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Details on Person UniProt:Q2HRB2 ORF20

Class:IdReferenceGeneProduct:9973364
_chainChangeLogchain:1-257 for 9973364 added on Fri Feb 20 2026
_displayNameUniProt:Q2HRB2 ORF20
_timestamp2026-02-20 21:35:53
chainchain:1-257
checksumD2D4C4941598408F
commentFUNCTION May participate in nuclear egress of viral particles. Plays a role in the dispersal of several host nucleolar proteins including NCL/nucleolin and NPM1. Since deletion of host NCL/nucleolin negatively impact on nuclear egress, UL24 supposedly acts on this process through its effect on host nucleoli (By similarity). Induces cell cycle arrest in host cells at the G2/M phase following by apoptosis. The mechanism involves the inhibition of host mitotic complex cyclin-B/CDK1.SUBCELLULAR LOCATION Expressed late in the infection cycle.SIMILARITY Belongs to the herpesviridae UL24 family.
created[InstanceEdit:9973335] Orlic-Milacic, Marija, 2025-11-14
descriptionrecommendedName: Protein UL24 homolog
geneNameORF20
identifierQ2HRB2
isSequenceChangedFALSE
keywordHost cytoplasm
Host G2/M cell cycle arrest by virus
Host Golgi apparatus
Host nucleus
Host-virus interaction
Modulation of host cell cycle by virus
Reference proteome
Virion
modified[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameORF20
referenceDatabase[ReferenceDatabase:2] UniProt
secondaryIdentifierUL24_HHV8P
sequenceLength257
species[Species:2671781] Human herpesvirus 8
(referenceEntity)[EntityWithAccessionedSequence:9973198] ORF20 [Golgi lumen] [Human herpesvirus 8]
[EntityWithAccessionedSequence:9973269] ORF20 [cytosol] [Human herpesvirus 8]
[EntityWithAccessionedSequence:9973274] ORF20 [viral capsid] [Human herpesvirus 8]
[EntityWithAccessionedSequence:9973295] ORF20 [nucleoplasm] [Human herpesvirus 8]
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