6nqb

Role of Era in Assembly and Homeostasis of the Ribosomal Small Subunit

Method: ELECTRON MICROSCOPY

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

30S ribosomal protein S3

Escherichia coli

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A376HTV6_ECOLX
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain C； PDBConstruct 1–206； UniProt 2–207

30S ribosomal protein S10

Escherichia coli

UniProt D7X302

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	D7X302_ECOLX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain J； PDBConstruct 1–98； UniProt 5–102

30S ribosomal protein S14

Escherichia coli

UniProt A0A090BZT4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A090BZT4_ECOLX
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain N； PDBConstruct 1–99； UniProt 2–101

30S ribosomal protein S19

Escherichia coli H736

UniProt F4SQ43

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	F4SQ43_ECOLX
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain S； PDBConstruct 1–74； UniProt 8–81

30S ribosomal protein S4

Escherichia coli

UniProt L3PZ69

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	L3PZ69_ECOLX
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain D； PDBConstruct 1–205； UniProt 2–206

30S ribosomal protein S5

Escherichia coli

UniProt A1AGJ2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A1AGJ2_ECOLX
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain E； PDBConstruct 1–149； UniProt 10–158

30S ribosomal protein S6

Escherichia coli

UniProt A0A074QGH8

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A074QGH8_ECOLX
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain F； PDBConstruct 1–93； UniProt 1–93

30S ribosomal protein S8

Escherichia coli

UniProt D8A1L7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	D8A1L7_ECOMS
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain H； PDBConstruct 1–129； UniProt 2–130

30S ribosomal protein S12

Escherichia coli

UniProt V6FZ95

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	V6FZ95_ECOLX
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain L； PDBConstruct 1–123； UniProt 2–124

30S ribosomal protein S15

Escherichia coli

UniProt Q8X9M2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RS15_ECO57
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain O； PDBConstruct 1–86； UniProt 3–88

30S RIBOSOMAL PROTEIN bS16

Escherichia coli

UniProt S0UHH0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	S0UHH0_9ESCH
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain P； PDBConstruct 1–79； UniProt 1–79

30S ribosomal protein S17

Escherichia coli

UniProt A0A0G3QJD8

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A0G3QJD8_9GAMM
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain Q； PDBConstruct 1–79； UniProt 4–82

30S ribosomal protein S18

Escherichia coli

UniProt D7ZI16

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S20 × 1 （T6N332） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	D7ZI16_ECOLX
Isoform	—
PDB entities	14
Chains and sequence ranges	Author chain R； PDBConstruct 1–52； UniProt 23–74

30S ribosomal protein S20

Escherichia coli

UniProt T6N332

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S2 × 1 （U9ZNW8） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	T6N332_ECOLX
Isoform	—
PDB entities	15
Chains and sequence ranges	Author chain T； PDBConstruct 1–85； UniProt 3–87

30S ribosomal protein S2

Escherichia coli

UniProt U9ZNW8

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 15 RNA 1	30S ribosomal protein S3 × 1 （A0A376HTV6） 30S ribosomal protein S10 × 1 （D7X302） 30S ribosomal protein S14 × 1 （A0A090BZT4） 30S ribosomal protein S19 × 1 （F4SQ43） 16S RIBOSOMAL RNA × 1 30S ribosomal protein S4 × 1 （L3PZ69） 30S ribosomal protein S5 × 1 （A1AGJ2） 30S ribosomal protein S6 × 1 （A0A074QGH8） 30S ribosomal protein S8 × 1 （D8A1L7） 30S ribosomal protein S12 × 1 （V6FZ95） 30S ribosomal protein S15 × 1 （Q8X9M2） 30S RIBOSOMAL PROTEIN bS16 × 1 （S0UHH0） 30S ribosomal protein S17 × 1 （A0A0G3QJD8） 30S ribosomal protein S18 × 1 （D7ZI16） 30S ribosomal protein S20 × 1 （T6N332） MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	U9ZNW8_ECOLX
Isoform	—
PDB entities	16
Chains and sequence ranges	Author chain B； PDBConstruct 1–217； UniProt 10–226

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	6nqb
Deposition date deposition_date	2019-01-20
Structure title title	Role of Era in Assembly and Homeostasis of the Ribosomal Small Subunit
Keywords keywords	Ribosome assembly, 30S subunit, YjeQ protein, Era protein; cryo-electron microscopy, RIBOSOME; RIBOSOME
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.

