Suppression of a +1 T mutation by a nearby substitution in the mitochondrial cox1 gene of Chlamydomonas reinhardtii : a new type of frameshift suppression in an organelle genome

1998 ◽  
Vol 259 (3) ◽  
pp. 294-298 ◽  
Author(s):  
C. Remacle ◽  
M. Colin ◽  
R. F. Matagne
2021 ◽  
Vol 773 ◽  
pp. 19-60
Author(s):  
Yuri I. Kantor ◽  
Nicolas Puillandre

The genus Sibogasyrinx has to date included only four species of rare deep-water Conoidea, each known from few specimens. In shell characters it strongly resembles three distantly-related genera, two of which, Comitas and Leucosyrinx, belong to a different family, the Pseudomelatomidae. A molecular phylogenetic analysis of a large amount of material of Conoidea has revealed the existence of much additional undescribed diversity within Sibogasyrinx from the central Indo-Pacific and temperate Northern Pacific. Based on partial sequences of the mitochondrial cox1 gene and morphological characters of 54 specimens, 10 species hypotheses are proposed, of which six are described as new species: S. subula sp. nov., S. lolae sp. nov., S. maximei sp. nov., S. clausura sp. nov., S. pagodiformis sp. nov. and S. elbakyanae Kantor, Puillandre & Bouchet sp. nov. One of the previously described species was absent in our material. Most of the new species are very similar and are compared to Leucosyrinx spp. Species of Sibogasyrinx are unique among Conoidea on account of the high intrageneric variability in radular morphology. Three distinct radula types are found within Sibogasyrinx, two of which are confined to highly supported subclades.


FEBS Letters ◽  
2003 ◽  
Vol 543 (1-3) ◽  
pp. 87-92 ◽  
Author(s):  
S.D. Lemaire ◽  
V. Collin ◽  
E. Keryer ◽  
A. Quesada ◽  
M. Miginiac-Maslow

Cell ◽  
1983 ◽  
Vol 32 (2) ◽  
pp. 379-389 ◽  
Author(s):  
Lambert A.M. Hensgens ◽  
Linda Bonen ◽  
Muus de Haan ◽  
Gerda van der Horst ◽  
Leslie A. Grivell

2019 ◽  
Vol 43 (4) ◽  
pp. 592-596 ◽  
Author(s):  
Behnam Abedi ◽  
Amir Hossein Maghsood ◽  
Behzad Khansarinejad ◽  
Mohammad Fallah ◽  
Mohammad Matini ◽  
...  

Mitochondrion ◽  
2009 ◽  
Vol 9 (1) ◽  
pp. 64
Author(s):  
Francesca A. Carlisle ◽  
Meghan C. Crosby ◽  
Nicole A. DeLauro ◽  
Kelley E. Durham ◽  
Alessandra Fiallos ◽  
...  

2015 ◽  
Vol 81 (5) ◽  
pp. 831-838 ◽  
Author(s):  
Suh Nih Tan ◽  
Hong Chang Lim ◽  
Sing Tung Teng ◽  
Po Teen Lim ◽  
Chui Pin Leaw

2005 ◽  
Vol 25 (23) ◽  
pp. 10628-10638 ◽  
Author(s):  
Mónica Pérez-Alegre ◽  
Alain Dubus ◽  
Emilio Fernández

ABSTRACT A new long terminal repeat (LTR) retrotransposon, named REM1, has been identified in the green alga Chlamydomonas reinhardtii. It was found in low copy number, highly methylated, and with an inducible transpositional activity. This retrotransposon is phylogenetically related to Ty3-gypsy LTR retrotransposons and possesses new and unusual structural features. A regulatory module, ORF3p, is present in an inverse transcriptional orientation to that of the polyprotein and contains PHD-finger and chromodomains, which might confer specificity of the target site and are highly conserved in proteins involved in transcriptional regulation by chromatin remodeling. By using different wild-type and mutant strains, we show that CrREM1 was active with a strong transcriptional activity and amplified its copy number in strains that underwent foreign DNA integration and/or genetic crosses. However, integration of CrREM1 was restricted to these events even though the expression of its full-length transcripts remained highly activated. A regulatory mechanism of CrREM1 retrotransposition which would help to minimize its deleterious effects in the host genome is proposed.


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