capsid

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Related to capsids: Icosahedral capsid, Capsid proteins

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 ?
HIV binds to receptors on human cells and then delivers the capsid inside them.
This result could be because a more complex capsid could provide protection from ozone.
On the basis of capsid protein (VP1) nucleotide sequences, SaV can be divided into 5 genogroups (GI-GV), of which the GI, GII, GIV, and GV strains infect humans.
Just figuring out how capsids assemble is incredibly valuable," says biophysicist Adam Zlotnick of the University of Oklahoma Health Sciences Center in Oklahoma City.
It was shown earlier that spherical capsids contain dozens of copies of the capsid protein, or CP, in an interlocking arrangement.
This intertwining apparently occurs right before the capsid proteins form into rings.
FDA recently approved the first HPV cervical cancer vaccine that includes a portion of the L1 capsid protein to guard against this terrible disease.
Altogether, 146/Kunming/ 04/China was expected to be the recombinant NoV with GII/7 capsid and GII/6 polymerase.
X-ray diffraction studies of the crystals have revealed that the protein tiles making up these viruses' capsids fit together in a symmetric pattern, in which a regular 12-faceted figure pokes through a 20-faceted one -- an arrangement that vaguely resembles a soccer ball.
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.
A neighbor-joining phylogenetic tree based on the amino acid sequences of the complete capsids (Figure 1) showed that QW48 grouped with Sw43 and Sw918 strains into GII-11 and that QW170 and QW218 formed a new genotype (GII-19), which was closer to porcine than to human strains.
Burstein also will present Abstract #99, titled "Long-Term Expression of Soluble TNFR:Fc Protein Following Multiple Administrations of AAV-TNFR:Fc Vector Pseudotyped with Capsids of Alternate Serotypes" in a poster session during the afternoon.