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Cryo-EM structure of the actomyosin-V complex in the rigor state (central 1ER, class 4)

Analyse Cryo-EM structure of the actomyosin-V complex in the rigor state (central 1ER… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7PLX
Type
protein
Length
1,264 residues
Chains
4
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Myosin light chain 6B; Unconventional myosin-va; Actin, alpha skeletal muscle; Phalloidin
UniProt
P14649, Q02440, P68135
Ligands
ADP, MG
Pockets
14 · best druggability 0.79

Structure

electron microscopy · 4 distinct chains · 48% helix, 16% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
BMyosin light chain 6Bprotein13960% helix, 7% strandP14649
AUnconventional myosin-vaprotein74748% helix, 16% strandQ02440
CActin, alpha skeletal muscleprotein37146% helix, 20% strandP68135
HPhalloidinprotein70% helix, 0% strand—

Ligands and binding sites

  • ADP · Adenosine-5'-diphosphate · ligand · chains C
  • MG · Magnesium ion · metal · chains C

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

14 pockets found on a 1 Å grid, 9 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
110680.790.8078empty
23510.760.8755ADP, MG
35760.690.7865empty
4580.660.9516empty
53550.600.7638empty

Interfaces

3 interfaces between chains.

  • B–A · 1525 Ų buried · 4 hydrogen bonds · protein-protein
  • A–C · 990 Ų buried · 7 hydrogen bonds · protein-protein
  • C–H · 217 Ų buried · 0 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 3 modified, 1 d-amino (D-amino acid, hydroxylation, methylation, nonstandard).

Compared structures

  • 7PLX · Cryo-EM structure of the actomyosin-V complex in the rigor state (central 1er, class 4) · the same entry in another collection · chain B against B, TM-score 1.00
  • P68135 · AlphaFold monomer V2.0 prediction for actin, alpha skeletal muscle (P68135) · a predicted model of the same protein · chain C against A, TM-score 0.96
  • P14649 · AlphaFold monomer V2.0 prediction for myosin light chain 6B (P14649) · a predicted model of the same protein · chain B against A, TM-score 0.94
  • Q02440 · AlphaFold monomer V2.0 prediction for unconventional myosin-va (Q02440) · a predicted model of the same protein · chain A against A, TM-score 0.94

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