From The Gypsy Database


Spirobel is a LTR retrotransposon described in the genome of the nematode parasite Trichinella spiralis. Its name is an acronym derived from "Trichinella spiralis Bel/Pao element". Spirobel belongs to the Tas clade (Copeland et al. 2005) within Branch 1 of the Bel/Pao family (Llorens et al. 2009). Spirobel genome (5428 bp long) encodes for a single ORF containing both putative gag and pol domains. The gag nucleocapsid protein contains the three zinc-finger motifs of Cys-His type, while the pol presents the AP, RT, RH and INT associated domains. To date there is no information available of Spirobel LTRs.



Figure not to scale. If present, long terminal repeats (LTRs) have been highlighted in blue. Amino acid motifs noted with lines indicate the conserved residues in each protein domain, abbreviations below mean:

MA=matrix PR=protease DU or DUT=dUTPase TM=transmembrane TAV or IBMP=transactivator/viroplasmin or inclusion body matrix protein
CA=capsid RT=reverse transcriptase INT=Integrase CHR=chromodomain
NC=nucleocapsid RH=RNaseH SU=surface MOV=movement protein
PPT=polypurine tract PBS=primer binding site ATF=aphid transmission factor VAP=virion associated protein

Related literature

Genbank accession:109716041
Cluster or genus:Undetermined
Branch or class:Branch 1
System:LTR retroelements
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Trichinella spiralis.png
Trichinella spiralis
Courtesy of Dickson Despommier, Columbia University
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