6nqb__assembly_1__model_1

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

Download this curve (.dat)

6nqb__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6nqb__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	67.66 Å
Rg (electron density)	67.29 Å
Total Rg	67.38 Å
Atom count	42570
Residues	3093
Excluded volume	652480 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6nqb__assembly_1__model_1`	hexadecameric （16）	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 (17)

Entity 1 Entity 1 polymer

Description description	30S ribosomal protein S3
Molecular weight formula_weight	23078.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C
Atom count atom_count	42570

GQKVHPNGIRLGIVKPWNSTWFANTKEFADNLDSDFKVRQYLTKELAKASVSRIVIERPAKSIRVTIHTARPGIVIGKKGEDVEKLRKVVADIAGVPAQINIAEVRKPELDAKLVADSITSQLERRVMFRRAMKRAVQNAMRLGAKGIKVEVSGRLGGAEIARTEWYREGRVPLHTLRADIDYNTSEAHTTYGVIGVKVWIFKGEI

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	30S ribosomal protein S10
Molecular weight formula_weight	11197.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J

RIRIRLKAFDHRLIDQATAEIVETAKRTGAQVRGPIPLPTRKERFTVLISPHVNKDARDQYEIRTHLRLVDIVEPTEKTVDALMRLDLAAGVDVQISL

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 polymer

Description description	30S ribosomal protein S14
Molecular weight formula_weight	11360.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	N

AKQSMKAREVKRVALADKYFAKRAELKAIISDVNASDERWNAVLKLQTLPRDSSPSRQRNRCRQTGRPHGFLRKFGLSRIKVREAAMRGEIPGLKKASW

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 4 Entity 4 polymer

Description description	30S ribosomal protein S19
Molecular weight formula_weight	8441.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	S

GPFIDLHLLKKVEKAVESGDKKPLRTWSRRSTIFPNMIGLTIAVHNGRQHVPVFVTDEMVGHKLGEFAPTRTYR

Source Source

Source organism organism	Escherichia coli H736
NCBI taxonomy ID ncbi_taxonomy_id	656414
Host organism host_organism	Escherichia coli

Entity 5 Entity 5 polymer

Description description	16S RIBOSOMAL RNA
Molecular weight formula_weight	499690.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	A

AAAUUGAAGAGUUUGAUCAUGGCUCAGAUUGAACGCUGGCGGCAGGCCUAACACAUGCAAGUCGAACGGUAACAGGAAGAAGCUUGCUUCUUUGCUGACGAGUGGCGGACGGGUGAGUAAUGUCUGGGAAACUGCCUGAUGGAGGGGGAUAACUACUGGAAACGGUAGCUAAUACCGCAUAACGUCGCAAGACCAAAGAGGGGGACCUUCGGGCCUCUUGCCAUCGGAUGUGCCCAGAUGGGAUUAGCUAGUAGGUGGGGUAACGGCUCACCUAGGCGACGAUCCCUAGCUGGUCUGAGAGGAUGACCAGCCACACUGGAACUGAGACACGGUCCAGACUCCUACGGGAGGCAGCAGUGGGGAAUAUUGCACAAUGGGCGCAAGCCUGAUGCAGCCAUGCCGCGUGUAUGAAGAAGGCCUUCGGGUUGUAAAGUACUUUCAGCGGGGAGGAAGGGAGUAAAGUUAAUACCUUUGCUCAUUGACGUUACCCGCAGAAGAAGCACCGGCUAACUCCGUGCCAGCAGCCGCGGUAAUACGGAGGGUGCAAGCGUUAAUCGGAAUUACUGGGCGUAAAGCGCACGCAGGCGGUUUGUUAAGUCAGAUGUGAAAUCCCCGGGCUCAACCUGGGAACUGCAUCUGAUACUGGCAAGCUUGAGUCUCGUAGAGGGGGGUAGAAUUCCAGGUGUAGCGGUGAAAUGCGUAGAGAUCUGGAGGAAUACCGGUGGCGAAGGCGGCCCCCUGGACGAAGACUGACGCUCAGGUGCGAAAGCGUGGGGAGCAAACAGGAUUAGAUACCCUGGUAGUCCACGCCGUAAACGAUGUCGACUUGGAGGUUGUGCCCUUGAGGCGUGGCUUCCGGAGCUAACGCGUUAAGUCGACCGCCUGGGGAGUACGGCCGCAAGGUUAAAACUCAAAUGAAUUGACGGGGGCCCGCACAAGCGGUGGAGCAUGUGGUUUAAUUCGAUGCAACGCGAAGAACCUUACCUGGUCUUGACAUCCACGGAAGUUUUCAGAGAUGAGAAUGUGCCUUCGGGAACCGUGAGACAGGUGCUGCAUGGCUGUCGUCAGCUCGUGUUGUGAAAUGUUGGGUUAAGUCCCGCAACGAGCGCAACCCUUAUCCUUUGUUGCCAGCGGUCCGGCCGGGAACUCAAAGGAGACUGCCAGUGAUAAACUGGAGGAAGGUGGGGAUGACGUCAAGUCAUCAUGGCCCUUACGACCAGGGCUACACACGUGCUACAAUGGCGCAUACAAAGAGAAGCGACCUCGCGAGAGCAAGCGGACCUCAUAAAGUGCGUCGUAGUCCGGAUUGGAGUCUGCAACUCGACUCCAUGAAGUCGGAAUCGCUAGUAAUCGUGGAUCAGAAUGCCACGGUGAAUACGUUCCCGGGCCUUGUACACACCGCCCGUCACACCAUGGGAGUGGGUUGCAAAAGAAGUAGGUAGCUUAACCUUCGGGAGGGCGCUUACCACUUUGUGAUUCAUGACUGGGGUGAAGUCGUAACAAGGUAACCGUAGGGGAACCUGCGGUUGGAUCACCUCCUUA

