7b8v

Circular permutant of ribosomal protein S6, P54-55

Method: X-RAY DIFFRACTION

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

30S ribosomal protein S6

Thermus thermophilus HB27

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 6	water × 5	Consistent with protein count
2	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count
3	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count
4	Protein homooligomer	Homooligomer	Protein 6	water × 6	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RS6_THET2
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–37； UniProt 55–91 Author chain A； PDBConstruct 44–95； UniProt 3–54 Author chain B； PDBConstruct 1–37； UniProt 55–91 Author chain B； PDBConstruct 44–95； UniProt 3–54 Author chain C； PDBConstruct 1–37； UniProt 55–91 Author chain C； PDBConstruct 44–95； UniProt 3–54 Author chain D； PDBConstruct 1–37； UniProt 55–91 Author chain D； PDBConstruct 44–95； UniProt 3–54 Author chain E； PDBConstruct 1–37； UniProt 55–91 Author chain E； PDBConstruct 44–95； UniProt 3–54 Author chain F； PDBConstruct 1–37； UniProt 55–91 Author chain F； PDBConstruct 44–95； UniProt 3–54 Author chain G； PDBConstruct 1–37； UniProt 55–91 Author chain G； PDBConstruct 44–95； UniProt 3–54 Author chain H； PDBConstruct 1–37； UniProt 55–91 Author chain H； PDBConstruct 44–95； UniProt 3–54 Author chain I； PDBConstruct 1–37； UniProt 55–91 Author chain I； PDBConstruct 44–95； UniProt 3–54 Author chain J； PDBConstruct 1–37； UniProt 55–91 Author chain J； PDBConstruct 44–95； UniProt 3–54 Author chain K； PDBConstruct 1–37； UniProt 55–91 Author chain K； PDBConstruct 44–95； UniProt 3–54 Author chain L； PDBConstruct 1–37； UniProt 55–91 Author chain L； PDBConstruct 44–95； UniProt 3–54 Author chain M； PDBConstruct 1–37； UniProt 55–91 Author chain M； PDBConstruct 44–95； UniProt 3–54 Author chain N； PDBConstruct 1–37； UniProt 55–91 Author chain N； PDBConstruct 44–95； UniProt 3–54 Author chain O； PDBConstruct 1–37； UniProt 55–91 Author chain O； PDBConstruct 44–95； UniProt 3–54 Author chain P； PDBConstruct 1–37； UniProt 55–91 Author chain P； PDBConstruct 44–95； UniProt 3–54 Author chain Q； PDBConstruct 1–37； UniProt 55–91 Author chain Q； PDBConstruct 44–95； UniProt 3–54 Author chain R； PDBConstruct 1–37； UniProt 55–91 Author chain R； PDBConstruct 44–95； UniProt 3–54 Author chain S； PDBConstruct 1–37； UniProt 55–91 Author chain S； PDBConstruct 44–95； UniProt 3–54 Author chain T； PDBConstruct 1–37； UniProt 55–91 Author chain T； PDBConstruct 44–95； UniProt 3–54 Author chain U； PDBConstruct 1–37； UniProt 55–91 Author chain U； PDBConstruct 44–95； UniProt 3–54 Author chain V； PDBConstruct 1–37； UniProt 55–91 Author chain V； PDBConstruct 44–95； UniProt 3–54 Author chain W； PDBConstruct 1–37； UniProt 55–91 Author chain W； PDBConstruct 44–95； UniProt 3–54 Author chain X； PDBConstruct 1–37； UniProt 55–91 Author chain X； PDBConstruct 44–95； UniProt 3–54

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	7b8v
Deposition date deposition_date	2020-12-13
Structure title title	Circular permutant of ribosomal protein S6, P54-55
Keywords keywords	Circular permutant, native stacking, , designed amyloid fibril, RIBOSOMAL PROTEIN; RIBOSOMAL PROTEIN
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.

7b8v__assembly_1__model_1

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

Download this curve (.dat)

7b8v__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7b8v__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.61 Å
Rg (electron density)	36.16 Å
Total Rg	36.15 Å
Atom count	4212
Residues	510
Excluded volume	74636 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7b8v__assembly_1__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`7b8v__assembly_2__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`7b8v__assembly_3__model_1`	hexameric （6）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`7b8v__assembly_4__model_1`	hexameric （6）	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 (2)

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6. Fold Classification (SCOP + CATH) 24 domains

CATH v4.4 (24 domains)

Domain ID domain_id	7b8vA01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vB01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vD01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vF01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vG01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vH01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vI01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vJ01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vK01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vL01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vM01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vN01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vO01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vP01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vQ01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vR01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vS01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vT01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vU01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vV01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vW01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

Domain ID domain_id	7b8vX01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	60 — Ribosomal protein S6/Translation elongation factor EF1B

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Unit-cell length a length_a	73.450 Å
Unit-cell length b length_b	73.630 Å
Unit-cell length c length_c	131.008 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	24

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

Resolution resolution	1.863 Å
Low-resolution limit resolution_low	48.940 Å
R factor r_factor	0.2487
R_work r_work	0.2468
R_free r_free	0.2862

Description description	30S ribosomal protein S6
Molecular weight formula_weight	11127.7 kDa
Source method src_method	man
Copy count entity_count	24

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,S,T,W,X,U,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,V
Atom count atom_count	16947

Circular permutant of ribosomal protein S6, P54-55

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

30S ribosomal protein S6

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

7b8v__assembly_1__model_1

7b8v__assembly_1__model_1 | I(q)

7b8v__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 24 domains

CATH v4.4 (24 domains)

7. Citations (1)

Source organism organism	Thermus thermophilus HB27
NCBI taxonomy ID ncbi_taxonomy_id	262724
Host organism host_organism	Escherichia coli BL21

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	99

Circular permutant of ribosomal protein S6, P54-55

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

30S ribosomal protein S6

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

7b8v__assembly_1__model_1

7b8v__assembly_1__model_1 | I(q)

7b8v__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 water

6. Fold Classification (SCOP + CATH) 24 domains

CATH v4.4 (24 domains)

7. Citations (1)