Related Experiment Video

Updated: Jul 13, 2026

Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus
10:49

Assays for the Specific Growth Rate and Cell-binding Ability of Rotavirus

Published on: January 28, 2019

Bioinformatic prediction of polymerase elements in the rotavirus VP1 protein

Rodrigo Vásquez-del Carpió1, Jaime L Morales, Mario Barro

  • 1Laboratorio de Virología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.

Biological Research
|July 28, 2007
PubMed

Insights

This study details the rotavirus VP1 protein, identifying key RNA-dependent RNA polymerase (RdRp) motifs. Analysis suggests VP1 possesses the core elements for RNA replication, with unique regions potentially explaining Reoviridae family characteristics.

Area of Science:

  • Virology
  • Molecular Biology
  • Bioinformatics

Background:

  • Rotaviruses are a primary cause of infant gastroenteritis globally.
  • The rotavirus genome comprises eleven double-stranded RNA segments.
  • The VP1 protein is the viral RNA-dependent RNA polymerase (RdRp), essential for replication.

Purpose of the Study:

  • To conduct a comprehensive bioinformatic analysis of the rotavirus VP1 sequence.
  • To identify conserved motifs and structural features within VP1.
  • To assess the functional potential of VP1 as an RNA-dependent RNA polymerase.

Main Methods:

  • Bioinformatic assessment of the VP1 protein sequence.
  • Identification of canonical motifs using comparative analysis.
  • Prediction of structural conservation within the polymerase core domains.

Main Results:

  • Canonical RdRp motifs were identified in the VP1 sequence.
  • Structural conservation was predicted in regions analogous to polymerase palm, fingers, and thumb subdomains.
  • Unique regions within VP1, distinct from common RdRp features, were noted.

Conclusions:

  • The rotavirus VP1 protein contains essential elements for RNA-dependent RNA polymerase activity.
  • VP1 shares conserved RdRp features with other viral polymerases.
  • Unique VP1 regions may contribute to the specific characteristics of the Reoviridae family.

More Related Videos

Simplified Reverse Genetics Method to Recover Recombinant Rotaviruses Expressing Reporter Proteins11:40

Simplified Reverse Genetics Method to Recover Recombinant Rotaviruses Expressing Reporter Proteins

Published on: April 17, 2020

Prediction of HIV-1 Coreceptor Usage (Tropism) by Sequence Analysis using a Genotypic Approach07:06

Prediction of HIV-1 Coreceptor Usage (Tropism) by Sequence Analysis using a Genotypic Approach

Published on: December 1, 2011

Related Concept Videos

Leaky Scanning02:28

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Bacterial RNA Polymerase00:43

Bacterial RNA Polymerase

Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
Retroviruses02:33

Retroviruses

Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
Eukaryotic RNA Polymerases00:58

Eukaryotic RNA Polymerases

RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
Viruses with RNA Genomes01:29

Viruses with RNA Genomes

RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
Size and Structure of Viral Genomes01:26

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...