From: Charles Date: Fri, 20 Aug 2021 11:43:03 +0000 (+0900) Subject: Le soir. X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=6386442b0aa5fbc8f401796d10658f36bf14a1fe;p=source%2F.git Le soir. --- diff --git a/biblio/32823766.mdwn b/biblio/32823766.mdwn new file mode 100644 index 00000000..e6eaf534 --- /dev/null +++ b/biblio/32823766.mdwn @@ -0,0 +1,14 @@ +[[!meta title="Phylogenetic Analyses of Glycosyl Hydrolase Family 6 Genes in Tunicates: Possible Horizontal Transfer."]] +[[!tag cellulose Oikopleura]] + +Li KL, Nakashima K, Inoue J, Satoh N. + +Genes (Basel). 2020 Aug 13;11(8):937. doi:10.3390/genes11080937 + +Phylogenetic Analyses of Glycosyl Hydrolase Family 6 Genes in Tunicates: Possible Horizontal Transfer. + +[[!pmid 32823766 desc="Comparison of primary sequence and of intron position suggests that GHC6-1 was transferred in a common ancestor of all living tunicates. _O. dioica_'s GH6-1 gene lacks a conserved catalytic aspartate, and does not share introns with the other tunicate genes."]] + +“We found that in many tunicate GH6-1 proteins, an aspartic acid can be aligned to the catalytic _H. jecorina_ D221, except for SthGH6-1b (E197) and OdiGH6-1 (K211). However, the catalytic aspartic acid was not conserved in tunicate CesA.” + +“In this study, although we found no other sites shared between genes of _O. dioica_ and other tunicates, we found that many shared splice sites are present among GH6-containing genes from three other major clades of tunicates (Thaliacea + Phlebobranchia + Stolidobranchia). It is reasonable to assume that many shared introns were acquired after the branching of larvaceans and before the subsequent divergence of major tunicate clades.” diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index 9475b5a3..1684c65f 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -202,7 +202,9 @@ Genes and pathways intestinalis_ ([[Matthysse and coll., 2004|biblio/14722352]]). - A GH6 (glycosyl hydrolase family 6) domain is found in the CesA genes, as well as an independent genes, in Tunicates - ([[Inoue, Nakashima and Satoh, 2019|biblio/30974905]]). + ([[Inoue, Nakashima and Satoh, 2019|biblio/30974905]]). In _Oikopleura_, it + lacks a conserved catalytic aspatate, and does not share ancestral introns with + other tunicates ([[Li and coll., 2020|biblio/32823766]]). - _O. dioica_ has multiple CDK1 and Cyclin B paraplogs, some of which are implicated in oogenesis ([[Øvrebø and coll., 2015|biblio/25714331]], [[Feng & Thompson, 2018|biblio/29969934]]).