HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae
Members of the virus family Sphaerolipoviridae include both archaeal viruses and bacteriophages that possess a tailless icosahedral capsid with an internal membrane. The genera Alpha- and Betasphaerolipovirus comprise viruses that infect halophilic euryarchaea, whereas viruses of thermophilic Thermu...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-02-01
|
| Series: | Viruses |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1999-4915/9/2/32 |
| _version_ | 1828850795347443712 |
|---|---|
| author | Tatiana A. Demina Maija K. Pietilä Julija Svirskaitė Janne J. Ravantti Nina S. Atanasova Dennis H. Bamford Hanna M. Oksanen |
| author_facet | Tatiana A. Demina Maija K. Pietilä Julija Svirskaitė Janne J. Ravantti Nina S. Atanasova Dennis H. Bamford Hanna M. Oksanen |
| author_sort | Tatiana A. Demina |
| collection | DOAJ |
| description | Members of the virus family Sphaerolipoviridae include both archaeal viruses and bacteriophages that possess a tailless icosahedral capsid with an internal membrane. The genera Alpha- and Betasphaerolipovirus comprise viruses that infect halophilic euryarchaea, whereas viruses of thermophilic Thermus bacteria belong to the genus Gammasphaerolipovirus. Both sequence-based and structural clustering of the major capsid proteins and ATPases of sphaerolipoviruses yield three distinct clades corresponding to these three genera. Conserved virion architectural principles observed in sphaerolipoviruses suggest that these viruses belong to the PRD1-adenovirus structural lineage. Here we focus on archaeal alphasphaerolipoviruses and their related putative proviruses. The highest sequence similarities among alphasphaerolipoviruses are observed in the core structural elements of their virions: the two major capsid proteins, the major membrane protein, and a putative packaging ATPase. A recently described tailless icosahedral haloarchaeal virus, Haloarcula californiae icosahedral virus 1 (HCIV-1), has a double-stranded DNA genome and an internal membrane lining the capsid. HCIV-1 shares significant similarities with the other tailless icosahedral internal membrane-containing haloarchaeal viruses of the family Sphaerolipoviridae. The proposal to include a new virus species, Haloarcula virus HCIV1, into the genus Alphasphaerolipovirus was submitted to the International Committee on Taxonomy of Viruses (ICTV) in 2016. |
| first_indexed | 2024-12-12T23:19:16Z |
| format | Article |
| id | doaj.art-931b6cbba99a44cf842885f772d58863 |
| institution | Directory Open Access Journal |
| issn | 1999-4915 |
| language | English |
| last_indexed | 2024-12-12T23:19:16Z |
| publishDate | 2017-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Viruses |
| spelling | doaj.art-931b6cbba99a44cf842885f772d588632022-12-22T00:08:21ZengMDPI AGViruses1999-49152017-02-01923210.3390/v9020032v9020032HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family SphaerolipoviridaeTatiana A. Demina0Maija K. Pietilä1Julija Svirskaitė2Janne J. Ravantti3Nina S. Atanasova4Dennis H. Bamford5Hanna M. Oksanen6Department of Biosciences and Institute of Biotechnology, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandDepartment of Food and Environmental Sciences, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandDepartment of Biosciences and Institute of Biotechnology, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandDepartment of Biosciences and Institute of Biotechnology, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandDepartment of Biosciences and Institute of Biotechnology, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandDepartment of Biosciences and Institute of Biotechnology, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandDepartment of Biosciences and Institute of Biotechnology, Viikinkaari 9, FIN-00014, University of Helsinki, Helsinki, FinlandMembers of the virus family Sphaerolipoviridae include both archaeal viruses and bacteriophages that possess a tailless icosahedral capsid with an internal membrane. The genera Alpha- and Betasphaerolipovirus comprise viruses that infect halophilic euryarchaea, whereas viruses of thermophilic Thermus bacteria belong to the genus Gammasphaerolipovirus. Both sequence-based and structural clustering of the major capsid proteins and ATPases of sphaerolipoviruses yield three distinct clades corresponding to these three genera. Conserved virion architectural principles observed in sphaerolipoviruses suggest that these viruses belong to the PRD1-adenovirus structural lineage. Here we focus on archaeal alphasphaerolipoviruses and their related putative proviruses. The highest sequence similarities among alphasphaerolipoviruses are observed in the core structural elements of their virions: the two major capsid proteins, the major membrane protein, and a putative packaging ATPase. A recently described tailless icosahedral haloarchaeal virus, Haloarcula californiae icosahedral virus 1 (HCIV-1), has a double-stranded DNA genome and an internal membrane lining the capsid. HCIV-1 shares significant similarities with the other tailless icosahedral internal membrane-containing haloarchaeal viruses of the family Sphaerolipoviridae. The proposal to include a new virus species, Haloarcula virus HCIV1, into the genus Alphasphaerolipovirus was submitted to the International Committee on Taxonomy of Viruses (ICTV) in 2016.http://www.mdpi.com/1999-4915/9/2/32SphaerolipoviridaeAlphasphaerolipovirushalovirusarchaeal virustailless icosahedral virusmembrane virushalophilic archaeavirus classificationInternational Committee on Taxonomy of Virusesstructure-based viral lineage |
| spellingShingle | Tatiana A. Demina Maija K. Pietilä Julija Svirskaitė Janne J. Ravantti Nina S. Atanasova Dennis H. Bamford Hanna M. Oksanen HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae Viruses Sphaerolipoviridae Alphasphaerolipovirus halovirus archaeal virus tailless icosahedral virus membrane virus halophilic archaea virus classification International Committee on Taxonomy of Viruses structure-based viral lineage |
| title | HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae |
| title_full | HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae |
| title_fullStr | HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae |
| title_full_unstemmed | HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae |
| title_short | HCIV-1 and Other Tailless Icosahedral Internal Membrane-Containing Viruses of the Family Sphaerolipoviridae |
| title_sort | hciv 1 and other tailless icosahedral internal membrane containing viruses of the family sphaerolipoviridae |
| topic | Sphaerolipoviridae Alphasphaerolipovirus halovirus archaeal virus tailless icosahedral virus membrane virus halophilic archaea virus classification International Committee on Taxonomy of Viruses structure-based viral lineage |
| url | http://www.mdpi.com/1999-4915/9/2/32 |
| work_keys_str_mv | AT tatianaademina hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae AT maijakpietila hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae AT julijasvirskaite hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae AT jannejravantti hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae AT ninasatanasova hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae AT dennishbamford hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae AT hannamoksanen hciv1andothertaillessicosahedralinternalmembranecontainingvirusesofthefamilysphaerolipoviridae |