ID   MATK_CERDE              Reviewed;         515 AA.
AC   A8SE44;
DT   16-DEC-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-JAN-2008, sequence version 1.
DT   25-MAY-2022, entry version 31.
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   Ceratophyllum demersum (Rigid hornwort) (Coontail).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; Ceratophyllales; Ceratophyllaceae;
OC   Ceratophyllum.
OX   NCBI_TaxID=4428;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=18048334; DOI=10.1073/pnas.0708072104;
RA   Moore M.J., Bell C.D., Soltis P.S., Soltis D.E.;
RT   "Using plastid genome-scale data to resolve enigmatic relationships among
RT   basal angiosperms.";
RL   Proc. Natl. Acad. Sci. U.S.A. 104:19363-19368(2007).
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; EF614270; ABQ81431.1; -; Genomic_DNA.
DR   RefSeq; YP_001542428.1; NC_009962.1.
DR   AlphaFoldDB; A8SE44; -.
DR   GeneID; 5729440; -.
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..515
FT                   /note="Maturase K"
FT                   /id="PRO_0000355920"
SQ   SEQUENCE   515 AA;  60997 MW;  F70B3700599B1C86 CRC64;
     MEESHGSLEI DGSTQQDLLY PLFFQEYIYA FVHDHGLNVN GSIIYEPMEN LGYDKKSSSL
     SVKRLISRMH QQNHFLFSVN DSKQNRFVVH KNRSDFQMIS QGFTVILEIP FSLQKVNILE
     EKKIEKFHNL RSIHAIFPFL EDKISHLIYV SDILIPYPVH LEILVQTLYC CIQDAPSLHF
     LRFFLQEYRN WNSFITPKRA SSFFSKENQR LFLFLYNSHV YICESIFVFL HKQCSHHFRS
     TSFGAFLERT LFYGKIEHLV VVVVLRNDFQ KSLGFYKDPF MHYVRYQGKS ILAAKGTHFL
     MKKWKTHLMH FWQCNFHLWA QPDRIRINQF SKHSLDLMGY LSRLRLNRLV VRNQMLEHFF
     IIDIPIKKFD SIVPILPLIG SLAKAKFCNV SGHPISKPIR ADSSDSDILD RFGRICRNLS
     HYHSGSSKKK SLYRVKYILR LSCARTLARK HKSTVRAFLK RLGSEFLEEF LTEEEQVLSL
     ILSKTYLASH RSHKERIWYL DIIRINDLVN FEFKD