ID   MATK_HORVU              Reviewed;         511 AA.
AC   P17158; A1E9H2;
DT   01-AUG-1990, integrated into UniProtKB/Swiss-Prot.
DT   14-OCT-2008, sequence version 4.
DT   25-MAY-2022, entry version 92.
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}; Synonyms=ycf14;
OS   Hordeum vulgare (Barley).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC   Pooideae; Triticodae; Triticeae; Hordeinae; Hordeum.
OX   NCBI_TaxID=4513;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8541499; DOI=10.1007/bf00041163;
RA   Ems S.C., Morden C.W., Dixon C.K., Wolfe K.H., dePamphilis C.W.,
RA   Palmer J.D.;
RT   "Transcription, splicing and editing of plastid RNAs in the
RT   nonphotosynthetic plant Epifagus virginiana.";
RL   Plant Mol. Biol. 29:721-733(1995).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Morex;
RX   PubMed=17534593; DOI=10.1007/s00122-007-0567-4;
RA   Saski C., Lee S.-B., Fjellheim S., Guda C., Jansen R.K., Luo H.,
RA   Tomkins J., Rognli O.A., Daniell H., Clarke J.L.;
RT   "Complete chloroplast genome sequences of Hordeum vulgare, Sorghum bicolor
RT   and Agrostis stolonifera, and comparative analyses with other grass
RT   genomes.";
RL   Theor. Appl. Genet. 115:571-590(2007).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-354.
RC   TISSUE=Seedling;
RX   PubMed=1694111; DOI=10.1007/bf00334526;
RA   Sexton T.B., Jones J.T., Mullet J.E.;
RT   "Sequence and transcriptional analysis of the barley ctDNA region upstream
RT   of psbD-psbC encoding trnK(UUU), rps16, trnQ(UUG), psbK, psbI, and
RT   trnS(GCU).";
RL   Curr. Genet. 17:445-454(1990).
RN   [4]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 355-504.
RC   STRAIN=cv. Morex;
RX   PubMed=3419912; DOI=10.1093/nar/16.16.8184;
RA   Boyer S.K., Mullet J.E.;
RT   "Sequence and transcript map of barley chloroplast psbA gene.";
RL   Nucleic Acids Res. 16:8184-8184(1988).
RN   [5]
RP   RNA EDITING, AND PROBABLE ROLE IN GROUP II INTRON SPLICING.
RC   STRAIN=cv. Albostrians;
RX   PubMed=9236120; DOI=10.1006/jmbi.1997.1115;
RA   Vogel J., Huebschmann T., Boerner T., Hess W.R.;
RT   "Splicing and intron-internal RNA editing of trnK-matK transcripts in
RT   barley plastids: support for MatK as an essential splice factor.";
RL   J. Mol. Biol. 270:179-187(1997).
CC   -!- FUNCTION: Usually encoded in the trnK tRNA gene intron. Probably
CC       assists in splicing its own and other chloroplast group II introns
CC       (Probable). {ECO:0000305}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast.
CC   -!- RNA EDITING: Modified_positions=420 {ECO:0000269|PubMed:9236120};
CC       Note=Occurs in the presence and absence of plastid ribosomes.;
CC   -!- SIMILARITY: Belongs to the intron maturase 2 family. MatK subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_01390}.
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DR   EMBL; X64129; CAA45481.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; EF115541; ABK79394.1; ALT_SEQ; Genomic_DNA.
DR   EMBL; X52765; CAA36972.1; -; Genomic_DNA.
DR   EMBL; X07942; CAA30762.1; ALT_SEQ; Genomic_DNA.
DR   PIR; S01291; S01291.
DR   PIR; S28765; S28765.
DR   PIR; S49151; S49151.
DR   AlphaFoldDB; P17158; -.
DR   IntAct; P17158; 1.
DR   ExpressionAtlas; P17158; differential.
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..511
FT                   /note="Maturase K"
FT                   /id="PRO_0000143425"
FT   CONFLICT        109..154
FT                   /note="IPFSLRELSCPKEKEIPKFQNLRSIHSIFPFLEDKFLHLDYLSHIE -> NI
FT                   ILATGIILSERKRNTKVSEFTLYSFNISLFRRQIFAFGLSITYR (in Ref. 3;
FT                   CAA36972)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        494..511
FT                   /note="RIWYLDIIGINDLVNPLN -> PYLVFGYYRYQ (in Ref. 4;
FT                   CAA30762)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   511 AA;  61353 MW;  41809CFC4653080A CRC64;
     MEKFEGYSEK QKSRQQYFVY PLLFQEYIYA FAHDYGLNGS EPVEIVSWNN KKFSSLLVKR
     LIIRMYQQNF LDNSVNHPNQ DRLLDYKIFF YSEFYSQILS EGFAIVVEIP FSLRELSCPK
     EKEIPKFQNL RSIHSIFPFL EDKFLHLDYL SHIEIPYPIH LEILVQLLQY RIQDVPSLHL
     LRFFLNYYSN WNSFITSMKS ILFFQKENKR LVKFLYNSYV SEYEFFLLFL RKQSSCLPLA
     YSGTFLERIH FSRKMEHFGI MYPGFSRKTL WFFMDPLIHY VRYQGKAILA SKGSFFLKKK
     WKCYLINFWQ YYFFFWTQPR RIHINQLANS CFDFMGYLSS VPKSPLLVRN QMLENSFLID
     TRMKKFDTIV PATLLIGYLS KAQFCTGSGH PISKPIWTDL SDWDILDRFG RICRNLFHYY
     SGSSKKRTLY RLKYILRLSC ARTLARKHKS TVRTFMQRLG SAFLEEFFTE EEQVFSLMFT
     KTTLFSFSGS HTERIWYLDI IGINDLVNPL N