Related Experiment Video
Updated: Oct 26, 2026

A Highly Scalable Approach to Perform Ecological Surveys of Selfing Caenorhabditis Nematodes
Published on: March 1, 2022
Common secondary structures for the second internal transcribed spacer pre-rRNA of two subfamilies of
N B Chilton1, H Hoste, L A Newton
1Department of Veterinary Science, The University of Melbourne, Werribee, Victoria, Australia. nbc@clyde.its.unimelb.edu.au
Abstract:
Sequences of the second internal transcribed spacer ribosomal DNA for the parasitic trichostrongylid nematodes Trichostrongylus probolurus, Trichostrongylus rugatus and Camelostrongylus mentulatus were compared with previously published sequences for five other species within the genus Trichostrongylus. The secondary structures of the second internal transcribed spacer pre-rRNA for these nematodes were predicted using an energy minimisation method. The results indicate that a common secondary structure of the second internal transcribed spacer of these nematodes is maintained despite distinct differences in primary sequence between species. Sequence differences among Trichostrongylus species ranged from 1.3 to 7.6%, but each species differed by 22-26% in sequence when compared with C. mentulatus which belongs to a different subfamily.
Related Concept Videos
The Structure of Intermediate Filaments
Intermediate filaments...
RNA Structure
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
RNA Structure
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
RNA Structure
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
Additional Subnuclear Structures
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...
Additional Subnuclear Structures
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...

