![](https://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/CYP_Gene_Superfamily.png/324px-CYP_Gene_Superfamily.png)
Cytochrome P450, family 11, also known as CYP11, is a chordate cytochrome P450 monooxygenase family. This family contains many enzymes involved in steroidogenesis, such as Cholesterol side-chain cleavage enzyme (CYP11A1), Steroid 11β-hydroxylase (CYP11B1) and Aldosterone synthase (CYP11B2).[3] CYP11 can be divided into A to E five subfamilies,[4] and CYP11A are the ohonologues to CYP11C, which duplicated during 2R event, and the tetrapod's CYP11B evolved from CYP11C of its fish ancestors,[2] CYP11D and F found in amphioxus.[4] These are not the typical CYP subfamilies, which share at least 40% amino acid identity,[5] members between CYP11A and B subfamily are only 37.5-38.8% identical,[6] and the CYP11D and E genes seen in modern lancelet (Branchiostoma floridae, an ancient branch of chordate animals) is 39% identical to catfish CYP11A1.[2][4]
References
[edit]- ^ Nebert DW, Nelson DR, Coon MJ, Estabrook RW, Feyereisen R, Fujii-Kuriyama Y, Gonzalez FJ, Guengerich FP, Gunsalus IC, Johnson EF (January 1991). "The P450 superfamily: update on new sequences, gene mapping, and recommended nomenclature". DNA and Cell Biology. 10 (1): 1–14. doi:10.1089/dna.1991.10.1. PMID 1991046.
- ^ a b c Nelson DR, Goldstone JV, Stegeman JJ (February 2013). "The cytochrome P450 genesis locus: the origin and evolution of animal cytochrome P450s". Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences. 368 (1612): 20120474. doi:10.1098/rstb.2012.0474. PMC 3538424. PMID 23297357.
- ^ Omura T (27 October 2006). "Mitochondrial P450s". Chemico-Biological Interactions. 163 (1–2): 86–93. Bibcode:2006CBI...163...86O. doi:10.1016/j.cbi.2006.06.008. PMID 16884708.
- ^ a b c Baker ME, Nelson DR, Studer RA (July 2015). "Origin of the response to adrenal and sex steroids: Roles of promiscuity and co-evolution of enzymes and steroid receptors". The Journal of Steroid Biochemistry and Molecular Biology. 151: 12–24. doi:10.1016/j.jsbmb.2014.10.020. PMID 25445914. S2CID 21649057.
- ^ Nelson DR (2006). "Cytochrome P450 Nomenclature, 2004". Cytochrome P450 Protocols. Methods in Molecular Biology. Vol. 320. pp. 1–10. doi:10.1385/1-59259-998-2:1. ISBN 1-59259-998-2. PMID 16719369.
- ^ Nebert DW, Nelson DR, Adesnik M, Coon MJ, Estabrook RW, Gonzalez FJ, Guengerich FP, Gunsalus IC, Johnson EF, Kemper B (January 1989). "The P450 superfamily: updated listing of all genes and recommended nomenclature for the chromosomal loci". DNA (Mary Ann Liebert, Inc.). 8 (1): 1–13. doi:10.1089/dna.1.1989.8.1. PMID 2651058.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction