ID   MATK_STAER              Reviewed;         503 AA.
AC   Q8MEX5;
DT   21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   25-MAY-2022, entry version 52.
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   Stangeria eriopus (Natal grass cycad) (Lomaria eriopus).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Cycadidae; Cycadales; Zamiaceae; Stangeria.
OX   NCBI_TaxID=34343;
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; AF279803; AAK69126.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8MEX5; -.
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..503
FT                   /note="Maturase K"
FT                   /id="PRO_0000143722"
SQ   SEQUENCE   503 AA;  60589 MW;  09C26D0042E29D53 CRC64;
     MDKLKRDVKE ETSRQPCFLY PLLFQEDLYA IAYDRHFNRS SSFEPMEDSS YNNRFSFITV
     KRSISRIRQQ NGSIIPFVNC DQNQLVGHNR SFYYELVLGG FTAVLEVPFS IRSKHYIEGM
     NEWTSFRSIN SIFPLMEDKI PHSNYLLEIR IPYLIHPEIL VRTFRRWIQD APFLHSLRSV
     LHEHRNLIIS SNLDQLTLIA SKEKKRLSLF LWNYYAYECE SLLVPLWKRF YHSRSLSYES
     FIERTPFYRK IEHIDIFSHK YKHLKKSIWF LKDPSIHYMR YRESSIIALR GTYLLVKKWR
     YHLTNLWQCH FHLWLRPYRI YIDELSKTNN CFYFLGYLLS VKMKTSVVQI RMLDDSFITD
     LITKEFDPIA PTTLLIGSWA KEKFGDISGR PISRLAWTGL TDNDILDRFD RIWRNIFHYY
     RGSSKKDGLY RIKYILRLSC AKTLACKHKS TIRVVRERFG SELFTKSFPK ERESIFLSFS
     KIRSQRERIW HSDIIQRNFL VNS