7afo

Bacterial 30S ribosomal subunit assembly complex state B (body domain)

Method: ELECTRON MICROSCOPY

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

30S ribosomal protein S4

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SR62_ECOLX
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain D； PDBConstruct 1–206； UniProt 1–206

30S ribosomal protein S5

OrganismNot specified

UniProt C3SR27

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SR27_ECOLX
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain E； PDBConstruct 1–167； UniProt 1–167

30S ribosomal protein S6

OrganismNot specified

UniProt P02358

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RS6_ECOLI
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain F； PDBConstruct 1–135； UniProt 1–135

30S ribosomal protein S8

OrganismNot specified

UniProt C3SR12

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SR12_ECOLX
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain H； PDBConstruct 1–130； UniProt 1–130

30S ribosomal protein S11

OrganismNot specified

UniProt C3SR57

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SR57_ECOLX
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain K； PDBConstruct 1–129； UniProt 1–129

30S ribosomal protein S12

OrganismNot specified

UniProt C3SQR7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SQR7_ECOLX
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain L； PDBConstruct 1–124； UniProt 1–124

30S ribosomal protein S15

OrganismNot specified

UniProt C3SSQ7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SSQ7_ECOLX
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain O； PDBConstruct 1–89； UniProt 1–89

30S ribosomal protein S16

OrganismNot specified

UniProt C3SYP2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SYP2_ECOLX
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain P； PDBConstruct 1–82； UniProt 1–82

30S ribosomal protein S17

OrganismNot specified

UniProt C3SQY7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SQY7_ECOLX
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain Q； PDBConstruct 1–84； UniProt 1–84

30S ribosomal protein S18

OrganismNot specified

UniProt C3SFP7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3SFP7_ECOLX
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain R； PDBConstruct 1–75； UniProt 1–75

30S ribosomal protein S20

OrganismNot specified

UniProt C3TRH7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3TRH7_ECOLX
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain T； PDBConstruct 1–87； UniProt 1–87

30S ribosomal protein S21

OrganismNot specified

UniProt C3STZ7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3STZ7_ECOLX
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain U； PDBConstruct 1–71； UniProt 1–71

Ribosome maturation factor RimP

Escherichia coli

UniProt A0A0J3VRH1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosomal RNA small subunit methyltransferase A × 1 （I4T5U1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A0J3VRH1_ECOLX
Isoform	—
PDB entities	14
Chains and sequence ranges	Author chain X； PDBConstruct 1–150； UniProt 1–150

Ribosomal RNA small subunit methyltransferase A

Escherichia coli

UniProt I4T5U1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–RNA	Heteromer	Protein 14 RNA 1	16SrRNA (body domain of the 30S ribosome) × 1 30S ribosomal protein S4 × 1 （C3SR62） 30S ribosomal protein S5 × 1 （C3SR27） 30S ribosomal protein S6 × 1 （P02358） 30S ribosomal protein S8 × 1 （C3SR12） 30S ribosomal protein S11 × 1 （C3SR57） 30S ribosomal protein S12 × 1 （C3SQR7） 30S ribosomal protein S15 × 1 （C3SSQ7） 30S ribosomal protein S16 × 1 （C3SYP2） 30S ribosomal protein S17 × 1 （C3SQY7） 30S ribosomal protein S18 × 1 （C3SFP7） 30S ribosomal protein S20 × 1 （C3TRH7） 30S ribosomal protein S21 × 1 （C3STZ7） Ribosome maturation factor RimP × 1 （A0A0J3VRH1） MAGNESIUM ION × 20	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	I4T5U1_ECOLX
Isoform	—
PDB entities	15
Chains and sequence ranges	Author chain Y； PDBConstruct 1–273； UniProt 1–273

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	7afo
Deposition date deposition_date	2020-09-19
Structure title title	Bacterial 30S ribosomal subunit assembly complex state B (body domain)
Keywords keywords	Cryo-EM, 30S biogenesis, ribosome assembly, RbfA, RsgA, YjeQ, RimP, KsgA, RsmA, 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.

7afo__assembly_1__model_1

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

Download this curve (.dat)

7afo__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7afo__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	56.05 Å
Rg (electron density)	56.49 Å
Total Rg	56.54 Å
Atom count	34134
Residues	2658
Excluded volume	530970 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7afo__assembly_1__model_1`	pentadecameric （15）	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 (16)

Entity 1 Entity 1 polymer

Description description	16SrRNA (body domain of the 30S ribosome)
Molecular weight formula_weight	499513.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	A
Atom count atom_count	34134

