ID   MATK_EQUAR              Reviewed;         476 AA.
AC   Q49U13;
DT   22-NOV-2005, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2005, sequence version 1.
DT   25-MAY-2022, entry version 39.
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   Equisetum arvense (Field horsetail) (Common horsetail).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Polypodiopsida; Equisetidae; Equisetales; Equisetaceae; Equisetum.
OX   NCBI_TaxID=3258;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Hausner G., Zimmerly S.;
RT   "MatK and group II intron ORF evolution.";
RL   Submitted (JUL-2003) 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; AY348551; AAR06929.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q49U13; -.
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..476
FT                   /note="Maturase K"
FT                   /id="PRO_0000143375"
SQ   SEQUENCE   476 AA;  57657 MW;  777B5E98186DE961 CRC64;
     MKITDKKLLL FENISKKVTY QQRFLYPLLF HKEFYVVTSD SFIDKSNMNL SKEFVLNDRY
     SFLVIRRLIN RIRNLNNSKK FIQTSLSDKS ICSKLDFYLL KALNMVLETF LLIQSEQTKK
     RVNWKSYKSI FSTCSFVEEK FIFSNQILDL KIPHFIHPES FIRILRQQIK DASFLHLTRF
     FVHEYKERSK NEKLIYSFNK RNKFVTFSWN FFYIFELEFF LTSLLTRFIN NLVLSNLFDQ
     INLLEKINNN NKSQFFLSEK RIYNQNSCIH YVRYQNHCIM ASEGFYFHDT NWIYYILNIW
     QFFMHLWIQP FRFSTKHFQK QSFFFLGYQF GRESKLLKVR SISLDKSPTI YSRLKKNLLK
     TQIVYPIDFL AKEGFCDISG YPISRSTWTT STDEEILLNF NKIWKSFYFY YGGLIKKDIL
     YRIKYILRFS CAKTLARKHK STTRVVWKKI VSDLSLSSSL RRKKNFHFVF FQGSHG