ID   RNPA_PSEAO              Reviewed;         116 AA.
AC   O86449;
DT   15-JUL-1999, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1998, sequence version 1.
DT   25-MAY-2022, entry version 70.
DE   RecName: Full=Ribonuclease P protein component {ECO:0000255|HAMAP-Rule:MF_00227};
DE            Short=RNase P protein {ECO:0000255|HAMAP-Rule:MF_00227};
DE            Short=RNaseP protein {ECO:0000255|HAMAP-Rule:MF_00227};
DE            EC=3.1.26.5 {ECO:0000255|HAMAP-Rule:MF_00227};
DE   AltName: Full=Protein C5 {ECO:0000255|HAMAP-Rule:MF_00227};
GN   Name=rnpA {ECO:0000255|HAMAP-Rule:MF_00227};
OS   Pseudanabaena sp. (strain PCC 6903).
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Pseudanabaenaceae;
OC   Pseudanabaena.
OX   NCBI_TaxID=102126;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Pascual A., Tous C., Vioque A.;
RT   "Sequence encoding the protein component of RNase P from the cyanobacterium
RT   Pseudanabaena sp. PCC6903.";
RL   Submitted (JUL-1997) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: RNaseP catalyzes the removal of the 5'-leader sequence from
CC       pre-tRNA to produce the mature 5'-terminus. It can also cleave other
CC       RNA substrates such as 4.5S RNA. The protein component plays an
CC       auxiliary but essential role in vivo by binding to the 5'-leader
CC       sequence and broadening the substrate specificity of the ribozyme.
CC       {ECO:0000255|HAMAP-Rule:MF_00227}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endonucleolytic cleavage of RNA, removing 5'-extranucleotides
CC         from tRNA precursor.; EC=3.1.26.5; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00227};
CC   -!- SUBUNIT: Consists of a catalytic RNA component (M1 or rnpB) and a
CC       protein subunit. {ECO:0000255|HAMAP-Rule:MF_00227}.
CC   -!- SIMILARITY: Belongs to the RnpA family. {ECO:0000255|HAMAP-
CC       Rule:MF_00227}.
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DR   EMBL; AJ000513; CAA04148.1; -; Genomic_DNA.
DR   AlphaFoldDB; O86449; -.
DR   SMR; O86449; -.
DR   GO; GO:0004526; F:ribonuclease P activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0001682; P:tRNA 5'-leader removal; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.230.10; -; 1.
DR   HAMAP; MF_00227; RNase_P; 1.
DR   InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR   InterPro; IPR014721; Ribosomal_S5_D2-typ_fold_subgr.
DR   InterPro; IPR000100; RNase_P.
DR   InterPro; IPR020539; RNase_P_CS.
DR   PANTHER; PTHR33992; PTHR33992; 1.
DR   Pfam; PF00825; Ribonuclease_P; 1.
DR   SUPFAM; SSF54211; SSF54211; 1.
DR   TIGRFAMs; TIGR00188; rnpA; 1.
DR   PROSITE; PS00648; RIBONUCLEASE_P; 1.
PE   3: Inferred from homology;
KW   Endonuclease; Hydrolase; Nuclease; RNA-binding; tRNA processing.
FT   CHAIN           1..116
FT                   /note="Ribonuclease P protein component"
FT                   /id="PRO_0000198510"
SQ   SEQUENCE   116 AA;  13353 MW;  06D99AC8F1B8D851 CRC64;
     MLPNQNRLRR REDFAKVYAK GDRYRGTYLS LKILFDSNTT YTRIGIVVSK KVSKLAVTRN
     RFKRQLRAIF RQLLSQLKDG LQIVVTVTTV ASKPNYQELG DDLKNILAKA KVLHGN