ID   MATK_ADICA              Reviewed;         500 AA.
AC   Q85FP0;
DT   05-JUL-2005, integrated into UniProtKB/Swiss-Prot.
DT   16-AUG-2004, sequence version 2.
DT   03-AUG-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   Adiantum capillus-veneris (Maidenhair fern).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Polypodiopsida; Polypodiidae; Polypodiales; Pteridineae; Pteridaceae;
OC   Vittarioideae; Adiantum.
OX   NCBI_TaxID=13818;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=12755170; DOI=10.1093/dnares/10.2.59;
RA   Wolf P.G., Rowe C.A., Sinclair R.B., Hasebe M.;
RT   "Complete nucleotide sequence of the chloroplast genome from a
RT   leptosporangiate fern, Adiantum capillus-veneris L.";
RL   DNA Res. 10:59-65(2003).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND RNA EDITING.
RC   TISSUE=Frond;
RX   PubMed=15363849; DOI=10.1016/j.gene.2004.06.018;
RA   Wolf P.G., Rowe C.A., Hasebe M.;
RT   "High levels of RNA editing in a vascular plant chloroplast genome:
RT   analysis of transcripts from the fern Adiantum capillus-veneris.";
RL   Gene 339:89-97(2004).
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   -!- RNA EDITING: Modified_positions=1 {ECO:0000269|PubMed:15363849}, 165
CC       {ECO:0000269|PubMed:15363849}, 333 {ECO:0000269|PubMed:15363849}, 334
CC       {ECO:0000269|PubMed:15363849}; Note=The initiator methionine is created
CC       by RNA editing.;
CC   -!- SIMILARITY: Belongs to the intron maturase 2 family. MatK subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01390}.
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DR   EMBL; AY178864; AAP29371.2; -; Genomic_DNA.
DR   RefSeq; NP_848039.1; NC_004766.1.
DR   AlphaFoldDB; Q85FP0; -.
DR   PRIDE; Q85FP0; -.
DR   GeneID; 807363; -.
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   2: Evidence at transcript level;
KW   Chloroplast; mRNA processing; Plastid; RNA editing; RNA-binding;
KW   tRNA processing.
FT   CHAIN           1..500
FT                   /note="Maturase K"
FT                   /id="PRO_0000143213"
SQ   SEQUENCE   500 AA;  58261 MW;  FA089674151D4A22 CRC64;
     MKVNYGSPAK SGPLHKNGEF YINKNCFLHP LLFLSEENFY LTDGKRRSHG ADANLVFGAW
     STVAVKRLIG SVRDPNLNFL KIYDSVSVRN LTDGLDVDLY LHPLLKMTYL ILGIALFPKI
     RAETSSKSKM LQSIHSMFLF LEDRFSKSNH ILEADLPHNL HLETLIRLFR RQIKDVSFLH
     LLRIVFRKRK IFCGKTFYSP GGGQDGSVDI PVRNFYIFEI DSLLLIPWKQ VYKFRVNYLS
     PIDSCNIIRK EIYASAYKFK WNKASIDYSF SRSLWIHYGR WRNKFLIASE GTHYFVKKML
     YYLWILLKYH FHYRIKSNEP WIRKLLPTSC VSFLGYTLLA QLVSKNVRIE TVTDLYISIL
     GGKKFYPKIP NSIIITTLAK QRFCDFTGRP IGKSAWVTST DDKIIDGYVQ LWQVFSLYYG
     ASMNQYRLRR LIFLLQMSCD STLAGKHRST IRLLRCKSNV EALNQILASR KFELSSSRRV
     WRSSSIRSVL VQFTVLDIGL