SAXSdb — 4a2x

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

RETINOIC ACID INDUCIBLE PROTEIN I

ANAS PLATYRHYNCHOS

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Homooligomer	Protein 2 RNA 2	5'-R(GPGPGPAPGPAPAPCPAPAPCPGPCPGP)-3' × 1 5'-R(CPGPCPGPUPUPGPUPUPCPUPCPCPCP)-3' × 1 ZINC ION × 2	Consistent with all polymers
2	Protein–RNA	Homooligomer	Protein 2 RNA 2	5'-R(GPGPGPAPGPAPAPCPAPAPCPGPCPGP)-3' × 1 5'-R(CPGPCPGPUPUPGPUPUPCPUPCPCPCP)-3' × 1 ZINC ION × 2	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	D3TI84_ANAPL
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 4–131； UniProt 806–933 Author chain B； PDBConstruct 4–131； UniProt 806–933 Author chain C； PDBConstruct 4–131； UniProt 806–933 Author chain D； PDBConstruct 4–131； UniProt 806–933

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	4a2x
Deposition date deposition_date	2011-09-29
Structure title title	Structure of duck RIG-I C-terminal domain (CTD) with 14-mer dSRNA
Keywords keywords	RNA BINDING PROTEIN-RNA COMPLEX, SUPERFAMILY 2 RNA HELICASE, ATP AND DSRNA BINDING, ANTIVIRAL SIGNALLING PATHWAY; RNA BINDING PROTEIN/RNA
Experimental Method method	X-RAY DIFFRACTION

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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.

4a2x__assembly_1__model_1

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

Download this curve (.dat)

4a2x__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4a2x__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	24.60 Å
Rg (electron density)	25.46 Å
Total Rg	25.84 Å
Atom count	2575
Residues	268
Excluded volume	43947 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4a2x__assembly_1__model_1`	tetrameric （4）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4a2x__assembly_2__model_1`	tetrameric （4）	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 (4)

Entity 1 Entity 1 polymer

Description description	RETINOIC ACID INDUCIBLE PROTEIN I
Molecular weight formula_weight	15181.5 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	5150

GAMGQKNLLCGKCKAYACSTDDIRIIKDSHHIVLGEAFKERYTTKPHKKPMQFDGFEKKSKMYCRNNNCQHDWGITVKYLTFDNLPVIKIKSFVMESTATGTQMDFQKWKSINSSLKNFDVEEMSNLYPPF

Source Source

Source organism organism	ANAS PLATYRHYNCHOS
Common name common_name	MALLARD DUCK
NCBI taxonomy ID ncbi_taxonomy_id	8839
Host organism host_organism	ESCHERICHIA COLI

Entity 2 Entity 2 polymer

Description description	5'-R(GPGPGPAPGPAPAPCPAPAPCPGPCPGP)-3'
Molecular weight formula_weight	4587.9 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	L,N

GGGAGAACAACGCG

Entity 3 Entity 3 polymer

Description description	5'-R(CPGPCPGPUPUPGPUPUPCPUPCPCPCP)-3'
Molecular weight formula_weight	4352.6 kDa
Source method src_method	syn
Copy count entity_count	2

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	M,O

CGCGUUGUUCUCCC

Entity 4 Entity 4 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	4

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	4a2xA00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	30 — RIG-I-like receptor, C-terminal regulatory domain

Domain ID domain_id	4a2xB00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	30 — RIG-I-like receptor, C-terminal regulatory domain

Domain ID domain_id	4a2xC00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	30 — RIG-I-like receptor, C-terminal regulatory domain

Domain ID domain_id	4a2xD00
Class class	2 — Mainly Beta
Architecture architecture	170 — Beta Complex
Topology topology	150 — Metal Binding Protein, Guanine Nucleotide Exchange Factor; Chain A
Homologous superfamily homologous superfamily	30 — RIG-I-like receptor, C-terminal regulatory domain

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Unit-cell length a length_a	216.020 Å
Unit-cell length b length_b	90.640 Å
Unit-cell length c length_c	62.960 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.38 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	16

Space group space_group	C 1 2 1
Space-group number int_tables_number	5
Crystal system crystal_system	—

Resolution resolution	4.000 Å
Low-resolution limit resolution_low	108.010 Å
R factor r_factor	0.2060
R_work r_work	0.2039
R_free r_free	0.2481

Structure of duck RIG-I C-terminal domain (CTD) with 14-mer dSRNA

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

RETINOIC ACID INDUCIBLE PROTEIN I

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

4a2x__assembly_1__model_1

4a2x__assembly_1__model_1 | I(q)

4a2x__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 non-polymer

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)

Structure of duck RIG-I C-terminal domain (CTD) with 14-mer dSRNA

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

RETINOIC ACID INDUCIBLE PROTEIN I

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

4a2x__assembly_1__model_1

4a2x__assembly_1__model_1 | I(q)

4a2x__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 polymer

Polymer Polymer

Entity 4 Entity 4 non-polymer

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (1)