AAAUUGAAGAGUUUGAUCAUGGCUCAGAUUGAACGCUGGCGGCAGGCCUAACACAUGCAAGUCGAACGGUAACAGGAAGAAGCUUGCUUCUUUGCUGACGAGUGGCGGACGGGUGAGUAAUGUCUGGGAAACUGCCUGAUGGAGGGGGAUAACUACUGGAAACGGUAGCUAAUACCGCAUAACGUCGCAAGACCAAAGAGGGGGACCUUCGGGCCUCUUGCCAUCGGAUGUGCCCAGAUGGGAUUAGCUAGUAGGUGGGGUAACGGCUCACCUAGGCGACGAUCCCUAGCUGGUCUGAGAGGAUGACCAGCCACACUGGAACUGAGACACGGUCCAGACUCCUACGGGAGGCAGCAGUGGGGAAUAUUGCACAAUGGGCGCAAGCCUGAUGCAGCCAUGCCGCGUGUAUGAAGAAGGCCUUCGGGUUGUAAAGUACUUUCAGCGGGGAGGAAGGGAGUAAAGUUAAUACCUUUGCUCAUUGACGUUACCCGCAGAAGAAGCACCGGCUAACUCCGUGCCAGCAGCCGCGGUAAUACGGAGGGUGCAAGCGUUAAUCGGAAUUACUGGGCGUAAAGCGCACGCAGGCGGUUUGUUAAGUCAGAUGUGAAAUCCCCGGGCUCAACCUGGGAACUGCAUCUGAUACUGGCAAGCUUGAGUCUCGUAGAGGGGGGUAGAAUUCCAGGUGUAGCGGUGAAAUGCGUAGAGAUCUGGAGGAAUACCGGUGGCGAAGGCGGCCCCCUGGACGAAGACUGACGCUCAGGUGCGAAAGCGUGGGGAGCAAACAGGAUUAGAUACCCUGGUAGUCCACGCCGUAAACGAUGUCGACUUGGAGGUUGUGCCCUUGAGGCGUGGCUUCCGGAGCUAACGCGUUAAGUCGACCGCCUGGGGAGUACGGCCGCAAGGUUAAAACUCAAAUGAAUUGACGGGGGCCCGCACAAGCGGUGGAGCAUGUGGUUUAAUUCGAUGCAACGCGAAGAACCUUACCUGGUCUUGACAUCCACGGAAGUUUUCAGAGAUGAGAAUGUGCCUUCGGGAACCGUGAGACAGGUGCUGCAUGGCUGUCGUCAGCUCGUGUUGUGAAAUGUUGGGUUAAGUCCCGCAACGAGCGCAACCCUUAUCCUUUGUUGCCAGCGGUCCGGCCGGGAACUCAAAGGAGACUGCCAGUGAUAAACUGGAGGAAGGUGGGGAUGACGUCAAGUCAUCAUGGCCCUUACGACCAGGGCUACACACGUGCUACAAUGGCGCAUACAAAGAGAAGCGACCUCGCGAGAGCAAGCGGACCUCAUAAAGUGCGUCGUAGUCCGGAUUGGAGUCUGCAACUCGACUCCAUGAAGUCGGAAUCGCUAGUAAUCGUGGAUCAGAAUGCCACGGUGAAUACGUUCCCGGCCUUGUACACACCGCCCGUCACACCAUGGGAGUGGGUUGCAAAAGAAGUAGGUAGCUUAACCUUCGGGAGGGCGCUUACCACUUUGUGAUUCAUGACUGGGGUGAAGUCGUAACAAGGUAACCGUAGGGGAACCUGCGGUUGGAUCACCUCCUUA

Entity 2 Entity 2 polymer

Description description	30S ribosomal protein S4
Molecular weight formula_weight	23514.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

MARYLGPKLKLSRREGTDLFLKSGVRAIDTKCKIEQAPGQHGARKPRLSDYGVQLREKQKVRRIYGVLERQFRNYYKEAARLKGNTGENLLALLEGRLDNVVYRMGFGATRAEARQLVSHKAIMVNGRVVNIASYQVSPNDVVSIREKAKKQSRVKAALELAEQREKPTWLEVDAGKMEGTFKRKPERSDLSADINEHLIVELYSK

Entity 3 Entity 3 polymer

Description description	30S ribosomal protein S5
Molecular weight formula_weight	17629.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

MAHIEKQAGELQEKLIAVNRVSKTVKGGRIFSFTALTVVGDGNGRVGFGYGKAREVPAAIQKAMEKARRNMINVALNNGTLQHPVKGVHTGSRVFMQPASEGTGIIAGGAMRAVLEVAGVHNVLAKAYGSTNPINVVRATIDGLENMNSPEMVAAKRGKSVEEILGK

Entity 4 Entity 4 polymer

Description description	30S ribosomal protein S6
Molecular weight formula_weight	15727.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

MRHYEIVFMVHPDQSEQVPGMIERYTAAITGAEGKIHRLEDWGRRQLAYPINKLHKAHYVLMNVEAPQEVIDELETTFRFNDAVIRSMVMRTKHAVTEASPMVKAKDERRERRDDFANETADDAEAGDSEEEEEE

Entity 5 Entity 5 polymer

Description description	30S ribosomal protein S8
Molecular weight formula_weight	14146.6 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

MSMQDPIADMLTRIRNGQAANKAAVTMPSSKLKVAIANVLKEEGFIEDFKVEGDTKPELELTLKYFQGKAVVESIQRVSRPGLRIYKRKDELPKVMAGLGIAVVSTSKGVMTDRAARQAGLGGEIICYVA

