5FIR

Crystal structure of C. elegans XRN2 in complex with the XRN2-binding domain of PAXT-1

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	PF17846	e5firC3	A: alpha arrays	X: Helical domain in 5'->3' exoribonucleases (From Topology)	H: Helical domain in 5'->3' exoribonucleases (From Topology)	T: Helical domain in 5'->3' exoribonucleases	F: PF17846	ECOD (1.6)
C	F_UNCLASSIFIED	e5firC4	A: a+b three layers	X: C-terminal segment in 5'->3' exoribonucleases (From Topology)	H: C-terminal segment in 5'->3' exoribonucleases (From Topology)	T: C-terminal segment in 5'->3' exoribonucleases	F: F_UNCLASSIFIED	ECOD (1.6)
C	PF03159	e5firC2	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF03159	ECOD (1.6)
K	PF17846	e5firK3	A: alpha arrays	X: Helical domain in 5'->3' exoribonucleases (From Topology)	H: Helical domain in 5'->3' exoribonucleases (From Topology)	T: Helical domain in 5'->3' exoribonucleases	F: PF17846	ECOD (1.6)
K	F_UNCLASSIFIED	e5firK4	A: a+b three layers	X: C-terminal segment in 5'->3' exoribonucleases (From Topology)	H: C-terminal segment in 5'->3' exoribonucleases (From Topology)	T: C-terminal segment in 5'->3' exoribonucleases	F: F_UNCLASSIFIED	ECOD (1.6)
K	PF03159	e5firK2	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF03159	ECOD (1.6)
A	PF17846	e5firA2	A: alpha arrays	X: Helical domain in 5'->3' exoribonucleases (From Topology)	H: Helical domain in 5'->3' exoribonucleases (From Topology)	T: Helical domain in 5'->3' exoribonucleases	F: PF17846	ECOD (1.6)
A	F_UNCLASSIFIED	e5firA3	A: a+b three layers	X: C-terminal segment in 5'->3' exoribonucleases (From Topology)	H: C-terminal segment in 5'->3' exoribonucleases (From Topology)	T: C-terminal segment in 5'->3' exoribonucleases	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF03159	e5firA1	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF03159	ECOD (1.6)
E	PF17846	e5firE3	A: alpha arrays	X: Helical domain in 5'->3' exoribonucleases (From Topology)	H: Helical domain in 5'->3' exoribonucleases (From Topology)	T: Helical domain in 5'->3' exoribonucleases	F: PF17846	ECOD (1.6)
E	F_UNCLASSIFIED	e5firE4	A: a+b three layers	X: C-terminal segment in 5'->3' exoribonucleases (From Topology)	H: C-terminal segment in 5'->3' exoribonucleases (From Topology)	T: C-terminal segment in 5'->3' exoribonucleases	F: F_UNCLASSIFIED	ECOD (1.6)
E	PF03159	e5firE2	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF03159	ECOD (1.6)
G	PF17846	e5firG3	A: alpha arrays	X: Helical domain in 5'->3' exoribonucleases (From Topology)	H: Helical domain in 5'->3' exoribonucleases (From Topology)	T: Helical domain in 5'->3' exoribonucleases	F: PF17846	ECOD (1.6)
G	F_UNCLASSIFIED	e5firG4	A: a+b three layers	X: C-terminal segment in 5'->3' exoribonucleases (From Topology)	H: C-terminal segment in 5'->3' exoribonucleases (From Topology)	T: C-terminal segment in 5'->3' exoribonucleases	F: F_UNCLASSIFIED	ECOD (1.6)
G	PF03159	e5firG2	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF03159	ECOD (1.6)
I	PF17846	e5firI3	A: alpha arrays	X: Helical domain in 5'->3' exoribonucleases (From Topology)	H: Helical domain in 5'->3' exoribonucleases (From Topology)	T: Helical domain in 5'->3' exoribonucleases	F: PF17846	ECOD (1.6)
I	F_UNCLASSIFIED	e5firI4	A: a+b three layers	X: C-terminal segment in 5'->3' exoribonucleases (From Topology)	H: C-terminal segment in 5'->3' exoribonucleases (From Topology)	T: C-terminal segment in 5'->3' exoribonucleases	F: F_UNCLASSIFIED	ECOD (1.6)
I	PF03159	e5firI2	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: PIN domain-like	F: PF03159	ECOD (1.6)
D	PF11952	e5firD1	A: alpha arrays	X: C-terminal domain of Hypothetical protein MPN330-like	H: XRN2-binding domain (XTBD) (From Topology)	T: XRN2-binding domain (XTBD)	F: PF11952	ECOD (1.6)
F	PF11952	e5firF1	A: alpha arrays	X: C-terminal domain of Hypothetical protein MPN330-like	H: XRN2-binding domain (XTBD) (From Topology)	T: XRN2-binding domain (XTBD)	F: PF11952	ECOD (1.6)
H	PF11952	e5firH1	A: alpha arrays	X: C-terminal domain of Hypothetical protein MPN330-like	H: XRN2-binding domain (XTBD) (From Topology)	T: XRN2-binding domain (XTBD)	F: PF11952	ECOD (1.6)
J	PF11952	e5firJ1	A: alpha arrays	X: C-terminal domain of Hypothetical protein MPN330-like	H: XRN2-binding domain (XTBD) (From Topology)	T: XRN2-binding domain (XTBD)	F: PF11952	ECOD (1.6)
