Maturase K
Maturase K (matK) is a plant plastidial gene,[1] although higher plants have it moved into the nuclear genome.[2] 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.[3] Amongst other maturases, this protein retains only a well conserved domain X and remnants of a reverse transcriptase domain.[4]
| Maturase K | |||||||
|---|---|---|---|---|---|---|---|
| Identifiers | |||||||
| Organism | |||||||
| Symbol | matK | ||||||
| Alt. symbols | ycf14 | ||||||
| Entrez | 844797 | ||||||
| RefSeq (mRNA) | NP_051040.2 | ||||||
| UniProt | P56784 | ||||||
| |||||||
| MatK/TrnK, N-terminal (inactive RT) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| Symbol | MatK_N | ||||||||
| Pfam | PF01824 | ||||||||
| InterPro | IPR024942 | ||||||||
| |||||||||
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.
Universal matK primers can be used for DNA barcoding of angiosperms.[5]
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
- Zoschke R, Nakamura M, Liere K, Sugiura M, Börner T, Schmitz-Linneweber C (February 2010). "An organellar maturase associates with multiple group II introns". Proceedings of the National Academy of Sciences of the United States of America. 107 (7): 3245–50. doi:10.1073/pnas.0909400107. PMC 2840290. PMID 20133623.
- Mohr G, Lambowitz AM (January 2003). "Putative proteins related to group II intron reverse transcriptase/maturases are encoded by nuclear genes in higher plants". Nucleic Acids Research. 31 (2): 647–52. doi:10.1093/nar/gkg153. PMC 140517. PMID 12527773.
- Ahlert D, Piepenburg K, Kudla J, Bock R (July 2006). "Evolutionary origin of a plant mitochondrial group II intron from a reverse transcriptase/maturase-encoding ancestor". Journal of Plant Research. 119 (4): 363–71. doi:10.1007/s10265-006-0284-0. PMID 16763758.
- Mohr G, Perlman PS, Lambowitz AM (November 1993). "Evolutionary relationships among group II intron-encoded proteins and identification of a conserved domain that may be related to maturase function". Nucleic Acids Research. 21 (22): 4991–7. doi:10.1093/nar/21.22.4991. PMC 310608. PMID 8255751.
- Jing YU, Jian-Hua XU, Shi-Liang ZH (May 2011). "New universal matK primers for DNA barcoding angiosperms". Journal of Systematics and Evolution. 49 (3): 176–81. doi:10.1111/j.1759-6831.2011.00134.x.
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