{{Short description|Plant plastidial gene}} {{Infobox nonhuman protein | Name = Maturase K | image = | width = | caption = | Organism = ''Arabidopsis thaliana'', plants | TaxID = 3702 | Symbol = ''mat''K | AltSymbols = ycf14 | IUPHAR_id = | ATC_prefix = | ATC_suffix = | ATC_supplemental = | CAS_number = | CAS_supplemental = | DrugBank = | EntrezGene = 844797 | PDB = | RefSeqmRNA = NP_051040.2 | RefSeqProtein = | UniProt = P56784 | ECnumber = | Chromosome = | EntrezChromosome = NC_000932.1 | GenLoc_start = | GenLoc_end = }} {{Infobox protein family|Name=MatK/TrnK, N-terminal (inactive RT)|Symbol=MatK_N|Pfam=PF01824|InterPro=IPR024942}} [[File:Plastomap of Arabidopsis thaliana.svg|thumb|Location of the ''matK'' gene in the chloroplast genome of ''Arabidopsis thaliana''. ''matK'' is one of the protein-coding genes involved in functions other than photosynthetic reactions (red boxes). ''matK'' maps at the 2–3.5 kb coordinates.]]
'''Maturase K''' (matK) is a plant plastidial gene.<ref>{{cite journal | vauthors = Zoschke R, Nakamura M, Liere K, Sugiura M, Börner T, Schmitz-Linneweber C | title = An organellar maturase associates with multiple group II introns | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 107 | issue = 7 | pages = 3245–50 | date = February 2010 | pmid = 20133623 | pmc = 2840290 | doi = 10.1073/pnas.0909400107 | bibcode = 2010PNAS..107.3245Z | doi-access = free }}</ref> The protein it encodes is an organelle intron maturase, a protein that splices Group II introns. It is essential for ''in vivo'' splicing of Group II introns.<ref name=pmid16763758>{{cite journal | vauthors = Ahlert D, Piepenburg K, Kudla J, Bock R | title = Evolutionary origin of a plant mitochondrial group II intron from a reverse transcriptase/maturase-encoding ancestor | journal = Journal of Plant Research | volume = 119 | issue = 4 | pages = 363–71 | date = July 2006 | pmid = 16763758 | doi = 10.1007/s10265-006-0284-0 | bibcode = 2006JPlR..119..363A | s2cid = 8277547 }}</ref> Amongst other maturases, this protein retains only a well conserved domain X and remnants of a reverse transcriptase domain.<ref>{{cite journal | vauthors = Mohr G, Perlman PS, Lambowitz AM | title = Evolutionary relationships among group II intron-encoded proteins and identification of a conserved domain that may be related to maturase function | journal = Nucleic Acids Research | volume = 21 | issue = 22 | pages = 4991–7 | date = November 1993 | pmid = 8255751 | pmc = 310608 | doi = 10.1093/nar/21.22.4991 }}</ref>
Universal matK primers can be used for DNA barcoding of angiosperms.<ref>{{cite journal | vauthors = Jing YU, Jian-Hua XU, Shi-Liang ZH | title = New universal matK primers for DNA barcoding angiosperms. | journal = Journal of Systematics and Evolution | date = May 2011 | volume = 49 | issue = 3 | pages = 176–81 | doi = 10.1111/j.1759-6831.2011.00134.x | bibcode = 2011JSyEv..49..176Y | s2cid = 86349548 | doi-access = free }}</ref>
== See also == * LtrA, an open reading frame found in the ''Lactococcus lactis'' group II introns LtrB. It is an intron-encoded protein, with three subdomains, one of which is a reverse-transcriptase/maturase.
== References == {{reflist}}
Category:Plant genes Category:Plastids
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