ID   MATK_ACEPS              Reviewed;         517 AA.
AC   Q8SE90; Q8SLH3; Q8SLH5;
DT   17-JAN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2002, sequence version 1.
DT   25-MAY-2022, entry version 55.
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   Acer pseudoplatanus (Sycamore maple).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Sapindales; Sapindaceae; Hippocastanoideae; Acereae; Acer.
OX   NCBI_TaxID=4026;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=Isolate 13b AP 11, Isolate 14 AP 37, Isolate 18 AP 02,
RC   Isolate 20 AP 01, and Isolate 22 AP 01;
RA   Bittkau C., Mueller-Starck G.;
RT   "Chloroplast DNA polymorphism observed in European populations of Acer
RT   pseudoplatanus L.: inferences on glacial refugia and reimmigration
RT   routes.";
RL   Submitted (MAR-2002) 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; AJ438780; CAD27624.1; -; Genomic_DNA.
DR   EMBL; AJ438782; CAD27626.1; -; Genomic_DNA.
DR   EMBL; AJ438783; CAD27627.1; -; Genomic_DNA.
DR   EMBL; AJ438784; CAD27628.1; -; Genomic_DNA.
DR   EMBL; AJ438785; CAD27629.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8SE90; -.
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..517
FT                   /note="Maturase K"
FT                   /id="PRO_0000143204"
FT   VARIANT         188
FT                   /note="E -> G (in strain: Isolate 22 AP 01)"
SQ   SEQUENCE   517 AA;  61790 MW;  A888B295DCEAB7A2 CRC64;
     MFQMKEYQIH LELDRSQQHN FLYPLLFREY IYALAHDHGL NRSTIPLENG GYDNKSSSLS
     VKRLISRTYQ RIHLSIYAKD SNPNQFIGHN NQFYSQMISE GFSVIVEIPF SLRLVAFLEG
     KEKEMAKSHN FQSIHSIFPF FENNFSHLHY VLDVLIPYPI RPEILVRTFR YWVKDASSLH
     LLRFFLHEYF NWNSLITPKK SNSIFSTSKP RFFLFLYNSH VYEYESIFFF LRNQSSHLRS
     TSSGLLFERI SFYGKVEDLV QVFVNDFQDN LWLFKHPIMH YVRYQGKSVL ASKDMPLLMN
     KWKYYLVNLW QWHFHVWSQP GRIHINHLYK DYIYFLGYLS RGRLNTLVVR SQMLENAFLI
     DNAMKQFETT VPIIPLIGSL TTARFCNSLG HPISKPTWAD SSDSYIIDRF MRICRNLSHY
     HSGSSKKKSL YRIKYILRVS CVKSLVRKHK STVRVFLKRL GSEFLEEFFT EEEHVLSLIF
     PRAVFPSRRL YRGRVWYFDI ICINDLVNHD KFEIFPN