capsid

(redirected from Icosahedral capsid)
Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to Icosahedral capsid: Capsid proteins, Viral capsid

capsid

 [kap´sid]
the shell of protein that protects the nucleic acid of a virus; it is composed of structural units, or capsomers. According to the number of subunits possessed by capsomers, they are called dimers (2), trimers (3), pentamers (5), or hexamers (6).

cap·sid

(kap'sid),
Protein coat of a virus. See: virion.

capsid

(kăp′sĭd)
n.
The protein coat that constitutes the shell of a virus particle.

capsid

A protein coat that covers the nucleoprotein core or nucleic acid (RNA, DNA) of a free virus particle or phage, which may have icosahedral symmetry and itself be enclosed in an envelope—e.g., Togaviridae. It is composed of an integer multiple of 60 subunits, which self-assemble in a pattern typical for a particular virus.

vi·ri·on

(vī'rē-on)
The complete virus particle that is structurally intact and infectious.

capsid

The protein coat that encloses the genome of a virus.

capsid

the protein coat of a virus.

Capsid

The outer protein coat of a virus.
Mentioned in: Noroviruses
References in periodicals archive ?
The three objectives of this research project are to: (i) identify the structural basis of subunitrecognition that guides assembly of large icosahedral capsids of type ranaviruses and elucidate the functionof the internal membrane in this process, (ii) determine the conformational changes that accompanymaturation of ranavirus capsids and regulate the headful packaging of the dsDNA genome, and (iii) ascertainthe mechanisms of cell entry by the naked capsids and enveloped ranavirus virions.
FCV virions are non-enveloped, with icosahedral capsids with 27 to 40nm in diameter and a single-stranded and positive polarity RNA as genome; and it belongs to the Vesivirus genus of the Caliciviridae family (RADFORD et al., 2007).