L	PF11952	e5firL1	A: alpha arrays	X: C-terminal domain of Hypothetical protein MPN330-like	H: XRN2-binding domain (XTBD) (From Topology)	T: XRN2-binding domain (XTBD)	F: PF11952	ECOD (1.6)
B	PF11952	e5firB1	A: alpha arrays	X: C-terminal domain of Hypothetical protein MPN330-like	H: XRN2-binding domain (XTBD) (From Topology)	T: XRN2-binding domain (XTBD)	F: PF11952	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E, G, I A, C, E, G, I, K	PF17846	Xrn1 helical domain (XRN_M)	Xrn1 helical domain	This helical domain is part of the Xrn1 catalytic core [1]. Xrn1 is a cytoplasmic 5'-3' exonuclease that degrades decapped mRNAs.	Domain
B, D, F, H, J B, D, F, H, J, L	PF11952	XRN-Two Binding Domain, XTBD (XTBD)	XRN-Two Binding Domain, XTBD	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C, E, G, I A, C, E, G, I, K	5'-3' EXORIBONUCLEASE 2 HOMOLOG	nuclease activity hydrolase activity, acting on ester bonds 5'-3' exonuclease activity hydrolase activity exonuclease activity catalytic activity 5'-3' RNA exonuclease activity catalytic activity, acting on RNA RNA exonuclease activity, producing 5'-phosphomonoesters catalytic activity, acting on a nucleic acid RNA exonuclease activity RNA nuclease activity exonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters RNA binding nuclease activity hydrolase activity, acting on ester bonds 5'-3' exonuclease activity hydrolase activity exonuclease activity catalytic activity 5'-3' RNA exonuclease activity catalytic activity, acting on RNA RNA exonuclease activity, producing 5'-phosphomonoesters catalytic activity, acting on a nucleic acid RNA exonuclease activity RNA nuclease activity exonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters RNA binding binding organic cyclic compound binding nucleic acid binding cation binding ion binding metal ion binding small molecule binding	regulation of cellular process catabolic process cellular biosynthetic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process macromolecule catabolic process nucleobase-containing compound metabolic process negative regulation of cellular process RNA catabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process mRNA catabolic process nuclear-transcribed mRNA catabolic process regulation of cellular process catabolic process cellular biosynthetic process negative regulation of biological process RNA metabolic process negative regulation of cellular metabolic process macromolecule catabolic process nucleobase-containing compound metabolic process negative regulation of cellular process RNA catabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process mRNA catabolic process nuclear-transcribed mRNA catabolic process regulation of biological process cellular metabolic process negative regulation of metabolic process biological regulation regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process mRNA metabolic process negative regulation of cellular biosynthetic process nucleic acid metabolic process nucleobase-containing compound catabolic process regulation of cellular biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process nucleic acid catabolic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process nucleobase-containing compound biosynthetic process DNA-templated transcription termination RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II termination of RNA polymerase II transcription positive regulation of macromolecule biosynthetic process post-transcriptional regulation of gene expression positive regulation of metabolic process positive regulation of macromolecule metabolic process miRNA-mediated post-transcriptional gene silencing negative regulation of miRNA-mediated gene silencing post-transcriptional gene silencing negative regulation of post-transcriptional gene silencing positive regulation of biological process positive regulation of cellular metabolic process regulation of miRNA-mediated gene silencing negative regulation of post-transcriptional gene silencing by regulatory ncRNA regulation of gene silencing by regulatory ncRNA positive regulation of biosynthetic process regulation of post-transcriptional gene silencing by regulatory ncRNA positive regulation of cellular