ID   MATK_POPNI              Reviewed;         510 AA.
AC   Q8WKL8;
DT   22-FEB-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2002, sequence version 1.
DT   03-AUG-2022, entry version 53.
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   Populus nigra (Lombardy poplar).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Malpighiales; Salicaceae; Saliceae; Populus.
OX   NCBI_TaxID=3691;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Kita Y., Kato M.;
RT   "Phylogenetic relationships of the aquatic angiosperm family Podostemaceae
RT   inferred from matK sequence data.";
RL   Submitted (FEB-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; AB038186; BAB83147.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8WKL8; -.
DR   PRIDE; Q8WKL8; -.
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..510
FT                   /note="Maturase K"
FT                   /id="PRO_0000143644"
SQ   SEQUENCE   510 AA;  60991 MW;  A9E94502821CA76E CRC64;
     MKIEKSQRNL EIDRSRKNDF LYPLIFREYI YTFAHDRDLN RSILLENVSY DNKYSLLIVK
     RLITRMYQQN HLIISANDSN QNTFFRYNKN LYFQMISEGF AVIVEIPFSL RLVSSLERSE
     IVKSHNLRSI HSIFPFLEGK FPHLNYLSEG LIPYPIHLEK LVQILRYWVK DPSSLHLLRL
     FLHEYWNLNS LIIPKKSISF FVKKNQRFFL FLYNSHVYEY ESVFFFLCKQ SFHFRLTFYQ
     VFLERIDFYG KIEHFVEVFT KDWGDSLCLL KDPFIHYIRY QGKSIFVSKD TPLLMKKWKY
     YLVNLCQCHF DVCFQPQKIH INPFSLYKHS FALLGYLSSS SVRLNLSVVR SQMLENAFLM
     DNIMNKLDTT VSIIPLIGSL AKMKFCNAVG HPISKPTWAD FSDSDIIDRF VRICRNLSHY
     YSGSSRKKSL YRIKYILRLS CVKTLARKHK STVRIFLKRL GSELLEEFFT EEEQIIFLIF
     PRASSISQKL YRGRVWYLDI ICINELSNHE