Le SIDA au Ghana (serveur d'exploration)

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Genomic divergence of an HIV-2 from a German AIDS patient probably infected in Mali.

Identifieur interne : 000535 ( PubMed/Curation ); précédent : 000534; suivant : 000536

Genomic divergence of an HIV-2 from a German AIDS patient probably infected in Mali.

Auteurs : F. Kirchhoff ; K D Jentsch ; A. Stuke ; J. Mous ; G. Hunsmann

Source :

RBID : pubmed:2252559

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Abstract

The complete nucleotide sequence of an HIV-2 isolate derived from a German AIDS patient with predominantly neurological symptoms is reported. The HIV-2BEN sequence is highly divergent from those of previously described HIV-2 and SIV strains. Evolutionary tree analysis of eight HIV-2 sequences reveals the existence of three HIV-2 groups. HIV-2BEN belongs to a group with two isolates from Ghana and The Gambia. Based on a comparison of HIV-2BEN with six HIV-2 isolates, SIVsmm and SIVmac, the variability of the structural env and gag proteins is similar within the HIV-2/SIVsmm/mac and HIV-1 groups. In contrast, the regulatory HIV-1 proteins are more highly conserved than those from HIV-2 strains. Multiple sequence alignments reveal that some domains of the envelope and regulatory proteins are well conserved among HIV-1, HIV-2/SIVsmm/mac, SIVagm and SIVmnd. The identification of conserved domains within the external glycoprotein could help to develop broadly active vaccines.

PubMed: 2252559

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F. Kirchhoff
<affiliation>
<nlm:affiliation>German Primate Center, Department of Virology and Immunology, Göttingen.</nlm:affiliation>
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Le document en format XML

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<term>Gene Products, env (chemistry)</term>
<term>Gene Products, env (genetics)</term>
<term>Gene Products, gag (chemistry)</term>
<term>Gene Products, gag (genetics)</term>
<term>Gene Products, nef (chemistry)</term>
<term>Gene Products, nef (genetics)</term>
<term>Gene Products, pol (chemistry)</term>
<term>Gene Products, pol (genetics)</term>
<term>Genetic Variation</term>
<term>HIV-2 (classification)</term>
<term>HIV-2 (genetics)</term>
<term>Humans</term>
<term>Mali</term>
<term>Molecular Sequence Data</term>
<term>Phylogeny</term>
<term>Repetitive Sequences, Nucleic Acid</term>
<term>Sequence Alignment</term>
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<term>Données de séquences moléculaires</term>
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<term>Phylogénie</term>
<term>Produits du gène env ()</term>
<term>Produits du gène env (génétique)</term>
<term>Produits du gène gag ()</term>
<term>Produits du gène gag (génétique)</term>
<term>Produits du gène nef ()</term>
<term>Produits du gène nef (génétique)</term>
<term>Produits du gène nef du virus de l'immunodéficience humaine</term>
<term>Produits du gène pol ()</term>
<term>Produits du gène pol (génétique)</term>
<term>Protéines virales régulatrices ou accessoires ()</term>
<term>Protéines virales régulatrices ou accessoires (génétique)</term>
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<term>Syndrome d'immunodéficience acquise (microbiologie)</term>
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<term>Amino Acid Sequence</term>
<term>Base Sequence</term>
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<term>Humans</term>
<term>Molecular Sequence Data</term>
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<term>Repetitive Sequences, Nucleic Acid</term>
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<term>Sequence Homology, Nucleic Acid</term>
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<div type="abstract" xml:lang="en">The complete nucleotide sequence of an HIV-2 isolate derived from a German AIDS patient with predominantly neurological symptoms is reported. The HIV-2BEN sequence is highly divergent from those of previously described HIV-2 and SIV strains. Evolutionary tree analysis of eight HIV-2 sequences reveals the existence of three HIV-2 groups. HIV-2BEN belongs to a group with two isolates from Ghana and The Gambia. Based on a comparison of HIV-2BEN with six HIV-2 isolates, SIVsmm and SIVmac, the variability of the structural env and gag proteins is similar within the HIV-2/SIVsmm/mac and HIV-1 groups. In contrast, the regulatory HIV-1 proteins are more highly conserved than those from HIV-2 strains. Multiple sequence alignments reveal that some domains of the envelope and regulatory proteins are well conserved among HIV-1, HIV-2/SIVsmm/mac, SIVagm and SIVmnd. The identification of conserved domains within the external glycoprotein could help to develop broadly active vaccines.</div>
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<AbstractText>The complete nucleotide sequence of an HIV-2 isolate derived from a German AIDS patient with predominantly neurological symptoms is reported. The HIV-2BEN sequence is highly divergent from those of previously described HIV-2 and SIV strains. Evolutionary tree analysis of eight HIV-2 sequences reveals the existence of three HIV-2 groups. HIV-2BEN belongs to a group with two isolates from Ghana and The Gambia. Based on a comparison of HIV-2BEN with six HIV-2 isolates, SIVsmm and SIVmac, the variability of the structural env and gag proteins is similar within the HIV-2/SIVsmm/mac and HIV-1 groups. In contrast, the regulatory HIV-1 proteins are more highly conserved than those from HIV-2 strains. Multiple sequence alignments reveal that some domains of the envelope and regulatory proteins are well conserved among HIV-1, HIV-2/SIVsmm/mac, SIVagm and SIVmnd. The identification of conserved domains within the external glycoprotein could help to develop broadly active vaccines.</AbstractText>
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