Annotations: 4YIX

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	MRB1590 C-terminal domain-like	8091267	3002492	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	MRB1590 N-terminal domain-like	8091266	3002491	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	ABC transporter-like P-loop ATPases	8091265	3002020	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)
A	COG3044	e4yixA3	A: alpha arrays	X: HTH	H: MRB1590 C-terminal domain (From Topology)	T: MRB1590 C-terminal domain	F: COG3044	ECOD (1.6)
A	ABC_ATPase_N	e4yixA2	A: a+b two layers	X: Type III secretory system chaperone-like	H: MRB1590 N-terminal domain (From Topology)	T: MRB1590 N-terminal domain	F: ABC_ATPase_N	ECOD (1.6)
A	ABC_ATPase_C	e4yixA1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: ABC_ATPase_C	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF09818	P-loop domain (ABC_ATPase)	P-loop domain	This is the C-terminal ATPase domain from bacterial ABC class ATPases. This entry also includes MRB1590 (Swiss:Q57ZF2) from Trypanosoma brucei brucei has a central ATPase domain homologous to this domain [1].	Domain
A	PF20446	ATPase of the ABC class N-terminal (ABC_N)	ATPase of the ABC class N-terminal	This is the N-terminal domain of various bacterial predicted ABC class ATPases which shows sequence and structural similarities to the N-terminal domain of MRB1590 (swiss:Q57ZF2) from kinetoplastids, a core protein of the multiprotein mitochondrial R ...	This is the N-terminal domain of various bacterial predicted ABC class ATPases which shows sequence and structural similarities to the N-terminal domain of MRB1590 (swiss:Q57ZF2) from kinetoplastids, a core protein of the multiprotein mitochondrial RNA binding complex 1 (MRB1) involved in kinetoplastid RNA (kRNA) editing [1]. MRB1590 is a dimer and contains a central ABC ATPase fold (Pfam:PF09818) between novel N- and C-terminal regions. The N-terminal domains combine and form a RNA-binding basic pore which involves an arginine patch that has been suggested to act as a chaperone to bind and stabilize ssRNA during kRNA editing processes. N-terminal MRB1590 shows structural similarity to chaperones [1].	Domain
A	PF21117	MRB1590 C-terminal domain (MRB1590_C)	MRB1590 C-terminal domain	This entry represents the C-terminal helix-turn-helix like domain from the T. brucei kRNA editing factor MRB1590 [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Uncharacterized protein	RNA binding binding organic cyclic compound binding nucleic acid binding mRNA binding nucleoside phosphate binding nucleotide binding heterocyclic compound binding small molecule binding	cellular biosynthetic process cellular metabolic process RNA metabolic process mitochondrial mRNA processing primary metabolic process mitochondrial gene expression gene expression macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process mitochondrial RNA processing organic cyclic compound metabolic process organic substance metabolic process cellular biosynthetic process cellular metabolic process RNA metabolic process mitochondrial mRNA processing primary metabolic process mitochondrial gene expression gene expression macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process mitochondrial RNA processing organic cyclic compound metabolic process organic substance metabolic process biosynthetic process organic substance biosynthetic process metabolic process cellular process macromolecule metabolic process mitochondrial RNA metabolic process RNA processing cytidine to uridine editing RNA modification base conversion or substitution editing macromolecule modification regulation of cellular process negative regulation of biological process positive regulation of macromolecule biosynthetic process negative regulation of cellular metabolic process regulation of primary metabolic process positive regulation of metabolic process post-transcriptional regulation of gene expression regulation of RNA metabolic process negative regulation of nucleobase-containing compound metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality RNA catabolic process mRNA stabilization mRNA catabolic process regulation of biological process negative regulation of metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process nucleobase-containing compound catabolic process regulation of gene expression negative regulation of gene expression negative regulation of macromolecule biosynthetic process nucleic acid catabolic process regulation of macromolecule biosynthetic process regulation of metabolic process negative regulation of RNA metabolic process catabolic process positive regulation of biological process positive regulation of cellular metabolic process macromolecule catabolic process negative regulation of mRNA metabolic process regulation of mRNA catabolic process positive regulation of biosynthetic process negative regulation of cellular process positive regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of catabolic process biological regulation negative regulation of mRNA catabolic process negative regulation of RNA catabolic process regulation of macromolecule metabolic process regulation of catabolic process organic cyclic compound catabolic process regulation of cellular biosynthetic process regulation of mRNA stability RNA stabilization negative regulation of biosynthetic process positive regulation of gene expression regulation of RNA stability regulation of mRNA metabolic process organic substance catabolic process positive regulation of cellular biosynthetic process	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR046834	ATPase of the ABC class, C-terminal	Domain
A	IPR046833	ATPase of the ABC class, N-terminal	Domain
A	IPR049069	MRB1590-like, C-terminal domain	Domain
A	IPR019195	ABC transporter, ATPase, putative	Family
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	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.