# Maturase K

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{{Short description|Plant plastidial gene}}
{{Infobox nonhuman protein
| Name = Maturase K
| image = 
| width = 
| caption = 
| Organism = ''[Arabidopsis thaliana](/source/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](/source/chloroplast_genome) of ''[Arabidopsis thaliana](/source/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](/source/Chloroplast_DNA).<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](/source/RNA_splicing) [Group II intron](/source/Group_II_intron)s. 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](/source/domain_X) and remnants of a [reverse transcriptase](/source/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](/source/Primer_(molecular_biology)) can be used for [DNA barcoding](/source/DNA_barcoding) of [angiosperm](/source/angiosperm)s.<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](/source/LtrA), an [open reading frame](/source/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

{{gene-stub}}

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Adapted from the Wikipedia article [Maturase K](https://en.wikipedia.org/wiki/Maturase_K) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Maturase_K?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.