imported>Gydbwiki at 16:48, 11 November 2009

2009-11-11T16:48:25Z

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{{Element
|genbank=[http://www.ncbi.nlm.nih.gov/entrez/viewer.fcgi?db=nucleotide&val=20197379 AC005398 (nuc; 43778-51134)]
|type=Del
|genus=Chromoviridae
|subfamily=
|family=Ty3/Gypsy
|group=LTR retroid elements
|description=''Tma'' is a LTR retrotransposon characterized from sequencing data in ''Arabidopsis'' ([[Literature:83586|Wright y Voytas 1998]]). ''Tma'' belongs to the ''Chromoviridae'' branch, term suggested ([[Literature:47259|Marín and Lloréns 2000]]) to describe the ''Ty3/Gypsy'' elements bearing chromodomain-integrases ([[Literature:46552|Malik and Eickbush 1999]]). The chromovirus branch is probably the most ancient phylogenetic pattern of ''Ty3/Gypsy'' retroelements ([[Literature:26737|Gorinsek, Gubensek and Kordis 2004]]; [[Literature:26736| 2005]]; [[Literature:39523|Kordis 2005]]).

At the genomic structure level ''Tma'' has several subtypes, the sequence available in the Genbank accession AC005398 is taken as a representative. This clone is 7.3 Kb in size, including LTRs of 1.1 Kb. The internal region displays a Primer Binding Site (PBS), two Open Reading Frames (ORFs) for ''gag'', and ''pol'' genes, and a Polypurine Tract (PPT) adjacent to the 3´LTR ([[Literature:83586|Wright y Voytas 1998]]). This element presents a detectable chromodomain at the C-terminal end of the integrase domain. The PBS of fungi and vertebrate chromoviruses, differs significantly from that used by plant chromoviruses. While plant chromoviruses use a methionine starting tRNA (iMet), fungi and vertebrate chromoviruses use their own self-priming mechanism to start the reverse transcription ([[Literature:43217|Levin 1995 ]]; [[Literature:10125|Butler et al. 2001]]).
|structure=Tma.png
|host=Arabidopsis thaliana
|hostpic=Arabidopsis_thaliana.gif
|literature=*[[Literature:15303|Mobile DNA II. (Craig et al. 2002)]]
|picowner=[http://www.knoch1.de Photo: www.knoch1.de]
}}

Element:Tma - Revision history

imported>Gydbwiki at 16:48, 11 November 2009