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6BIH

The Structure of the Actin-Smooth Muscle Myosin Motor Domain Complex in the Rigor State

Functional Information from GO Data
ChainGOidnamespacecontents
C0000166molecular_functionnucleotide binding
C0000287molecular_functionmagnesium ion binding
C0001725cellular_componentstress fiber
C0003785molecular_functionactin monomer binding
C0005509molecular_functioncalcium ion binding
C0005515molecular_functionprotein binding
C0005523molecular_functiontropomyosin binding
C0005524molecular_functionATP binding
C0005737cellular_componentcytoplasm
C0005856cellular_componentcytoskeleton
C0005865cellular_componentstriated muscle thin filament
C0005884cellular_componentactin filament
C0010628biological_processpositive regulation of gene expression
C0016787molecular_functionhydrolase activity
C0019904molecular_functionprotein domain specific binding
C0030027cellular_componentlamellipodium
C0030041biological_processactin filament polymerization
C0030175cellular_componentfilopodium
C0030240biological_processskeletal muscle thin filament assembly
C0031013molecular_functiontroponin I binding
C0031432molecular_functiontitin binding
C0031941cellular_componentfilamentous actin
C0032036molecular_functionmyosin heavy chain binding
C0032432cellular_componentactin filament bundle
C0042802molecular_functionidentical protein binding
C0044297cellular_componentcell body
C0048306molecular_functioncalcium-dependent protein binding
C0048741biological_processskeletal muscle fiber development
C0051017biological_processactin filament bundle assembly
C0090131biological_processmesenchyme migration
C0098723cellular_componentskeletal muscle myofibril
C0140660molecular_functioncytoskeletal motor activator activity
H0003774molecular_functioncytoskeletal motor activity
H0005524molecular_functionATP binding
H0016459cellular_componentmyosin complex
H0051015molecular_functionactin filament binding
Functional Information from PDB Data
site_idAC1
Number of Residues11
Detailsbinding site for residue ADP C 401
ChainResidue
CGLY15
CTYR306
CLYS336
CLEU16
CLYS18
CASP157
CGLY158
CGLU214
CLYS215
CGLY302
CMET305

site_idAC2
Number of Residues5
Detailsbinding site for residue MG C 402
ChainResidue
CASP154
CSER300
CGLY301
CSER338
CVAL339

Functional Information from PROSITE/UniProt
site_idPS00406
Number of Residues11
DetailsACTINS_1 Actins signature 1. YVGDEAQs.KRG
ChainResidueDetails
CTYR53-GLY63

site_idPS00432
Number of Residues9
DetailsACTINS_2 Actins signature 2. WITKqEYDE
ChainResidueDetails
CTRP356-GLU364

site_idPS01132
Number of Residues13
DetailsACTINS_ACT_LIKE Actins and actin-related proteins signature. LLTEApLNPkaNR
ChainResidueDetails
CLEU104-ARG116

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues22
DetailsRegion: {"description":"Actin-binding"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues7
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsModified residue: {"description":"Blocked amino end (Ser)","evidences":[{"source":"PubMed","id":"3312184","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsModified residue: {"description":"N6,N6,N6-trimethyllysine","evidences":[{"source":"PubMed","id":"3312184","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues25
DetailsRegion: {"description":"Interaction with alpha-actinin","evidences":[{"source":"PubMed","id":"8449927","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"N-acetylaspartate; in Actin, alpha skeletal muscle","evidences":[{"source":"PubMed","id":"1150665","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues2
DetailsModified residue: {"description":"Methionine (R)-sulfoxide","evidences":[{"source":"UniProtKB","id":"P68134","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues1
DetailsModified residue: {"description":"N6-malonyllysine","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsModified residue: {"description":"Tele-methylhistidine","evidences":[{"source":"PubMed","id":"1150665","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"16905096","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"213279","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"2395459","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"499690","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1ATN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1NWK","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues1
DetailsModified residue: {"description":"N6-methyllysine","evidences":[{"source":"UniProtKB","id":"P68133","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues1
DetailsModified residue: {"description":"ADP-ribosylarginine; by SpvB","evidences":[{"source":"PubMed","id":"16905096","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

247536

PDB entries from 2026-01-14

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