Myosin-5 - Q04439 (MYO5_YEAST)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q04439: 2
 
Function
One of two redundant type-I myosins implicated in the organization of the actin cytoskeleton. Required for proper actin cytoskeleton polarization and for the internalization step in endocytosis. At the cell cortex, assembles in patch-like structures together with proteins from the actin-polymerizing machinery and promotes actin assembly. Functions redundantly with LAS17 as actin nucleation-promoting factor (NPF) for the Arp2/3 complex. Motor domain phosphorylation by PAK kinases CLA4 and STE20 promotes CDC42-regulated actin assembly. Functions together with the NPF PAN1 in late stages of endocytosis. Motor domain phosphorylation by PDK1 kinases PKH1 and PKH2, and by SGK kinases YPK1 and YPK2, promotes ligand-induced, but not constitutive endocytosis of the G protein-coupled receptor STE2. UniProt
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Subunit Structure
Interacts (via myosin motor domain) with SHE4; this interaction is important for proper localization and may regulate the interaction of the motor domain with actin. Interacts (via SH3 domain) with VRP1; this interaction is required for localization to sites of polarized growth and may regulate the interaction of the tail domain with actin. Interacts (via SH3 domain) with PAN1; this interaction is important for late stages of endocytopsis. Interacts (via SH3 domain) with BBC1 and LAS17. Interacts (via C-terminal acidic tail) with ARC19 and ARC40; ARC19 and ARC40 are Arp2/3 complex subunits. Interacts with BZZ1, PKH1, PKH2, YPK1 and YPK2. UniProt
Domain
The tail domain participates in molecular interactions that specify the role of the motor domain. It is composed of several tail homology (TH) domains, namely a putative phospholipid-binding myosin tail domain (also named TH1), an Ala- and Pro-rich domain (TH2), followed by an SH3 domain and a C-terminal acidic domain (TH3). UniProt
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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