ID   ORN_BUCAI               Reviewed;         184 AA.
AC   P57637;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2000, sequence version 1.
DT   25-MAY-2022, entry version 101.
DE   RecName: Full=Oligoribonuclease {ECO:0000255|HAMAP-Rule:MF_00045};
DE            EC=3.1.15.- {ECO:0000255|HAMAP-Rule:MF_00045};
GN   Name=orn {ECO:0000255|HAMAP-Rule:MF_00045}; OrderedLocusNames=BU574;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon
OS   pisum symbiotic bacterium).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=107806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=APS;
RX   PubMed=10993077; DOI=10.1038/35024074;
RA   Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H.;
RT   "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera
RT   sp. APS.";
RL   Nature 407:81-86(2000).
CC   -!- FUNCTION: 3'-to-5' exoribonuclease specific for small
CC       oligoribonucleotides. {ECO:0000255|HAMAP-Rule:MF_00045}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00045}.
CC   -!- SIMILARITY: Belongs to the oligoribonuclease family.
CC       {ECO:0000255|HAMAP-Rule:MF_00045}.
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DR   EMBL; BA000003; BAB13264.1; -; Genomic_DNA.
DR   RefSeq; NP_240378.1; NC_002528.1.
DR   RefSeq; WP_010896170.1; NC_002528.1.
DR   AlphaFoldDB; P57637; -.
DR   SMR; P57637; -.
DR   STRING; 107806.10039230; -.
DR   EnsemblBacteria; BAB13264; BAB13264; BAB13264.
DR   KEGG; buc:BU574; -.
DR   PATRIC; fig|107806.10.peg.578; -.
DR   eggNOG; COG1949; Bacteria.
DR   HOGENOM; CLU_064761_2_0_6; -.
DR   OMA; AFFHYRN; -.
DR   Proteomes; UP000001806; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000175; F:3'-5'-exoribonuclease activity; IEA:InterPro.
DR   GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR   CDD; cd06135; Orn; 1.
DR   Gene3D; 3.30.420.10; -; 1.
DR   HAMAP; MF_00045; Oligoribonuclease; 1.
DR   InterPro; IPR013520; Exonuclease_RNaseT/DNA_pol3.
DR   InterPro; IPR022894; Oligoribonuclease.
DR   InterPro; IPR012337; RNaseH-like_sf.
DR   InterPro; IPR036397; RNaseH_sf.
DR   PANTHER; PTHR11046; PTHR11046; 1.
DR   Pfam; PF00929; RNase_T; 1.
DR   SMART; SM00479; EXOIII; 1.
DR   SUPFAM; SSF53098; SSF53098; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Exonuclease; Hydrolase; Nuclease; Reference proteome.
FT   CHAIN           1..184
FT                   /note="Oligoribonuclease"
FT                   /id="PRO_0000111022"
FT   DOMAIN          8..171
FT                   /note="Exonuclease"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00045"
FT   ACT_SITE        129
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00045"
SQ   SEQUENCE   184 AA;  22213 MW;  AE0A1E095328DF22 CRC64;
     MKINKKNLIW IDLEMTGLNP KVHRIIEIAT LITDTNLNII AEGPVIPIYQ KKEHILVMDE
     WNKRIHENNG LIKRVEKSLY NEQKAEHETI LFLKKWVPIQ VSPMCGNSIA QDRRFLFQYM
     PHLENYFHYR YIDVSTIKEL AYRWNPSILD KFKKNHYHKA LEDIRESVVE LNFYKKNFLK
     FKKK