Annotations: 1X18

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
E	d1x18e1	Alpha and beta proteins (a/b)	Flavodoxin-like	Ribosomal protein S2	Ribosomal protein S2	Ribosomal protein S2	(Thermus thermophilus ) [TaxId: 274 ],	SCOPe (2.08)
F	d1x18f1	All alpha proteins	Ribosomal protein S7	Ribosomal protein S7	Ribosomal protein S7	Ribosomal protein S7	(Thermus thermophilus ) [TaxId: 274 ],	SCOPe (2.08)
G	d1x18g1	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Translational machinery components	Ribosomal protein L18 and S11	Ribosomal protein S11	(Thermus thermophilus ) [TaxId: 274 ],	SCOPe (2.08)
H	d1x18h1	All alpha proteins	DNA/RNA-binding 3-helical bundle	Ribosomal protein S18	Ribosomal protein S18	Ribosomal protein S18	(Thermus thermophilus ) [TaxId: 274 ],	SCOPe (2.08)
I [auth X]	d1x18x1	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	G proteins	GTPase Era, N-terminal domain	(Thermus thermophilus ) [TaxId: 274 ],	SCOPe (2.08)
I [auth X]	d1x18x2	Alpha and beta proteins (a+b)	Alpha-lytic protease prodomain-like	Prokaryotic type KH domain (KH-domain type II)	Prokaryotic type KH domain (KH-domain type II)	GTPase Era C-terminal domain	(Thermus thermophilus ) [TaxId: 274 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2B Superfamily	SIS domain/Ribosomal protein S2-like	8044010	3001397	SCOP2B (2022-06-29)
F	SCOP2 Family	Ribosomal protein S7	8021143	4001112	SCOP2 (2022-06-29)
F	SCOP2 Superfamily	Ribosomal protein S7	8033523	3000799	SCOP2 (2022-06-29)
G	SCOP2B Superfamily	Translational machinery components	8044020	3000571	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Ribosomal protein S18	8044028	3001191	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	PF00318	e1x18E1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Ribosomal protein S2/SIS domain (From Topology)	T: Ribosomal protein S2/SIS domain	F: PF00318	ECOD (1.6)
F	PF00177	e1x18F1	A: alpha arrays	X: Ribosomal protein S7 (From Topology)	H: Ribosomal protein S7 (From Topology)	T: Ribosomal protein S7	F: PF00177	ECOD (1.6)
G	PF00411	e1x18G1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: PF00411	ECOD (1.6)
H	PF01084	e1x18H1	A: alpha arrays	X: HTH	H: HTH	T: tri-helical	F: PF01084	ECOD (1.6)
I [auth X]	PF07650	e1x18X1	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: KH-domains	T: Prokaryotic type KH domain (KH-domain type II)	F: PF07650	ECOD (1.6)
I [auth X]	PF01926	e1x18X2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF01926	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E	PF00318	Ribosomal protein S2 (Ribosomal_S2)	Ribosomal protein S2	-	Family
F	PF00177	Ribosomal protein S7p/S5e (Ribosomal_S7)	Ribosomal protein S7p/S5e	This family contains ribosomal protein S7 from prokaryotes and S5 from eukaryotes.	Domain
G	PF00411	Ribosomal protein S11 (Ribosomal_S11)	Ribosomal protein S11	-	Family
H	PF01084	Ribosomal protein S18 (Ribosomal_S18)	Ribosomal protein S18	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
E	30S ribosomal protein S2	structural molecule activity structural constituent of ribosome RNA binding binding organic cyclic compound binding rRNA binding nucleic acid binding	organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process	protein-containing complex intracellular anatomical structure small ribosomal subunit cellular anatomical entity ribosomal subunit intracellular organelle organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle ribosome non-membrane-bounded organelle
A	5'-R(PCPGPAPUPGPGPCPGPAPAP*G)-3'	-	-	-
B	RNA (31-MER)	-	-	-
C	5'-R(PUPUPCPCPCPGPGPGPCPCPUPGPGPGPGPCPCPCPGPC)-3'	-	-	-
D	5'-R(PUPGPUPUPGPGPGPUPUPAPAPGPUPCPCPCPGPCPAPAPCPGPAPG)-3'	-	-	-
F	30S ribosomal protein S7	RNA binding binding organic cyclic compound binding tRNA binding nucleic acid binding structural molecule activity structural constituent of ribosome rRNA binding	organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process	protein-containing complex intracellular anatomical structure small ribosomal subunit cellular anatomical entity ribosomal subunit intracellular organelle organelle ribonucleoprotein complex intracellular non-membrane-bounded organelle ribosome non-membrane-bounded organelle
G	30S ribosomal protein S11	structural molecule activity structural constituent of ribosome RNA binding binding organic cyclic compound binding rRNA binding nucleic acid binding	organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process	protein-containing complex ribonucleoprotein complex intracellular organelle intracellular anatomical structure organelle intracellular non-membrane-bounded organelle ribosome cellular anatomical entity non-membrane-bounded organelle
H	30S ribosomal protein S18	structural molecule activity structural constituent of ribosome RNA binding binding organic cyclic compound binding rRNA binding nucleic acid binding	organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process organonitrogen compound metabolic process cellular biosynthetic process cellular metabolic process organonitrogen compound biosynthetic process primary metabolic process translation gene expression macromolecule biosynthetic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process	protein-containing complex ribonucleoprotein complex intracellular organelle intracellular anatomical structure organelle intracellular non-membrane-bounded organelle ribosome cellular anatomical entity non-membrane-bounded organelle
I [auth X]	GTP-binding protein era	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E	IPR005706	Small ribosomal subunit protein uS2, bacteria/mitochondria/plastid	Family
E	IPR023591	Small ribosomal subunit protein uS2, flavodoxin-like domain superfamily	Homologous Superfamily
E	IPR018130	Small ribosomal subunit protein uS2, conserved site	Conserved Site
E	IPR001865	Small ribosomal subunit protein uS2	Family
F	IPR020606	Small ribosomal subunit protein uS7, conserved site	Conserved Site
F	IPR000235	Small ribosomal subunit protein uS7	Family
F	IPR005717	Small ribosomal subunit protein uS7, bacterial/organellar-type	Family
F	IPR036823	Small ribosomal subunit protein uS7 domain superfamily	Homologous Superfamily
F	IPR023798	Small ribosomal subunit protein uS7 domain	Domain
G	IPR001971	Small ribosomal subunit protein uS11	Family
G	IPR019981	Small ribosomal subunit protein uS11, bacterial-type	Family
G	IPR036967	Small ribosomal subunit protein uS11 superfamily	Homologous Superfamily
G	IPR018102	Small ribosomal subunit protein uS11, conserved site	Conserved Site
H	IPR001648	Small ribosomal subunit protein bS18	Family
H	IPR018275	Small ribosomal subunit protein bS18, conserved site	Conserved Site
H	IPR036870	Small ribosomal subunit protein bS18 superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.