Protein: Protein HESO1 (EC 2.7.7.52) (HEN1 suppressor 1) (RNA uridylyltransferase) (Q5XET5)
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Uridylates small RNAs to trigger their degradation. Catalyzes the uridylation of 5' fragments produced by AGO1-mediated cleavage of miRNA target RNAs. Acts synergistically with URT1 in unmethylated miRNA uridylation, leading to their degradation. URT1 and HESO1 prefer substrates with different 3' end nucleotides and act cooperatively to tail different forms of the same miRNAs. URT1 and HESO1 act sequentially, with URT1 mono-uridylating the miRNAs followed by their further uridylation by HESO1. URT1 and HESO1 are involved in the uridylation and clearance of RISC-generated 5' mRNA fragments. Able to act on AGO1-bound miRNAs and the uridylated species stay associated with AGO1.
Subcellular location: Cytoplasm {ECO:0000269|PubMed:22464191}. Cytoplasm, P-body {ECO:0000269|PubMed:25928341}. Nucleus {ECO:0000269|PubMed:22464191, ECO:0000269|PubMed:25928341}.
Sequence: MSRNPFLDPTLQEILQVIKPTRADRDTRITVIDQLRDVLQSVECLRGATVQPFGSFVSNLFTRWGDLDISVDLFSGSSILFTGKKQKQTLLGHLLRALRASGLWYKLQFVIHARVPILKVVSGHQRISCDISIDNLDGLLKSRFLFWISEIDGRFRDLVLLVKEWAKAHNINDSKTGTFNSYSLSLLVIFHFQTCVPAILPPLRVIYPKSAVDDLTGVRKTAEESIAQVTAANIARFKSERAKSVNRSSLSELLVSFFAKFSDINVKAQEFGVCPFTGRWETISSNTTWLPKTYSLFVEDPFEQPVNAARSVSRRNLDRIAQVFQITSRRLVSECNRNSIIGILTGQHIQESLYRTISLPSQHHANGMHNVRNLHGQARPQNQQMQQNWSQSYNTPNPPHWPPLTQSRPQQNWTQNNPRNLQGQPPVQGQTWPVITQTQTQQKSPYKSGNRPLKNTSAGSSQNQGHIGKPSGHMNGVNSARPAYTNGVNSARPPSKIPSQGGQIWRPRHEQ
InterPro domains: - IPR043519: Nucleotidyltransferase superfamily (homologous_superfamily) [7-151]
- IPR054708: Poly(A) RNA polymerase, mitochondrial-like, central palm domain (domain) [10-145]
Interaction partners: - Small RNA degrading nuclease 1
- Protein argonaute 1
- Small RNA 2'-O-methyltransferase
- Inactive exonuclease DIS3L2
- Protein argonaute 10
- Small RNA degrading nuclease 2
- Endoribonuclease Dicer homolog 1
- DnaA initiator-associating protein
- Small RNA degrading nuclease 5
- Protein HASTY 1
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:1901363 (heterocyclic compound binding), GO:0140640 (catalytic activity, acting on a nucleic acid), GO:0097159 (organic cyclic compound binding), GO:0005515 (protein binding), GO:0003676 (nucleic acid binding), GO:0140098 (catalytic activity, acting on RNA), GO:0016772 (transferase activity, transferring phosphorus-containing groups), GO:0016779 (nucleotidyltransferase activity), GO:0003723 (RNA binding), GO:0061980 (regulatory RNA binding), GO:0070569 (uridylyltransferase activity), GO:0035198 (miRNA binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0065007 (biological regulation), GO:0050789 (regulation of biological process), GO:0022414 (reproductive process), GO:0032502 (developmental process), GO:0009987 (cellular process), GO:0048519 (negative regulation of biological process), GO:0000003 (reproduction), GO:0032501 (multicellular organismal process), GO:0048856 (anatomical structure development), GO:0007275 (multicellular organism development), GO:0044237 (cellular metabolic process), GO:0019222 (regulation of metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0071704 (organic substance metabolic process), GO:0003006 (developmental process involved in reproduction), GO:0009056 (catabolic process), GO:0044238 (primary metabolic process), GO:0009892 (negative regulation of metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:0006139 (nucleobase-containing compound metabolic process), GO:0046483 (heterocycle metabolic process), GO:0010605 (negative regulation of macromolecule metabolic process), GO:0044248 (cellular catabolic process), GO:0048731 (system development), GO:0060255 (regulation of macromolecule metabolic process), GO:0048608 (reproductive structure development), GO:0006725 (cellular aromatic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:1901575 (organic substance catabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0010228 (vegetative to reproductive phase transition of meristem), GO:0034655 (nucleobase-containing compound catabolic process), GO:0061458 (reproductive system development), GO:0009057 (macromolecule catabolic process), GO:0044270 (cellular nitrogen compound catabolic process), GO:0090304 (nucleic acid metabolic process), GO:0044265 (cellular macromolecule catabolic process), GO:0019439 (aromatic compound catabolic process), GO:1901361 (organic cyclic compound catabolic process), GO:0046700 (heterocycle catabolic process), GO:0010629 (negative regulation of gene expression), GO:0010468 (regulation of gene expression), GO:0016070 (RNA metabolic process), GO:0006402 (mRNA catabolic process), GO:0006401 (RNA catabolic process), GO:0016071 (mRNA metabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005829 (cytosol), GO:0005737 (cytoplasm), GO:0031974 (membrane-enclosed lumen), GO:0043233 (organelle lumen), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043228 (non-membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0031981 (nuclear lumen), GO:0005730 (nucleolus), GO:0005634 (nucleus)