ID   ENDA_HALS3              Reviewed;         343 AA.
AC   B0R7C0;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 78.
DE   RecName: Full=tRNA-splicing endonuclease {ECO:0000255|HAMAP-Rule:MF_01834};
DE            EC=4.6.1.16 {ECO:0000255|HAMAP-Rule:MF_01834};
DE   AltName: Full=tRNA-intron endonuclease {ECO:0000255|HAMAP-Rule:MF_01834};
GN   Name=endA {ECO:0000255|HAMAP-Rule:MF_01834}; OrderedLocusNames=OE_4102R;
OS   Halobacterium salinarum (strain ATCC 29341 / DSM 671 / R1).
OC   Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Halobacteriales;
OC   Halobacteriaceae; Halobacterium.
OX   NCBI_TaxID=478009;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29341 / DSM 671 / R1;
RX   PubMed=18313895; DOI=10.1016/j.ygeno.2008.01.001;
RA   Pfeiffer F., Schuster S.C., Broicher A., Falb M., Palm P., Rodewald K.,
RA   Ruepp A., Soppa J., Tittor J., Oesterhelt D.;
RT   "Evolution in the laboratory: the genome of Halobacterium salinarum strain
RT   R1 compared to that of strain NRC-1.";
RL   Genomics 91:335-346(2008).
CC   -!- FUNCTION: Endonuclease that removes tRNA introns. Cleaves pre-tRNA at
CC       the 5' and 3' splice sites to release the intron. The products are an
CC       intron and two tRNA half-molecules bearing 2',3' cyclic phosphate and
CC       5'-OH termini. Recognizes a pseudosymmetric substrate in which 2 bulged
CC       loops of 3 bases are separated by a stem of 4 bp. {ECO:0000255|HAMAP-
CC       Rule:MF_01834}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=pretRNA = a 3'-half-tRNA molecule with a 5'-OH end + a 5'-
CC         half-tRNA molecule with a 2',3'-cyclic phosphate end + an intron with
CC         a 2',3'-cyclic phosphate and a 5'-hydroxyl terminus.; EC=4.6.1.16;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01834};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01834}.
CC   -!- SIMILARITY: Belongs to the tRNA-intron endonuclease family. Archaeal
CC       long subfamily. {ECO:0000255|HAMAP-Rule:MF_01834}.
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DR   EMBL; AM774415; CAP14639.1; -; Genomic_DNA.
DR   RefSeq; WP_010903640.1; NC_010364.1.
DR   AlphaFoldDB; B0R7C0; -.
DR   SMR; B0R7C0; -.
DR   EnsemblBacteria; CAP14639; CAP14639; OE_4102R.
DR   GeneID; 5954436; -.
DR   KEGG; hsl:OE_4102R; -.
DR   HOGENOM; CLU_791347_0_0_2; -.
DR   OMA; GADFRTY; -.
DR   PhylomeDB; B0R7C0; -.
DR   Proteomes; UP000001321; Chromosome.
DR   GO; GO:0016829; F:lyase activity; IEA:UniProtKB-KW.
DR   GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR   GO; GO:0000213; F:tRNA-intron endonuclease activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006388; P:tRNA splicing, via endonucleolytic cleavage and ligation; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.1350.10; -; 2.
DR   HAMAP; MF_01834; EndA_long; 1.
DR   InterPro; IPR011856; tRNA_endonuc-like_dom_sf.
DR   InterPro; IPR036167; tRNA_intron_Endo_cat-like_sf.
DR   InterPro; IPR006677; tRNA_intron_Endonuc_cat-like.
DR   InterPro; IPR006678; tRNA_intron_Endonuc_N.
DR   InterPro; IPR036740; tRNA_intron_Endonuc_N_sf.
DR   InterPro; IPR006676; tRNA_splic.
DR   InterPro; IPR023516; tRNA_splic_arch_long.
DR   PANTHER; PTHR21227; PTHR21227; 1.
DR   Pfam; PF01974; tRNA_int_endo; 1.
DR   Pfam; PF02778; tRNA_int_endo_N; 2.
DR   SUPFAM; SSF53032; SSF53032; 2.
DR   SUPFAM; SSF55267; SSF55267; 2.
DR   TIGRFAMs; TIGR00324; endA; 1.
PE   3: Inferred from homology;
KW   Lyase; tRNA processing.
FT   CHAIN           1..343
FT                   /note="tRNA-splicing endonuclease"
FT                   /id="PRO_1000188344"
FT   ACT_SITE        277
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01834"
FT   ACT_SITE        288
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01834"
FT   ACT_SITE        319
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01834"
SQ   SEQUENCE   343 AA;  37872 MW;  E84404AC0C317CA8 CRC64;
     MDGDLRGDTV HIGGDARQRF HDARGYGYPL GGNDIAVSLV EAAHLLFRGD LDSVDGMGFR
     AFLTDREAGF AARFLVYVDL RDRGFYLVPD RDPWWRDPGD GDFVVFPRGN TRRDGVVKHR
     VRVVDERTTL PVDGLSESVL AVVDEESEIT YLDIAPETPT GETTLDRPTD VPGVLLDDRV
     LVWEPPQRLH NAGFYGQPLG GRAADHDALQ LSLVEAAYLI DAGVLRLTDA TIDDVRARGR
     LGEGEHFDCR LAVYRALRDA GAVPKTGFKF GADFRVYSAV SSVDDLGHSE LLVRVITDTH
     VFSPGDLSLD VRLAHGVRKR MVFAATDDTD DTIRWLSVSR LTP