9QH0 | pdb_00009qh0

Escherichia coli polynucleotide phosphorylase in complex with recognition site of RNase E

External Resource: Annotation

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

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF03726	Polyribonucleotide nucleotidyltransferase, RNA binding domain (PNPase)	Polyribonucleotide nucleotidyltransferase, RNA binding domain	This family contains the RNA binding domain of Polyribonucleotide nucleotidyltransferase (PNPase) PNPase is involved in mRNA degradation in a 3'-5' direction.	Domain
A, B, C	PF03725	3' exoribonuclease family, domain 2 (RNase_PH_C)	3' exoribonuclease family, domain 2	This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...	This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.	Domain
A, B, C	PF01138	3' exoribonuclease family, domain 1 (RNase_PH)	3' exoribonuclease family, domain 1	This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of ...	This family includes 3'-5' exoribonucleases. Ribonuclease PH contains a single copy of this domain, and removes nucleotide residues following the -CCA terminus of tRNA. Polyribonucleotide nucleotidyltransferase (PNPase) contains two tandem copies of the domain. PNPase is involved in mRNA degradation in a 3'-5' direction. The exosome is a 3'-5' exoribonuclease complex that is required for 3' processing of the 5.8S rRNA. Three of its five protein components, Swiss:P46948 Swiss:Q12277 and Swiss:P25359 contain a copy of this domain [1]. Swiss:Q10205, a hypothetical protein from S. pombe appears to belong to an uncharacterised subfamily. This subfamily is found in both eukaryotes and archaebacteria.	Domain
D	PF12111	Polyribonucleotide phosphorylase C terminal (PNPase_C)	Polyribonucleotide phosphorylase C terminal	PNPase regulates the expression of small non-coding RNAs that control expression of outer-membrane proteins. The enzyme also affects complex processes, such as the tissue-invasive virulence of Salmonella enterica and the regulation of a virulence-fac ...	PNPase regulates the expression of small non-coding RNAs that control expression of outer-membrane proteins. The enzyme also affects complex processes, such as the tissue-invasive virulence of Salmonella enterica and the regulation of a virulence-factor secretion system in Yersinia. In Escherichia coli, PNPase is involved in the quality control of ribosomal RNA precursors and is required for growth following cold shock. This family contains the C terminal protomer domain of the PNPase core. The function of the C terminal protomer is to catalyse phosphorolysis through its two active sites. [1]	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Polyribonucleotide nucleotidyltransferase	guanyl nucleotide binding binding cyclic nucleotide binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding cyclic-di-GMP binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding guanyl nucleotide binding binding cyclic nucleotide binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding cyclic-di-GMP binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding 3'-5'-RNA exonuclease activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA exonuclease activity, producing 5'-phosphomonoesters 3'-5' exonuclease activity RNA exonuclease activity RNA nuclease activity hydrolase activity hydrolase activity, acting on ester bonds nuclease activity exonuclease activity catalytic activity RNA binding nucleic acid binding cation binding magnesium ion binding metal ion binding polyribonucleotide nucleotidyltransferase activity transferase activity nucleotidyltransferase activity transferase activity, transferring phosphorus-containing groups identical protein binding protein binding	RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process RNA metabolic process primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process nucleic acid biosynthetic process biosynthetic process metabolic process cellular process RNA processing macromolecule metabolic process catabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleic acid catabolic process RNA catabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process mRNA catabolic process regulation of biological process negative regulation of metabolic process biological regulation regulation of macromolecule metabolic process mRNA metabolic process regulation of gene expression negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of metabolic process response to stimulus response to stress response to heat response to abiotic stimulus response to temperature stimulus	cellular anatomical structure membrane bacterial degradosome exosome (RNase complex) protein-containing complex intracellular anatomical structure catalytic complex cytoplasm cytosol cytoplasmic exosome (RNase complex) exoribonuclease complex
D	Ribonuclease E	RNA binding binding rRNA binding nucleic acid binding tRNA binding cation binding magnesium ion binding ion binding metal ion binding small molecule binding 7S RNA binding endonuclease activity RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism catalytic activity, acting on RNA RNA binding binding rRNA binding nucleic acid binding tRNA binding cation binding magnesium ion binding ion binding metal ion binding small molecule binding 7S RNA binding endonuclease activity RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity ribonuclease E activity hydrolase activity, acting on ester bonds nuclease activity RNA endonuclease activity catalytic activity protein binding enzyme binding DEAD/H-box RNA helicase binding molecular adaptor activity transition metal ion binding zinc ion binding identical protein binding	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis protein homotetramerization protein tetramerization protein homooligomerization ribonucleoprotein complex biogenesis RNA metabolic process primary metabolic process cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis protein homotetramerization protein tetramerization protein homooligomerization 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 RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process biosynthetic process metabolic process macromolecule metabolic process RNA processing rRNA metabolic process tRNA metabolic process tRNA processing catabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleic acid catabolic process RNA catabolic process regulation of cellular process negative regulation of biological process negative regulation of cellular process negative regulation of macromolecule metabolic process regulation of biosynthetic process mRNA catabolic process regulation of biological process negative regulation of metabolic process biological regulation regulation of macromolecule metabolic process mRNA metabolic process regulation of gene expression negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process regulation of metabolic process regulation of ATP-dependent activity regulation of molecular function regulation of RNA helicase activity regulation of catalytic activity rRNA 5'-end processing RNA 5'-end processing	cellular anatomical structure membrane bacterial degradosome exosome (RNase complex) protein-containing complex intracellular anatomical structure catalytic complex cytoplasm cytosol cytoplasmic exosome (RNase complex) exoribonuclease complex endoribonuclease complex intracellular protein-containing complex endonuclease complex cellular anatomical structure membrane bacterial degradosome exosome (RNase complex) protein-containing complex intracellular anatomical structure catalytic complex cytoplasm cytosol cytoplasmic exosome (RNase complex) exoribonuclease complex endoribonuclease complex intracellular protein-containing complex endonuclease complex cell periphery cytoplasmic side of plasma membrane cytoplasmic side of membrane plasma membrane side of membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR004087	K Homology domain	Domain
A, B, C	IPR012162	Polyribonucleotide nucleotidyltransferase	Family
A, B, C	IPR027408	PNPase/RNase PH domain superfamily	Homologous Superfamily
A, B, C	IPR036612	K Homology domain, type 1 superfamily	Homologous Superfamily
A, B, C	IPR036456	Polyribonucleotide nucleotidyltransferase, RNA-binding domain superfamily	Homologous Superfamily
A, B, C	IPR020568	Ribosomal protein uS5 domain 2-type superfamily	Homologous Superfamily
A, B, C	IPR015847	Exoribonuclease, phosphorolytic domain 2	Domain
A, B, C	IPR003029	S1 domain	Domain
A, B, C	IPR015848	Polyribonucleotide nucleotidyltransferase, RNA-binding domain	Domain
A, B, C	IPR001247	Exoribonuclease, phosphorolytic domain 1	Domain
A, B, C	IPR036345	Exoribonuclease, PH domain 2 superfamily	Homologous Superfamily
A, B, C	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A, B, C	IPR004088	K Homology domain, type 1	Domain
D	IPR028878	Ribonuclease E	Family
D	IPR004659	Ribonuclease E/G	Family
D	IPR019307	RNA-binding protein AU-1/Ribonuclease E/G	Domain
D	IPR003029	S1 domain	Domain
D	IPR021968	Polyribonucleotide phosphorylase C-terminal	Domain
D	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
D	IPR048583	RNase E/G, thioredoxin-like domain	Domain