ID   MATK_NICSY              Reviewed;         509 AA.
AC   Q76MT0; Q3C1G2;
DT   21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   25-MAY-2022, entry version 55.
DE   RecName: Full=Maturase K {ECO:0000255|HAMAP-Rule:MF_01390};
DE   AltName: Full=Intron maturase {ECO:0000255|HAMAP-Rule:MF_01390};
GN   Name=matK {ECO:0000255|HAMAP-Rule:MF_01390};
OS   Nicotiana sylvestris (Wood tobacco) (South American tobacco).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Nicotianoideae; Nicotianeae;
OC   Nicotiana.
OX   NCBI_TaxID=4096;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Aoki S., Ito M.;
RT   "Molecular phylogeny of Nicotiana (Solanaceae) based on the nucleotide
RT   sequence of the matK gene.";
RL   Plant Biol. 2:316-324(2000).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16435119; DOI=10.1007/s00438-005-0092-6;
RA   Yukawa M., Tsudzuki T., Sugiura M.;
RT   "The chloroplast genome of Nicotiana sylvestris and Nicotiana
RT   tomentosiformis: complete sequencing confirms that the Nicotiana sylvestris
RT   progenitor is the maternal genome donor of Nicotiana tabacum.";
RL   Mol. Genet. Genomics 275:367-373(2006).
CC   -!- FUNCTION: Usually encoded in the trnK tRNA gene intron. Probably
CC       assists in splicing its own and other chloroplast group II introns.
CC       {ECO:0000255|HAMAP-Rule:MF_01390}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC   -!- SIMILARITY: Belongs to the intron maturase 2 family. MatK subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01390}.
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DR   EMBL; AB039998; BAB64849.1; -; Genomic_DNA.
DR   EMBL; AB237912; BAE46627.1; -; Genomic_DNA.
DR   RefSeq; YP_358652.1; NC_007500.1.
DR   AlphaFoldDB; Q76MT0; -.
DR   GeneID; 3735057; -.
DR   KEGG; nsy:3735057; -.
DR   Proteomes; UP000189701; Chloroplast Pltd.
DR   GO; GO:0009507; C:chloroplast; IEA:UniProtKB-SubCell.
DR   GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0006397; P:mRNA processing; IEA:UniProtKB-KW.
DR   GO; GO:0008380; P:RNA splicing; IEA:UniProtKB-UniRule.
DR   GO; GO:0008033; P:tRNA processing; IEA:UniProtKB-KW.
DR   HAMAP; MF_01390; MatK; 1.
DR   InterPro; IPR024937; Domain_X.
DR   InterPro; IPR002866; Maturase_MatK.
DR   InterPro; IPR024942; Maturase_MatK_N.
DR   PANTHER; PTHR34811; PTHR34811; 1.
DR   Pfam; PF01348; Intron_maturas2; 1.
DR   Pfam; PF01824; MatK_N; 1.
PE   3: Inferred from homology;
KW   Chloroplast; mRNA processing; Plastid; Reference proteome; RNA-binding;
KW   tRNA processing.
FT   CHAIN           1..509
FT                   /note="Maturase K"
FT                   /id="PRO_0000143547"
SQ   SEQUENCE   509 AA;  60178 MW;  82484662C0851C28 CRC64;
     MEEIQRYLQP DRSQQHNFLY PLIFQEYIYA LAHDHGLNRN RSILLENPGY NNKLSFLIVK
     RLITRMYQQN HFLISTNDSN KNSFLGCNKS LYSQMISEGF AFIVEIPFSL RLISSLSSFE
     GKKIFKSYNL RSIHSTFPFL EDNFSHLNYV LDILIPYPVH LEILVQTLRY WVKDASSLHL
     LRFFLHEFWN LNSLITSKKP GYSFSKKNQR FFFFLYNSYV YECESTFVFL RNQSSHLRST
     SFGALLERIY FYGKIERLVE VFAKDFQVTL WLFKDPFMHY VRYQGKSILA SKGTFLLMNK
     WKFYLVNFWQ CHCSLCFHTG RIHINQLSNH SRDFMGYLSS VRLNPSMVRS QMLENSFLIN
     NAIKKFDTLV PIIPLIGSLA KANFCTVLGH PISKPVWSDL SDSDIIDRFG RICRNLFHYY
     SGSSKKKTLY RIKYILRLSC ARTLARKHKS TVRTFLKRSG SELLEEFLTS EEQVLSLTFP
     RASSSLWGVY RSRIWYLDIF CINDLANYQ