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 6 Entity 6 polymer

Description description	30S ribosomal protein S4
Molecular weight formula_weight	23383.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

ARYLGPKLKLSRREGTDLFLKSGVRAIDTKCKIEQAPGQHGARKPRLSDYGVQLREKQKVRRIYGVLERQFRNYYKEAARLKGNTGENLLALLEGRLDNVVYRMGFGATRAEARQLVSHKAIMVNGRVVNIASYQVSPNDVVSIREKAKKQSRVKAALELAEQREKPTWLEVDAGKMEGTFKRKPERSDLSADINEHLIVELYSK

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 7 Entity 7 polymer

Description description	30S ribosomal protein S5
Molecular weight formula_weight	15675.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

ELQEKLIAVNRVSKTVKGGRIFSFTALTVVGDGNGRVGFGYGKAREVPAAIQKAMEKARRNMINVALNNGTLQHPVKGVHTGSRVFMQPASEGTGIIAGGAMRAVLEVAGVHNVLAKAYGSTNPINVVRATIDGLENMNSPEMVAAKRG

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 8 Entity 8 polymer

Description description	30S ribosomal protein S6
Molecular weight formula_weight	10972.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

MRHYEIVFMVHPDQSEQVPGMIERYTAAITGAEGKIHRLEDWGRRQLAYPINKLHKAHYVLMNVEAPQEVIDELETTFRFNDAVIRSMVMRTK

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 9 Entity 9 polymer

Description description	30S ribosomal protein S8
Molecular weight formula_weight	14015.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

SMQDPIADMLTRIRNGQAANKAAVTMPSSKLKVAIANVLKEEGFIEDFKVEGDTKPELELTLKYFQGKAVVESIQRVSRPGLRIYKRKDELPKVMAGLGIAVVSTSKGVMTDRAARQAGLGGEIICYVA

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 10 Entity 10 polymer

Description description	30S ribosomal protein S12
Molecular weight formula_weight	13637.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L

ATVNQLVRKPRARKVAKSNVPALEACPQKRGVCTRVYTTTPKKPNSALRKVCRVRLTNGFEVTSYIGGEGHNLQEHSVILIRGGRVKDLPGVRYHTVRGALDCSGVKDRKQARSKYGVKRPKA

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 11 Entity 11 polymer

Description description	30S ribosomal protein S15
Molecular weight formula_weight	9944.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	O

LSTEATAKIVSEFGRDANDTGSTEVQVALLTAQINHLQGHFAEHKKDHHSRRGLLRMVSQRRKLLDYLKRKDVARYTRLIERLGLR

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 12 Entity 12 polymer

Description description	30S RIBOSOMAL PROTEIN bS16
Molecular weight formula_weight	8936.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	P

MVTIRLARHGAKKRPFYQVVVADSRNARNGRFIERVGFFNPIASEKEEGTRLDLDRIAHWVGQGATISDRVAALIKEVN

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 13 Entity 13 polymer

Description description	30S ribosomal protein S17
Molecular weight formula_weight	9164.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Q

