myosin V can take large steps of approximately 36nm, a distance equal to the helical repeat of the actin filament allowing Myosin V to walk in a straight line on the actin filament, in a hand-over-hand fashion.

Complex Diagram

This diagram displays the protein subunits (blue) of the complex and how they interact with each other. Interactions with other relevant participants such as small molecules (purple), sub-complexes (yellow), and other subunits (red) are also shown. If a participant appears in the diagram with no lines connected to it, then its specific interactions with other participants are currently unknown.

PDB Structure

When available from the Protein Data Bank (PDB), the physical structure of the macromolecular complex is displayed. Click on the image or link for further information about the physical structure.

1M45 1M45 1M46 1M46 1N2D 1N2D

Subunits

This table lists all participants of the complex (proteins, small molecules, nucleic acids, etc.) and their respective stoichiometry. A brief description is also provided for each participant in the table.

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Subunit Description Stoichiometry

Gene Ontology

Gene Ontology (GO) terms that describe the function of a complex, the biological process in which it participates, or its cellular location. Click on a term for its definition and other objects annotated to that term.

Shared Annotations

This diagram displays Gene Ontology terms (green) and subunits (blue) that are shared between the given macromolecular complex (black) and other yeast complexes (yellow). The shared GO terms or subunits can be visualized separately using the radio button at the bottom of the graph. Note: No diagram is shown ("No shared annotations") if there are less than 2 shared annotations (either GO terms or subunits of other complexes) between this complex and any other complexes.

References

List of references used specifically to curate the information on this page.

Resources

IntAct | ModelArchive | PDB:1M45 | PDB:1M46 | PDB:1N2D