Annotations: 2APO

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2apoa1	All beta proteins	PUA domain-like	PUA domain-like	PUA domain	Pseudouridine synthase II TruB, C-terminal domain	(Methanocaldococcus jannaschii ) [TaxId: 2190 ],	SCOPe (2.08)
A	d2apoa2	Alpha and beta proteins (a+b)	Pseudouridine synthase	Pseudouridine synthase	Pseudouridine synthase II TruB	Pseudouridine synthase II TruB	(Methanocaldococcus jannaschii ) [TaxId: 2190 ],	SCOPe (2.08)
B	d2apob_	Small proteins	Rubredoxin-like	Nop10-like SnoRNP	Nucleolar RNA-binding protein Nop10-like	Ribosome biogenesis protein Nop10	(Methanocaldococcus jannaschii ) [TaxId: 2190 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Pseudouridine synthase II TruB	8024857	4003455	SCOP2 (2022-06-29)
A	SCOP2 Family	PUA domain	8024854	4003536	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Pseudouridine synthase	8037236	3001360	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	PUA domain-like	8037233	3001015	SCOP2 (2022-06-29)
B	SCOP2 Family	Nucleolar RNA-binding protein Nop10-like	8024858	4000515	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Nop10-like SnoRNP Znf-like	8037237	3000486	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PUA	e2apoA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: PUA domain	F: PUA	ECOD (1.6)
A	TruB_N	e2apoA2	A: a+b two layers	X: Alpha-beta plaits	H: Pseudouridine synthase (From Topology)	T: Pseudouridine synthase	F: TruB_N	ECOD (1.6)
B	Nop10p	e2apoB1	A: few secondary structure elements	X: Rubredoxin-like	H: Nucleolar RNA-binding protein Nop10-like (From Topology)	T: Nucleolar RNA-binding protein Nop10-like	F: Nop10p	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.130.10	Mainly Beta	Roll	Archaeosine Trna-guanine Transglycosylase	Chain: A, domain 4	CATH (4.3.0)
A	3.30.70.3190	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
B	2.20.28.40	Mainly Beta	Single Sheet	Rubrerythrin, domain 2	H/ACA ribonucleoprotein complex, subunit Nop10	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF08068	DKCLD (NUC011) domain (DKCLD)	DKCLD (NUC011) domain	This is a TruB_N/PUA domain associated N-terminal domain of Dyskerin-like proteins [1].	Domain
A	PF16198	tRNA pseudouridylate synthase B C-terminal domain (TruB_C_2)	tRNA pseudouridylate synthase B C-terminal domain	-	Family
A	PF01509	TruB family pseudouridylate synthase (N terminal domain) (TruB_N)	TruB family pseudouridylate synthase (N terminal domain)	-	Family
A	PF01472	PUA domain (PUA)	PUA domain	-	Family
B	PF04135	Nucleolar RNA-binding protein, Nop10p family (Nop10p)	Nucleolar RNA-binding protein, Nop10p family	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Probable tRNA pseudouridine synthase B	isomerase activity pseudouridine synthase activity catalytic activity intramolecular transferase activity tRNA pseudouridine synthase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA RNA binding binding organic cyclic compound binding nucleic acid binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing rRNA modification nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process pseudouridine synthesis ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing rRNA modification nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process pseudouridine synthesis rRNA pseudouridine synthesis cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process RNA modification biosynthetic process macromolecule modification ncRNA metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process snRNA modification snRNA pseudouridine synthesis snRNA metabolic process mRNA modification mRNA metabolic process mRNA pseudouridine synthesis box H/ACA sno(s)RNA processing sno(s)RNA metabolic process RNA 3'-end processing box H/ACA sno(s)RNA 3'-end processing sno(s)RNA processing sno(s)RNA 3'-end processing box H/ACA sno(s)RNA metabolic process tRNA processing tRNA pseudouridine synthesis tRNA modification tRNA metabolic process	-
B	Ribosome biogenesis protein Nop10	RNA binding binding organic cyclic compound binding snoRNA binding nucleic acid binding	ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process cellular metabolic process primary metabolic process ribonucleoprotein complex biogenesis cellular biosynthetic process RNA metabolic process rRNA processing nucleobase-containing compound metabolic process cellular component biogenesis ribosome biogenesis organic substance metabolic process organic substance biosynthetic process cellular component organization or biogenesis RNA processing rRNA metabolic process cellular metabolic process primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process organic cyclic compound metabolic process biosynthetic process ncRNA metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process pseudouridine synthesis RNA modification macromolecule modification	protein-containing complex ribonucleoprotein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR015947	PUA-like superfamily	Homologous Superfamily
A	IPR020103	Pseudouridine synthase, catalytic domain superfamily	Homologous Superfamily
A	IPR004521	Uncharacterised domain CHP00451	Domain
A	IPR002501	Pseudouridine synthase II, N-terminal	Domain
A	IPR026326	Probable tRNA pseudouridine synthase B, archaeal	Family
A	IPR032819	tRNA pseudouridylate synthase B, C-terminal	Domain
A	IPR036974	PUA domain superfamily	Homologous Superfamily
A	IPR012960	Dyskerin-like	Domain
A	IPR002478	PUA domain	Domain
A	IPR004802	tRNA pseudouridine synthase B family	Family
B	IPR023532	H/ACA ribonucleoprotein complex subunit Nop10 , archaeal-type	Family
B	IPR007264	H/ACA ribonucleoprotein complex, subunit Nop10	Family
B	IPR036756	H/ACA ribonucleoprotein complex, subunit Nop10 superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.