Annotations: 7Z4Z

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	rRNA_proc-arch_2nd	e7z4zB1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: rRNA_proc-arch_2nd	ECOD (1.6)
B	rRNA_proc-arch_3rd	e7z4zB2	A: extended segments	X: Helical arch in Ski2-like helicases (From Topology)	H: Helical arch in Ski2-like helicases (From Topology)	T: Helical arch in Ski2-like helicases	F: rRNA_proc-arch_3rd	ECOD (1.6)
D	rRNA_proc-arch_2nd	e7z4zD1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: rRNA_proc-arch_2nd	ECOD (1.6)
D	rRNA_proc-arch_3rd	e7z4zD2	A: extended segments	X: Helical arch in Ski2-like helicases (From Topology)	H: Helical arch in Ski2-like helicases (From Topology)	T: Helical arch in Ski2-like helicases	F: rRNA_proc-arch_3rd	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF13234	Mtr4-like, beta-barrel domain (MTR4_beta-barrel)	Mtr4-like, beta-barrel domain	Exosome RNA helicase Mtr4 is a essential RNA helicase, and is an exosome-activating cofactor. It functions together with the nuclear exosome being involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclea ...	Exosome RNA helicase Mtr4 is a essential RNA helicase, and is an exosome-activating cofactor. It functions together with the nuclear exosome being involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclear RNA surveillance pathways involving the so-called TRAMP complex [1,2,3]. It contains an arch domain, required for proper 5.8S rRNA processing, and appears to function independently of canonical helicase activity [3]. The arch domain comprises an helical stalk/elbow that flanks a KOW module which adopts a beta-barrel fold. This entry represents the beta-barrel of MTR4 and related Ski2-like helicases. Ski2 from yeast has an overall similar structure to MTR4 proteins. However, it does not have the KOW motif [4] and it is not included in this entry.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Zinc finger CCHC domain-containing protein 8	cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding RNA binding organic cyclic compound binding nucleic acid binding	mRNA 3'-end processing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process RNA 3'-end processing mRNA 3'-end processing RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process mRNA processing mRNA metabolic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process RNA 3'-end processing metabolic process cellular process RNA processing macromolecule metabolic process RNA splicing RNA splicing, via transesterification reactions mRNA splicing, via spliceosome RNA splicing, via transesterification reactions with bulged adenosine as nucleophile catabolic process macromolecule catabolic process nucleobase-containing compound catabolic process snRNA metabolic process snRNA catabolic process nucleic acid catabolic process RNA catabolic process	membrane-bounded organelle catalytic step 2 spliceosome protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex TRAMP complex membrane-bounded organelle catalytic step 2 spliceosome protein-containing complex intracellular anatomical structure catalytic complex nucleus nuclear protein-containing complex intracellular membrane-bounded organelle intracellular organelle cellular anatomical structure spliceosomal complex organelle ribonucleoprotein complex TRAMP complex membrane-enclosed lumen intracellular organelle lumen nuclear body nucleoplasm organelle lumen nuclear lumen
B, D	Exosome RNA helicase MTR4	RNA binding binding organic cyclic compound binding nucleic acid binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding RNA binding binding organic cyclic compound binding nucleic acid binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid helicase activity RNA helicase activity ATP-dependent activity, acting on RNA	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process ribonucleoprotein complex biogenesis RNA metabolic process primary metabolic process rRNA processing gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process ribonucleoprotein complex biogenesis RNA metabolic process primary metabolic process rRNA processing gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process cellular component biogenesis RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process biosynthetic process metabolic process macromolecule metabolic process cellular component organization or biogenesis RNA processing rRNA metabolic process catabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleic acid catabolic process RNA catabolic process RNA splicing mRNA processing mRNA metabolic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome RNA splicing, via transesterification reactions with bulged adenosine as nucleophile snRNA metabolic process snRNA catabolic process maturation of 5.8S rRNA	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membraneless organelle intracellular membrane-bounded organelle nucleolus intracellular organelle lumen intracellular organelle cellular anatomical structure organelle lumen organelle membraneless organelle nuclear lumen nuclear speck nuclear body nucleoplasm catalytic step 2 spliceosome protein-containing complex catalytic complex nuclear protein-containing complex spliceosomal complex ribonucleoprotein complex TRAMP complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR006568	PSP, proline-rich	Domain
A, C	IPR001878	Zinc finger, CCHC-type	Domain
A, C	IPR052115	Nuclear exosome targeting complex subunit ZCCHC8	Family
B, D	IPR048392	Exosome RNA helicase MTR4-like, stalk	Domain
B, D	IPR050699	RNA/DNA Helicase	Family
B, D	IPR012961	ATP-dependent RNA helicase Ski2/MTR4, C-terminal	Domain
B, D	IPR025696	Exosome RNA helicase MTR4-like, beta-barrel domain	Domain
B, D	IPR016438	ATP-dependent RNA helicase SKI2-like	Family
B, D	IPR011545	DEAD/DEAH box helicase domain	Domain
B, D	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B, D	IPR001650	Helicase, C-terminal domain-like	Domain
B, D	IPR014001	Helicase superfamily 1/2, ATP-binding domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, C	Pharos: Q6NZY4	intellectual disability astrocytic tumor Mental deficiency ovarian cancer atypical teratoid rhabdoid tumor malignant mesothelioma plasma cell myeloma glioblastoma medulloblastoma osteosarcoma
B, D	Pharos: P42285	ovarian cancer

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 R01GM157729.