2018

Molecules

Rocznik: 2018 | Tom: 23

artykuł naukowy

angielski

EN A small non-coding molecule of microRNA (19-24 nt) controls almost every biological process, including cellular and physiological, of various organisms' lives. The amount of microRNA (miRNA) produced within an organism is highly correlated to the organism's key processes, and determines whether the system works properly or not. A crucial factor in plant biogenesis of miRNA is the Dicer Like 1 (DCL1) enzyme. Its responsibility is to perform the cleavages in the miRNA maturation process. Despite everything we already know about the last phase of plant miRNA creation, recognition of miRNA by DCL1 in pre-miRNA structures of plants remains an enigma. Herein, we present a bioinformatic procedure we have followed to discover structure patterns that could guide DCL1 to perform a cleavage in front of or behind an miRNA:miRNA* duplex. The patterns in the closest vicinity of microRNA are searched, within pre-miRNA sequences, as well as secondary and tertiary structures. The dataset consists of structures of plant pre-miRNA from the Viridiplantae kingdom. The results confirm our previous observations based on Arabidopsis thaliana precursor analysis. Hereby, our hypothesis was tested on pre-miRNAs, collected from the miRBase database to show secondary structure patterns of small symmetric internal loops 1-1 and 2-2 at a 1-10 nt distance from the miRNA: miRNA* duplex.

1367

10.3390/molecules23061367

http://www.mdpi.com/1420-3049/23/6/1367

CC BY-ND (uznanie autorstwa - bez utworów zależnych)

ostateczna wersja opublikowana

06.2018

w momencie opublikowania

30

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