Polylysine induces an antiparallel actin dimer that nucleates filament assembly: crystal structure at 3.5-A resolution.

139717 Biological Macromolecular Structures Enabling Breakthroughs in Research and Education

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A15-157	d1lcua1	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Actin-like ATPase domain	Actin/HSP70	Actin	Rabbit (Oryctolagus cuniculus) [TaxId: 9986]
A158-385	d1lcua2	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Actin-like ATPase domain	Actin/HSP70	Actin	Rabbit (Oryctolagus cuniculus) [TaxId: 9986]
B1015-1157	d1lcub1	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Actin-like ATPase domain	Actin/HSP70	Actin	Rabbit (Oryctolagus cuniculus) [TaxId: 9986]
B1158-1385	d1lcub2	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Actin-like ATPase domain	Actin/HSP70	Actin	Rabbit (Oryctolagus cuniculus) [TaxId: 9986]

Chains	Domain	Class	Architecture	Topology	Homology
A1	1lcuA01	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase; domain 5
A2	1lcuA02	Mainly Beta	Roll	Actin; Chain A, domain 2	Actin; Chain A, domain 2
A3	1lcuA03	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase; domain 5
A4	1lcuA04	Alpha Beta	Alpha-Beta Complex	Actin; Chain A, domain 4	Actin; Chain A, domain 4
B1	1lcuB01	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase; domain 5
B2	1lcuB02	Mainly Beta	Roll	Actin; Chain A, domain 2	Actin; Chain A, domain 2
B3	1lcuB03	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase; domain 5
B4	1lcuB04	Alpha Beta	Alpha-Beta Complex	Actin; Chain A, domain 4	Actin; Chain A, domain 4

Chains	Pfam Accession	Pfam Identifier	Pfam Description	Type	Source

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A,B	Actin, alpha skeletal muscle (1LCU:A,B)	Nucleotide Binding Magnesium Ion Binding Actin Monomer Binding Calcium Ion Binding Protein Binding Tropomyosin Binding ATP Binding Protein Domain Specific Binding Troponin I Binding Titin Binding Myosin Heavy Chain Binding Identical Protein Binding Calcium Dependent Protein Binding	Positive Regulation of Gene Expression Actin Filament Polymerization Skeletal Muscle Thin Filament Assembly Skeletal Muscle Fiber Development Actin Filament Bundle Assembly Mesenchyme Migration Positive Regulation of Actin Dependent Atpase Activity	Stress Fiber Cytoplasm Cytoskeleton Striated Muscle Thin Filament Actin Filament Lamellipodium Filopodium Filamentous Actin Actin Filament Bundle Cell Body Skeletal Muscle Myofibril

Type	PDB Residue Nr.	Description