Entity 6 Entity 6 polymer

Description description	30S ribosomal protein S11
Molecular weight formula_weight	13871.0 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

MAKAPIRARKRVRKQVSDGVAHIHASFNNTIVTITDRQGNALGWATAGGSGFRGSRKSTPFAAQVAAERCADAVKEYGIKNLEVMVKGPGPGRESTIRALNAAGFRITNITDVTPIPHNGCRPPKKRRV

Entity 7 Entity 7 polymer

Description description	30S ribosomal protein S12
Molecular weight formula_weight	13814.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L

MATVNQLVRKPRARKVAKSNVPALEACPQKRGVCTRVYTTTPKKPNSALRKVCRVRLTNGFEVTSYIGGEGHNLQEHSVILIRGGRVKXLPGVRYHTVRGALDCSGVKDRKQARSKYGVKRPKA

Entity 8 Entity 8 polymer

Description description	30S ribosomal protein S15
Molecular weight formula_weight	10290.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	O

MSLSTEATAKIVSEFGRDANDTGSTEVQVALLTAQINHLQGHFAEHKKDHHSRRGLLRMVSQRRKLLDYLKRKDVARYTQLIERLGLRR

Entity 9 Entity 9 polymer

Description description	30S ribosomal protein S16
Molecular weight formula_weight	9207.6 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	P

MVTIRLARHGAKKRPFYQVVVADSRNARNGRFIERVGFFNPIASEKEEGTRLDLDRIAHWVGQGATISDRVAALIKEVNKAA

Entity 10 Entity 10 polymer

Description description	30S ribosomal protein S17
Molecular weight formula_weight	9724.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Q

MTDKIRTLQGRVVSDKMEKSIVVAIERFVKHPIYGKFIKRTTKLHVHDENNECGIGDVVEIRECRPLSKTKSWTLVRVVEKAVL

Entity 11 Entity 11 polymer

Description description	30S ribosomal protein S18
Molecular weight formula_weight	9005.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	R

MARYFRRRKFCRFTAEGVQEIDYKDIATLKNYITESGKIVPSRITGTRAKYQRQLARAIKRARYLSLLPYTDRHQ

Entity 12 Entity 12 polymer

Description description	30S ribosomal protein S20
Molecular weight formula_weight	9708.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	T

MANIKSAKKRAIQSEKARKHNASRRSMMRTFIKKVYAAIEAGDKAAAQKAFNEMQPIVDRQAAKGLIHKNKAARHKANLTAQINKLA

Entity 13 Entity 13 polymer

Description description	30S ribosomal protein S21
Molecular weight formula_weight	8524.0 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	U

MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKLARENARRTRLY

Entity 14 Entity 14 polymer

Description description	Ribosome maturation factor RimP
Molecular weight formula_weight	16738.0 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	X

MSTLEQKLTEMITAPVEALGFELVGIEFIRGRTSTLRIYIDSEDGINVDDCADVSHQVSAVLDVEDPITVAYNLEVSSPGLDRPLFTAEHYARFVGEEVTLVLRMAVQNRRKWQGVIKAVDGEMITVTVEGKDEVFALSNIQKANLVPHFA

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	Ribosomal RNA small subunit methyltransferase A
Molecular weight formula_weight	30452.1 kDa
EC 编号 ec_number	2.1.1.182
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Y

MNNRVHQGHLARKRFGQNFLNDQFVIDSIVSAINPQKGQAMVEIGPGLAALTEPVGERLDQLTVIELDRDLAARLQTHPFLGPKLTIYQQDAMTFNFGELAEKMGQPLRVFGNLPYNISTPLMFHLFSYTDAIADMHFMLQKEVVNRLVAGPNSKAYGRLSVMAQYYCNVIPVLEVPPSAFTPPPKVDSAVVRLVPHATMPHPVKDVRVLSRITTEAFNQRRKTIRNSLGNLFSVEVLTGMGIDPAMRAENISVAQYCQMANYLAENAPLQES

Source Source

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

Entity 16 Entity 16 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	20

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	7afoD01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1050 — Ribosomal Protein S4 Delta 41; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Ribosomal protein S4/S9, N-terminal domain

Domain ID domain_id	7afoD02
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	290 — Structural Genomics Hypothetical 15.5 Kd Protein In mrcA-pckA Intergenic Region; Chain A
Homologous superfamily homologous superfamily	10 — RNA-binding S4 domain

Domain ID domain_id	7afoX01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	300 — GMP Synthetase; Chain A, domain 3
Homologous superfamily homologous superfamily	70 — RimP-like superfamily, N-terminal

Domain ID domain_id	7afoX02
Class class	2 — Mainly Beta
Architecture architecture	30 — Roll
Topology topology	30 — SH3 type barrels.
Homologous superfamily homologous superfamily	180 — Ribosome maturation factor RimP, C-terminal domain

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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	—

Resolution resolution	3.93 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	23278

Bacterial 30S ribosomal subunit assembly complex state B (body domain)

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

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 S11

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

Other homooligomers

Heteromeric or nucleic-acid complex

30S ribosomal protein S16

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 S17

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 S18

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer