Chains	Domain	Class	Architecture	Topology	Homology
B1	4dr2B01	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Glucose-6-phosphate isomerase like protein; domain 1
B2	4dr2B02	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin
C1	4dr2C01	Alpha Beta	2-Layer Sandwich	GMP Synthetase; Chain A, domain 3
C2	4dr2C02	Alpha Beta	2-Layer Sandwich	Ribosomal protein S3 C-terminal domain
D1	4dr2D01	Mainly Alpha	Orthogonal Bundle	Ribosomal Protein S4 Delta 41; Chain A, domain 1	Ribosomal Protein S4 Delta 41; Chain A, domain 1
D2	4dr2D02	Alpha Beta	Roll	Structural Genomics Hypothetical 15.5 Kd Protein In mrcA- pckA Intergenic Region; Chain A	Structural Genomics Hypothetical 15.5 Kd Protein In Mrca- pcka Intergenic Region; Chain
E1	4dr2E01	Alpha Beta	2-Layer Sandwich	Double Stranded RNA Binding Domain
E2	4dr2E02	Alpha Beta	2-Layer Sandwich	Ribosomal Protein S5; domain 2
F	4dr2F00	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits
G	4dr2G00	Mainly Alpha	Orthogonal Bundle	Ribosomal Protein S7	Ribosomal Protein S7;
H2	4dr2H02	Alpha Beta	2-Layer Sandwich	Dna Ligase; domain 1
I	4dr2I00	Alpha Beta	2-Layer Sandwich	Ribosomal Protein S5; domain 2
K	4dr2K00	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase; domain 5
L	4dr2L00	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins
M1	4dr2M01	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein; domain 3
M2	4dr2M02	Few Secondary Structures	Irregular	30s ribosomal protein s13; domain 2	30s ribosomal protein s13, domain 2
N	4dr2N00	Few Secondary Structures	Irregular	30s Ribosomal Protein S14; Chain N	30s Ribosomal Protein S14; Chain N
O	4dr2O00	Mainly Alpha	Orthogonal Bundle	Helix Hairpins
R	4dr2R00	Few Secondary Structures	Irregular	30s Ribosomal Protein S18	30s Ribosomal Protein S18
S	4dr2S00	Alpha Beta	2-Layer Sandwich	30s Ribosomal Protein S19; Chain A	30s Ribosomal Protein S19; Chain A
T	4dr2T00	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase; Chain G, domain 1

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	16S rRNA (4DR2:A)	none	none	none
B	30S ribosomal protein S2 (4DR2:B)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
C	30S ribosomal protein S3 (4DR2:C)	Nucleic Acid Binding RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
D	30S ribosomal protein S4 (4DR2:D)	RNA Binding Structural Constituent of Ribosome RRNA Binding Metal Ion Binding	Translation	Intracellular Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
E	30S ribosomal protein S5 (4DR2:E)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
F	30S ribosomal protein S6 (4DR2:F)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Intracellular Ribonucleoprotein Complex
G	30S ribosomal protein S7 (4DR2:G)	TRNA Binding RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
H	30S ribosomal protein S8 (4DR2:H)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Intracellular Ribonucleoprotein Complex
I	30S ribosomal protein S9 (4DR2:I)	TRNA Binding RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Intracellular Ribonucleoprotein Complex
J	30S ribosomal protein S10 (4DR2:J)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
K	30S ribosomal protein S11 (4DR2:K)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
L	30S ribosomal protein S12 (4DR2:L)	TRNA Binding RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
M	30S ribosomal protein S13 (4DR2:M)	TRNA Binding Nucleic Acid Binding RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
N	30S ribosomal protein S14 (4DR2:N)	RNA Binding Structural Constituent of Ribosome RRNA Binding Metal Ion Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
O	30S ribosomal protein S15 (4DR2:O)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
P	30S ribosomal protein S16 (4DR2:P)	Structural Constituent of Ribosome	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
Q	30S ribosomal protein S17 (4DR2:Q)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
R	30S ribosomal protein S18 (4DR2:R)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
S	30S ribosomal protein S19 (4DR2:S)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Ribosome Small Ribosomal Subunit Intracellular Ribonucleoprotein Complex
T	30S ribosomal protein S20 (4DR2:T)	RNA Binding Structural Constituent of Ribosome RRNA Binding	Translation	Intracellular Ribosome Intracellular Ribonucleoprotein Complex
U	30S ribosomal protein THX (4DR2:U)	RNA Binding RRNA Binding	none	Ribosome Intracellular Ribonucleoprotein Complex

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4DR2

Crystal structure of the Thermus thermophilus (HB8) 30S ribosomal subunit with multiple copies of paromomycin molecules bound

Macromolecule Annotations for the Entities in PDB 4DR2

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Protein Modification Annotation