ID   MATK_WELMI              Reviewed;         524 AA.
AC   Q8MEW9; B2Y1U4; B7ZHZ5;
DT   21-JUN-2005, integrated into UniProtKB/Swiss-Prot.
DT   22-JUL-2008, sequence version 2.
DT   25-MAY-2022, entry version 58.
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   Welwitschia mirabilis (Tree tumbo) (Welwitschia bainesii).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Gnetopsida; Gnetidae; Welwitschiales; Welwitschiaceae;
OC   Welwitschia.
OX   NCBI_TaxID=3377;
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.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=18452621; DOI=10.1186/1471-2148-8-130;
RA   McCoy S.R., Kuehl J.V., Boore J.L., Raubeson L.A.;
RT   "The complete plastid genome sequence of Welwitschia mirabilis: an
RT   unusually compact plastome with accelerated divergence rates.";
RL   BMC Evol. Biol. 8:130-130(2008).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=19018585; DOI=10.1007/s00239-008-9180-7;
RA   Cai Z., Guisinger M., Kim H.-G., Ruck E., Blazier J.C., McMurtry V.,
RA   Kuehl J.V., Boore J., Jansen R.K.;
RT   "Extensive reorganization of the plastid genome of Trifolium subterraneum
RT   (Fabaceae) is associated with numerous repeated sequences and novel DNA
RT   insertions.";
RL   J. Mol. Evol. 67:696-704(2008).
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=BAH11175.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AF280996; AAK69135.1; -; Genomic_DNA.
DR   EMBL; EU342371; ABY26774.1; -; Genomic_DNA.
DR   EMBL; AP009568; BAH11175.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; YP_001876561.1; NC_010654.1.
DR   AlphaFoldDB; Q8MEW9; -.
DR   GeneID; 6276182; -.
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..524
FT                   /note="Maturase K"
FT                   /id="PRO_0000143789"
SQ   SEQUENCE   524 AA;  63023 MW;  4239A9A91BEEF1F8 CRC64;
     MGNFYRKNIE ILGQQRFLYP LLFQDEFYAI AQNLFSNPRA SVEVREEICK NCNSFSFFTV
     KRLIFKIRKR NVFLESKNKN SISLALIAEG LTLGLDVFFS AQWKRFVDGE GGTEQLSFQS
     IHSIFAYLDE TTPYSFSSLG IRIPSYVHPE LFIRMFNCLC WIDDVCFLHL LSSMLCFLKH
     LTILDKFIFF NSKGFIRLVL FLWNIFVSKG ESSKISLWKQ KCYRAKFKSF GSFAEQTHFH
     RKMKLKNPKI KAHEKFSEVF FFSHYSRFGE KSVLIGTPIL IKKYRYFFCH FWQTSFFFSE
     TYGLFVHEFS RKNISLIGYS FYFQNHRTFF RIKMFYDFFF TELVNNEFHP KFGIISIMKF
     LSIEGFCDIM GRPISKLSWT CFTDDDIFDK CDRFWKILYY YYCGAKNKAY LDRIKYILLL
     SCFKTIAFKH KSTIRVVRKE FDFELRKKFF PKEIEFERDF LCSRFAQKFK KWLLKINLAT
     ERFWLLNILK VHFLTKSWHK DQDALDFCLI VEKNNILPML NNFL