SAXSdb — 8c4c

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Actin, alpha skeletal muscle

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Cell invasion protein SipA × 4 （Q8VQB5） ADENOSINE-5'-DIPHOSPHATE × 8 PHOSPHATE ION × 8 MAGNESIUM ION × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	ACTS_CHICK
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–377； UniProt 1–377 Author chain B； PDBConstruct 1–377； UniProt 1–377 Author chain C； PDBConstruct 1–377； UniProt 1–377 Author chain D； PDBConstruct 1–377； UniProt 1–377 Author chain E； PDBConstruct 1–377； UniProt 1–377 Author chain F； PDBConstruct 1–377； UniProt 1–377 Author chain G； PDBConstruct 1–377； UniProt 1–377 Author chain H； PDBConstruct 1–377； UniProt 1–377

Cell invasion protein SipA

Salmonella enterica subsp. enterica serovar Typhimurium str. LT2

UniProt Q8VQB5

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	Actin, alpha skeletal muscle × 8 （P68139） ADENOSINE-5'-DIPHOSPHATE × 8 PHOSPHATE ION × 8 MAGNESIUM ION × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SIPA_SALEN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain K； PDBConstruct 1–173； UniProt 497–669 Author chain L； PDBConstruct 1–173； UniProt 497–669 Author chain M； PDBConstruct 1–173； UniProt 497–669 Author chain N； PDBConstruct 1–173； UniProt 497–669

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	8c4c
Deposition date deposition_date	2023-01-03
Last revision last_revision	2024-01-17
Structure title title	F-actin decorated by SipA497-669
Keywords keywords	Salmonella invasion, CELL INVASION; CELL INVASION
Experimental Method method	ELECTRON MICROSCOPY

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

8c4c__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

8c4c__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

8c4c__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	66.05 Å
Rg (electron density)	67.93 Å
Total Rg	67.65 Å
Atom count	56260
Residues	3576
Excluded volume	503630 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`8c4c__assembly_1__model_1`	12-meric （12）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Description description	Actin, alpha skeletal muscle
Molecular weight formula_weight	42110.0 kDa
EC 编号 ec_number	3.6.4.-
Source method src_method	nat
Copy count entity_count	8

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F,G,H
Atom count atom_count	56260

MCDEDETTALVCDNGSGLVKAGFAGDDAPRAVFPSIVGRPRHQGVMVGMGQKDSYVGDEAQSKRGILTLKYPIEHGIITNWDDMEKIWHHTFYNELRVAPEEHPTLLTEAPLNPKANREKMTQIMFETFNVPAMYVAIQAVLSLYASGRTTGIVLDSGDGVTHNVPIYEGYALPHAIMRLDLAGRDLTDYLMKILTERGYSFVTTAEREIVRDIKEKLCYVALDFENEMATAASSSSLEKSYELPDGQVITIGNERFRCPETLFQPSFIGMESAGIHETTYNSIMKCDIDIRKDLYANNVMSGGTTMYPGIADRMQKEITALAPSTMKIKIIAPPERKYSVWIGGSILASLSTFQQMWITKQEYDEAGPSIVHRKCF

Entity 2 Entity 2 polymer

Description description	Cell invasion protein SipA
Molecular weight formula_weight	19143.6 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K,L,M,N

NKAGTTDNDNSQTDKTGPFSGLKFKQNSFLSTVPSVTNMHSMHFDARETFLGVIRKALEPDTSTPFPVRRAFDGLRAEILPNDTIKSAALKAQCSDIDKHPELKAKMETLKEVITHHPQKEKLAEIALQFAREAGLTRLKGETDYVLSNVLDGLIGDGSWRAGPAYESYLNKP

Source Source

Source organism organism	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
NCBI taxonomy ID ncbi_taxonomy_id	99287
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 3 Entity 3 non-polymer

Description description	ADENOSINE-5'-DIPHOSPHATE
Molecular weight formula_weight	427.2 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 4 Entity 4 non-polymer

Description description	PHOSPHATE ION
Molecular weight formula_weight	95.0 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 5 Entity 5 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	8

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Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	—

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	triclinic

Resolution resolution	2.70 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	130720

F-actin decorated by SipA497-669

1. Protein Identity and Related Structures Protein Identity & Related Structures

Actin, alpha skeletal muscle

State in the Current Structure

Other States of the Same Protein in the Database

Cell invasion protein SipA

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

8c4c__assembly_1__model_1

8c4c__assembly_1__model_1 | I(q)

8c4c__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

7. Citations (1)

F-actin decorated by SipA497-669

1. Protein Identity and Related Structures Protein Identity & Related Structures

Actin, alpha skeletal muscle

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Cell invasion protein SipA

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

8c4c__assembly_1__model_1

8c4c__assembly_1__model_1 | I(q)

8c4c__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

7. Citations (1)