Structure of PDB 4h0x Chain B

Receptor sequence

>4h0xB (length=358) Species: 9986 (Oryctolagus cuniculus) [Search protein sequence]

TTALVCDNGSGLVKAGFAGDDAPRAVFPSIVGRKDSYVGDEAQSKRGILT
LKYPIEHGIITNWDDMEKIWHHTFYNELRVAPEEHPTLLTEAPLNPKANR
EKMTQIMFETFNVPAMYVAIQAVLSLYASGRTTGIVLDSGDGVTHNVPIY
EGYALPHAIMRLDLAGRDLTDYLMKILTERGYSFVTTAEREIVRDIKEKL
CYVALDFENEMATAASSSSLEKSYELPDGQVITIGNERFRCPETLFQPSF
IGMESAGIHETTYNSIMKCDIDIRKDLYANNVMSGGTTMYPGIADRMQKE
ITALAPSTMKIKIIAPPERKYSVWIGGSILASLSTFQQMWITKQEYDEAG
PSIVHRKC

3D structure

PDB

4h0x Arginine ADP-ribosylation mechanism based on structural snapshots of iota-toxin and actin complex

Chain

Resolution

2.33 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	ATP	B	G13 S14 G15 L16 K18 G156 D157 G158 V159 G182 R210 K213 E214 G302 M305 Y306 K336	G9 S10 G11 L12 K14 G140 D141 G142 V143 G166 R194 K197 E198 G286 M289 Y290 K320
BS02	LAR	B	L16 P32 Q59 L67 Y69 D157 R183 T186 R206 E207 R210	L12 P28 Q43 L51 Y53 D141 R167 T170 R190 E191 R194

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

View graph for
Molecular Function

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Biological Process

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Cellular Component

External links

PDB	RCSB:4h0x, PDBe:4h0x, PDBj:4h0x
PDBsum	4h0x
PubMed	23382240
UniProt	P68135\|ACTS_RABIT Actin, alpha skeletal muscle (Gene Name=ACTA1)

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