capsid


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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

/cap·sid/ (kap´sid) the shell of protein that protects the nucleic acid of a virus; it is composed of structural units, or capsomers.

capsid

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

capsid

[kap′sid]
Etymology: L, capsa, box
the layer of protein enveloping the genome of a virion. A capsid is composed of structural units called capsomeres. Its symmetry may be cubic or helical.

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

capsid

outer coat of a virus

capsid

the shell of protein that protects the nucleic acid of a virus; it is composed of individual morphological units called capsomers. For icosahedral viruses, there are two kinds of capsomers called pentamers, which occupy the 12 corner positions of the icosahedral shell, and hexamers, which occupy the face and edges. The number of hexamers varies between different viruses. The capsomers of helical viruses are composed of a single polypeptide and are also called protomers. All viruses of animals, except for poxviruses which have a complex structure, are minimally composed of a nucleocapsid which is the capsid surrounding the nucleic acid. In addition some viruses have an envelope surrounding the nucleocapsid.
References in periodicals archive ?
The canyons slice through the capsid at 12 sites, each representing a vertex where five bound and folded proteins meet, Rossmann found.
4 norovirus capsid with ABH histo-blood group antigens.
But before these newly released viruses can infect other cells, the immature capsid undergoes a dramatic rearrangement to form the mature, cone-shaped shell.
The advantages of speed-bulk BVS capsids can be prepared within days-and relative inexpensiveness, make BVS the platform of choice particularly where rapid response is advantageous such as in emergency preparedness or personalized medicine," said Bende.
If this procedure was not successful, sequencing of the capsid genome was attempted.
The temperature sensitivity of the Sabin type 3 vaccine strain of poliovirus: molecular and structural effects of a mutation in the capsid protein VP3.
Pair-wise identity in the ORF1b and full-length capsid protein of strain Nausika/08/ITA to a selection of AstV strains was determined by using multiple alignments generated with Bioedit software package version 2.
For this project, Ytreberg will use computational modeling to analyze if the mutations stabilize the capsid.
Cleavage of capsid from SP1, the final step in viral maturation, is mediated by the viral protease enzyme.
NVR-1221 belongs to a new class of antiviral agents that target the viral core or capsid protein of the hepatitis B virus.
PCR-positive samples were then tested by using primer sets Mon269-Mon270 (8) and SF0053 / SF0061, amplifying either a 449-bp or a 402-bp product of the ORF2 capsid gene from classical HAstVs (serotypes I-VIII), or astrovirus MLB1, respectively.
During the study, they used a combination of nuclear magnetic resonance and cryoEM, which are standard structural biology tools, to see both the overall shape and the atomic details of capsid protein (CA) assembly.