Disease relevance of UL32

• Six genes, including UL32, have been implicated in the cleavage and packaging of herpesvirus DNA into preassembled capsids [1].
• Properties of the protein encoded by the UL32 open reading frame of herpes simplex virus 1 [2].
• The consensus sequence is conserved in the UL32 homologs from varicella-zoster virus and equine herpesvirus 1 [2].

High impact information on UL32

• In this report, a functional epitope-tagged version of UL32 showed that while UL32 is predominantly cytoplasmic, some nuclear staining which colocalizes with the major DNA binding protein (ICP8, UL29) in replication compartments can be detected [1].
• The herpes simplex virus type 1 cleavage/packaging protein, UL32, is involved in efficient localization of capsids to replication compartments [1].
• We propose that UL32 may play a role in "bringing" preassembled capsids to the sites of DNA packaging and that the failure to localize to replication compartments may explain the cleavage/packaging defect exhibited by this mutant [1].
• The functions previously assigned to the essential herpes simplex virus 1 UL32 protein were in cleavage and/or packaging of viral DNA and in maturation and/or translocation of viral glycoproteins to the plasma membrane [2].
• To identify its gene product, we constructed a viral genome in which the thymidine kinase gene was inserted between the UL31 and UL32 open reading frames [3].

Other interactions of UL32

• The ts1233 mutation was mapped by marker rescue to the vicinity of genes UL32 and UL33 [4].

Analytical, diagnostic and therapeutic context of UL32

• A portion of equine herpesvirus type 1 (EHV-1) gene 28, which is homologous to herpes simplex virus type 1 gene UL32, was expressed using a prokaryotic system to yield a fusion protein which reacted on Western blots with P19, a monoclonal antibody (MAb) that reacts with EHV-1 glycoprotein 300 (gp300), confirming that this gene encodes gp300 [5].

References