Notes on Genus: Apscaviroid

no particles

Type member: Apple scar skin viroid

Contents

Members of this Genus
General Description
Morphology
Electron Micrograph
Genome
Genus Genomic Organization
Genome Map
Type Member Genomic Organization
All Known Sequences
Curated Sequences

General Description

This is one of five genera of viroids assigned to the family Pospiviroidae. Like all the other genera in this family, members have a central conserved region (CCR) and lack the ability to self-cleave through hammerhead structures. Classification is based on the sequence of the CCR. An arbitrary level of 90% sequence similarity currently separates variants from species.

Morphology

Like all viroids, they have no virions and encode no proteins.

Genome

One circular, single stranded molecule of RNA, 297-370 nucleotides long.

Genus Genomic Organization

The RNA is non-coding.

Type Member Genomic Organization

The genome consists of one circular, single stranded molecule of RNA, 329-330 nucleotides long, which is non-coding.