Structure of PDB 4pl8 Chain A

Receptor sequence

>4pl8A (length=357) Species: 9986 (Oryctolagus cuniculus) [Search protein sequence]

TTALVCDNGSGLVKAGFAGDDAPRAVFPSIVGRPSYVGDEAQSKRGILTL
KYPIEHGIITNWDDMEKIWHHTFYNELRVAPEEHPTLLTEAPLNPKANRE
KMTQIMFETFNVPAMYVAIQAVLSLYASGRTTGIVLDSGDGVTHNVPIYE
GYALPHAIMRLDLAGRDLTDYLMKILTERGYSFVTTAEREIVRDIKEKLC
YVALDFENEMATAASSSSLEKSYELPDGQVITIGNERFRCPETLFQPSFI
GMESAGIHETTYNSIMKCDIDIRKDLYANNVMSGGTTMYPGIADRMQKEI
TALAPSTMKIKIIAPPERKYSVWIGGSILASLSTFQQMWITKQEYDEAGP
SIVHRKC

3D structure

PDB

4pl8 Structural basis of thymosin-beta 4/profilin exchange leading to actin filament polymerization.

Chain

Resolution

2.0 Å

3D
structure

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Enzymatic activity

Enzyme Commision number

3.6.4.-

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	peptide	A	G23 D24 D25 A26 P27 R28 A29 V30 Y143 A144 T148 E167 Y337 I345 L349 S350 T351	G19 D20 D21 A22 P23 R24 A25 V26 Y126 A127 T131 E150 Y320 I328 L332 S333 T334
BS02	ATP	A	G13 S14 G15 K18 G156 D157 G158 V159 G182 K213 E214 G302 M305 Y306	G9 S10 G11 K14 G139 D140 G141 V142 G165 K196 E197 G285 M288 Y289

Gene Ontology

	Molecular Function
GO:0000287	magnesium ion binding
GO:0003785	actin monomer binding
GO:0005509	calcium ion binding
GO:0005515	protein binding
GO:0005523	tropomyosin binding
GO:0005524	ATP binding
GO:0016787	hydrolase activity
GO:0019904	protein domain specific binding
GO:0031013	troponin I binding
GO:0031432	titin binding
GO:0032036	myosin heavy chain binding
GO:0042802	identical protein binding
GO:0048306	calcium-dependent protein binding
GO:0140660	cytoskeletal motor activator activity

	Biological Process
GO:0010628	positive regulation of gene expression
GO:0030041	actin filament polymerization
GO:0030240	skeletal muscle thin filament assembly
GO:0048741	skeletal muscle fiber development
GO:0051017	actin filament bundle assembly
GO:0090131	mesenchyme migration

	Cellular Component
GO:0001725	stress fiber
GO:0005737	cytoplasm
GO:0005856	cytoskeleton
GO:0005865	striated muscle thin filament
GO:0005884	actin filament
GO:0030027	lamellipodium
GO:0030175	filopodium
GO:0031941	filamentous actin
GO:0032432	actin filament bundle
GO:0044297	cell body
GO:0098723	skeletal muscle myofibril

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Molecular Function

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Biological Process

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Cellular Component

External links

PDB	RCSB:4pl8, PDBe:4pl8, PDBj:4pl8
PDBsum	4pl8
PubMed	25313062
UniProt	P68135\|ACTS_RABIT Actin, alpha skeletal muscle (Gene Name=ACTA1)

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