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M94A3151.TXT
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1994-10-25
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Document 3151
DOCN M94A3151
TI HIV 'tat' gene is homologous with regions in HSV and EBV suggesting
possible basis for synergism.
DT 9412
AU Smith RW; Inst. for Postgrad. Interdisc. Stud., Palo Alto, CA
94306-0846.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):141 (abstract no. PA0185). Unique
Identifier : AIDSLINE ICA10/94369424
AB OBJECTIVE: Synergism among lentiviruses and herpesviruses (especially
gamma herpesviruses) is well known but poorly understood. One report of
superinfections with lentiviruses and herpesviruses suggests that
herpesviruses may activate lentiviruses. We reported that tat and 5
other HIV regulatory genes may account for the recessively functional
slowly progressive features, with there being 6 homologues in a 10,366
base pair region on 4p16.3 possibly accounting for recessively
functional slowly progressive features of Huntington's disease. Because
of dormant and latent features of some herpesviruses, we now inquire if
tat and other HIV regulatory genes are homologous with regions in
herpesviruses, especially in view of their synergism with the
lentiviruses. METHODS: Genetic prospecting, a heuristic browsing tool
combining FindSeq (sequence location algorithm), FastDB (fast pairwise
sequence comparisons), CLUSTAL V (multiple sequence alignment), and
TBLASTN (a basic local alignment search tool). RESULTS: Significant
homologues of tat were found in EBV (smallest Poisson probability [sPp]
= 0.46), HSV-1 (sPp = 0.014) and HSV-2 (sPp = 0.51). A homologue of tat
also is found in a bovine herpesvirus (sPp = 0.26). DISCUSSION AND
CONCLUSIONS: EBV and HSV are remarkable for their latent and productive
phases. When combined with the finding of homologues of tat and other
HIV genes implicated in recessive functions, this may account for
dormant and latent phases while also explaining their synergism with
lentiviruses. Synthesis and analysis of HIV homologues remains a subject
for future investigation, as is the 'genetic prospecting' for other
homologues relevant to slowly progressive features of lentiviruses or
genetic diseases.
DE Algorithms Base Sequence Chromosome Mapping Chromosomes, Human, Pair
4 Comparative Study *Genes, tat *Genes, Regulator *Genes, Viral
Herpesvirus 1, Bovine Herpesvirus 4, Human/*GENETICS Human
Huntington's Disease/GENETICS HIV/*GENETICS Lentivirus/*GENETICS
Poisson Distribution Probability Sequence Homology, Nucleic Acid
Simplexvirus/*GENETICS MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).