process negative regulation of gene silencing by regulatory ncRNA regulatory ncRNA-mediated post-transcriptional gene silencing regulatory ncRNA-mediated gene silencing regulation of post-transcriptional gene silencing positive regulation of gene expression positive regulation of cellular biosynthetic process miRNA catabolic process miRNA metabolic process developmental process regulation of development, heterochronic regulation of developmental process multicellular organismal process vulval development animal organ development nematode larval development larval development regulation of vulval development multicellular organism development anatomical structure development post-embryonic development mRNA processing RNA processing	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
B, D, F, H, J B, D, F, H, J, L	PAXT-1	-	catabolic process RNA metabolic process primary metabolic process miRNA catabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process nucleic acid catabolic process metabolic process miRNA metabolic process macromolecule metabolic process RNA catabolic process cellular biosynthetic process catabolic process RNA metabolic process primary metabolic process miRNA catabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process nucleic acid catabolic process metabolic process miRNA metabolic process macromolecule metabolic process RNA catabolic process cellular biosynthetic process cellular metabolic process gene expression nucleobase-containing compound biosynthetic process mRNA processing mRNA metabolic process macromolecule biosynthetic process RNA biosynthetic process nucleic acid biosynthetic process biosynthetic process cellular process RNA processing regulation of cellular process negative regulation of biological process positive regulation of macromolecule biosynthetic process negative regulation of cellular metabolic process post-transcriptional regulation of gene expression positive regulation of metabolic process positive regulation of macromolecule metabolic process regulation of biological process negative regulation of metabolic process regulation of cellular metabolic process negative regulation of cellular biosynthetic process miRNA-mediated post-transcriptional gene silencing regulation of gene expression negative regulation of gene expression negative regulation of miRNA-mediated gene silencing negative regulation of macromolecule biosynthetic process post-transcriptional gene silencing regulation of macromolecule biosynthetic process negative regulation of post-transcriptional gene silencing regulation of metabolic process positive regulation of biological process positive regulation of cellular metabolic process regulation of miRNA-mediated gene silencing negative regulation of post-transcriptional gene silencing by regulatory ncRNA regulation of gene silencing by regulatory ncRNA positive regulation of biosynthetic process negative regulation of cellular process regulation of post-transcriptional gene silencing by regulatory ncRNA positive regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of gene silencing by regulatory ncRNA biological regulation regulation of macromolecule metabolic process regulatory ncRNA-mediated post-transcriptional gene silencing regulatory ncRNA-mediated gene silencing regulation of cellular biosynthetic process regulation of post-transcriptional gene silencing negative regulation of biosynthetic process positive regulation of gene expression positive regulation of cellular biosynthetic process	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 nucleoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G, I A, C, E, G, I, K	IPR027073	5'-3' exoribonuclease	Family
A, C, E, G, I A, C, E, G, I, K	IPR041412	Xrn1, helical domain	Domain
A, C, E, G, I A, C, E, G, I, K	IPR004859	Xrn1, N-terminal	Domain
A, C, E, G, I A, C, E, G, I, K	IPR017151	5'-3' exoribonuclease type 2	Family
B, D, F, H, J B, D, F, H, J, L	IPR021859	XRN2-binding (XTBD) domain	Domain

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.

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5FIR

Crystal structure of C. elegans XRN2 in complex with the XRN2-binding domain of PAXT-1

External Resource: Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage