Annotations: 7Z4Z

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	PF13234	e7z4zB1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF13234	ECOD (1.6)
B	PF13234	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: PF13234	ECOD (1.6)
D	PF13234	e7z4zD1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF13234	ECOD (1.6)
D	PF13234	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: PF13234	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF21408	Exosome RNA helicase MTR4-like, stalk (MTR4-like_stalk)	Exosome RNA helicase MTR4-like, stalk	Exosome RNA helicase MTR4 is a conserved RNA helicase that functions together with the nuclear exosome and it is involved in processing of structured RNAs, including snRNAs and snoRNAs. It also plays a role in nuclear RNA surveillance pathways involv ...	Exosome RNA helicase MTR4 is a conserved RNA helicase that functions together with the nuclear exosome and it is 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]. 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 helical stalk found at the N-terminal of KOW beta-barrel from MTR4 [1-3]. This entry also includes Ski2-like helicases which have an overall similar structure to MTR4 proteins. However, Ski2 from yeast does not have the KOW motif and the beta-barrel is tightly packed against the helical stalk [3].	Domain
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. Thsi 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	RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression mRNA processing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via transesterification reactions RNA splicing cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process gene expression mRNA processing mRNA metabolic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome organic substance biosynthetic process metabolic process cellular process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile macromolecule metabolic process RNA processing catabolic process macromolecule catabolic process organic cyclic compound catabolic process nucleobase-containing compound catabolic process snRNA metabolic process snRNA catabolic process ncRNA metabolic process nucleic acid catabolic process organic substance catabolic process RNA catabolic process	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen nuclear body intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen catalytic step 2 spliceosome membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lumen nuclear body intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen catalytic step 2 spliceosome protein-containing complex catalytic complex nuclear protein-containing complex spliceosomal complex ribonucleoprotein complex TRAMP complex
B, D	Exosome RNA helicase MTR4	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound 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 RNA binding nucleic acid binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process catabolic process RNA metabolic process primary metabolic process nucleic acid metabolic process macromolecule catabolic process organic cyclic compound catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process catabolic process RNA metabolic process primary metabolic process nucleic acid metabolic process macromolecule catabolic process organic cyclic compound catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process organic substance metabolic process nucleic acid catabolic process metabolic process macromolecule metabolic process organic substance catabolic process RNA catabolic process RNA splicing cellular biosynthetic process cellular metabolic process gene expression mRNA processing mRNA metabolic process macromolecule biosynthetic process biosynthetic process RNA splicing, via transesterification reactions mRNA splicing, via spliceosome organic substance biosynthetic process RNA splicing, via transesterification reactions with bulged adenosine as nucleophile RNA processing snRNA metabolic process snRNA catabolic process ncRNA metabolic process ribonucleoprotein complex biogenesis rRNA processing cellular component biogenesis ribosome biogenesis cellular component organization or biogenesis rRNA metabolic process maturation of 5.8S rRNA	membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle membrane-bounded organelle intracellular anatomical structure nucleus membrane-enclosed lumen intracellular membrane-bounded organelle cellular anatomical entity nucleolus intracellular organelle lumen intracellular organelle organelle lumen organelle intracellular non-membrane-bounded organelle nuclear lumen non-membrane-bounded organelle 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
B, D	IPR048392	Exosome RNA helicase MTR4-like, stalk	Domain
B, D	IPR012961	ATP-dependent RNA helicase Ski2/MTR4, C-terminal	Domain
B, D	IPR001650	Helicase, C-terminal domain-like	Domain
B, D	IPR014001	Helicase superfamily 1/2, ATP-binding domain	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

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 R01GM133198.