capsid

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

cap·sid

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

[From Latin capsa, box.]

capsid

(ˈkæpsɪd)
n
(Animals) any heteropterous bug of the family Miridae (formerly Capsidae), most of which feed on plant tissues, causing damage to crops
[C19: from New Latin Capsus (genus)]

capsid

(ˈkæpsɪd)
n
(Biochemistry) the outer protein coat of a mature virus
[C20: from French capside, from Latin capsa box]

cap•sid

(ˈkæp sɪd)

n.
the coiled or polyhedral structure, composed of proteins, that encloses the nucleic acid of a virus. Also called protein coat.
[1960–65; < French capside= Latin caps(a) case2 + -ide -id1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.capsid - a variety of leaf bugcapsid - a variety of leaf bug    
leaf bug, plant bug - small bright-colored insect that feeds on plant juices
four-lined leaf bug, four-lined plant bug, Poecilocapsus lineatus - yellow or orange leaf bug with four black stripes down the back; widespread in central and eastern North America
lygus bug - vector of viral plant diseases
2.capsid - the outer covering of protein surrounding the nucleic acid of a virus
virion - (virology) a complete viral particle; nucleic acid and capsid (and a lipid envelope in some viruses)
protein - any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; "a diet high in protein"
References in periodicals archive ?
The viral DNA is contained within an icosahedral capsid that measures 45 nm-55 nm.
To the Editor: Circular replication initiation protein (Rep)--encoding single-stranded DNA (ssDNA) (CRESSDNA) genomes are found in diverse group II virus families, which all possess a conserved Rep-encoding gene and a nonenveloped icosahedral capsid, except geminiviruses, which have twinned particles (1).
Also, many viruses form icosahedral capsid structures.