ID   MATK_CERME              Reviewed;         499 AA.
AC   Q8MEY4;
DT   25-MAR-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   25-MAY-2022, entry version 47.
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   Ceratozamia mexicana (Mexican horncone).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Cycadidae; Cycadales; Zamiaceae; Ceratozamia.
OX   NCBI_TaxID=41994;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Chaw S.-M., Hu S.-H.;
RT   "Chloroplast matK sequence data reconfirm the monophyly of extant
RT   gymnosperms and the coniferophytic origin of Gnetales.";
RL   Submitted (JUN-2000) to the EMBL/GenBank/DDBJ databases.
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; AF279794; AAK69117.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8MEY4; -.
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; RNA-binding; tRNA processing.
FT   CHAIN           1..499
FT                   /note="Maturase K"
FT                   /id="PRO_0000143320"
SQ   SEQUENCE   499 AA;  59649 MW;  2127CADAFCC397DE CRC64;
     MDKLQRDGKE DTSRQRRFLY LLLFQEDLYA IAYDHYFNRS SSFEPMENSS SNDRFSFLTV
     KRSISRIRQQ NGSIIPFVNC DQNRLVGHSR SFYSELVLGG LTAVPEVPFS IRSKHSLEGM
     NEWTSFRSIN SIFPLMEDKI PHSNFLLDIQ IPHLTHPEIL VRTFRRWIQD APFLNLLRSV
     LHEHRNLTIS SNLDQLILIA SKENKRLSLF LWNYYAYECE SLLVPLWKRF SHSRSLPYES
     FIERTPFYQK IKNIVIFYHK YIKKSLWFLK DPSIHYVKYR ERSIIALRGT YLLVKKWRYH
     LTNFWQCHFH LWLQPYRIYI DEFSNNCFSL LGYLLSVKMK TSVVRIRMLD DSFITHLITK
     EFDPIAPTTL LIRSLAKERF CDISGHPISR LAWTGLTDDD ILDRFDRIWR NIFHYHSGSS
     KKDGLYRMKY ILRLPCAKTL ACKHKSTIRV VRERFGSELF TKSFPKERES ILLPFSKTRS
     QRERIWHSDI IQRNPLVNS