KIRTLQGRVVSDKMEKSIVVAIERFVKHPIYGKFIKRTTKLHVHDENNECGIGDVVEIRECRPLSKTKSWTLVRVVEKA

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 14 Entity 14 polymer

Description description	30S ribosomal protein S18
Molecular weight formula_weight	6109.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	R

YKDIATLKNYITESGKIVPSRITGTRAKYQRQLARAIKRARYLSLLPYTDRH

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 15 Entity 15 polymer

Description description	30S ribosomal protein S20
Molecular weight formula_weight	9506.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	T

NIKSAKKRAIQSEKARKHNASRRSMMRTFIKKVYAAIEAGDKAAAQKAFNEMQPIVDRQAAKGLIHKNKAARHKANLTAQINKLA

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 16 Entity 16 polymer

Description description	30S ribosomal protein S2
Molecular weight formula_weight	24122.8 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

LKAGVHFGHQTRYWNPKMKPFIFGARNKVHIINLEKTVPMFNEALAELNKIASRKGKILFVGTKRAASEAVKDAALSCDQFFVNHRWLGGMLTNWKTVRQSIKRLKDLETQSQDGTFDKLTKKEALMRTRELEKLENSLGGIKDMGGLPDALFVIDADHEHIAIKEANNLGIPVFAIVDTNSDPDGVDFVIPGNDDAIRAVTLYLGAVAATVREGRS

Source Source

Source organism organism	Escherichia coli
NCBI taxonomy ID ncbi_taxonomy_id	562
Host organism host_organism	Escherichia coli

Entity 17 Entity 17 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

▼

6. Fold Classification (SCOP + CATH) 17 domains

CATH v4.4 (17 domains)

Domain ID domain_id	6nqbB01
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	10490 — Glucose-6-phosphate isomerase like protein; domain 1

Domain ID domain_id	6nqbB02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	610 — Helix hairpin bin

Domain ID domain_id	6nqbC01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	300 — GMP Synthetase; Chain A, domain 3
Homologous superfamily homologous superfamily	20 — K homology (KH) domain

Domain ID domain_id	6nqbC02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1140 — Ribosomal protein S3 C-terminal domain
Homologous superfamily homologous superfamily	32 — Ribosomal protein S3, C-terminal domain

Domain ID domain_id	6nqbE01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	160 — Double Stranded RNA Binding Domain
Homologous superfamily homologous superfamily	20 —

Domain ID domain_id	6nqbE02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	230 — Ribosomal Protein S5; domain 2
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	6nqbF00
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	6nqbH01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1370 — Ribosomal Protein S8; Chain: A, domain 1
Homologous superfamily homologous superfamily	30 —

Domain ID domain_id	6nqbH02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1490 — Dna Ligase; domain 1
Homologous superfamily homologous superfamily	10 —

Domain ID domain_id	6nqbJ00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	70 — Alpha-Beta Plaits
Homologous superfamily homologous superfamily	600 — Ribosomal protein S10

Domain ID domain_id	6nqbL00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	6nqbN01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	1480 —

Domain ID domain_id	6nqbP00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	1320 — S16 Ribosomal Protein; Chain: A;
Homologous superfamily homologous superfamily	10 — Ribosomal protein S16

Domain ID domain_id	6nqbQ00
Class class	2 — Mainly Beta
Architecture architecture	40 — Beta Barrel
Topology topology	50 — OB fold (Dihydrolipoamide Acetyltransferase, E2P)
Homologous superfamily homologous superfamily	140 — Nucleic acid-binding proteins

Domain ID domain_id	6nqbR00
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	640 — 30s Ribosomal Protein S18
Homologous superfamily homologous superfamily	10 — Ribosomal protein S18

Domain ID domain_id	6nqbS00
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	860 — 30s Ribosomal Protein S19; Chain A
Homologous superfamily homologous superfamily	10 — Ribosomal protein S19/S15

Domain ID domain_id	6nqbT00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	58 — Methane Monooxygenase Hydroxylase; Chain G, domain 1
Homologous superfamily homologous superfamily	110 — Ribosomal protein S20

▶

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	1

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

Resolution resolution	3.80 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	423567

Role of Era in Assembly and Homeostasis of the Ribosomal Small Subunit

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

30S ribosomal protein S3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S10

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S14

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S19

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S5

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

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

30S ribosomal protein S8

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S12

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S15

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer