Characterization of SR3 reveals abundance of non-LTR retrotransposons of the RTE clade in the genome of the human blood fluke, Schistosoma mansoni

Table 1 Estimation by bioinformatics approaches of gene copy number of the SR3 non-LTR retrotransposon in the genome of Schistosoma mansoni.

Gene	GenBank Accession	Query Length (bp)	Number of hits (Expect 0.000001)	Copy number	Key references
Cathepsin D, Intron 4	AY309267	1636	0	1	[20]
28S rRNA	Z46503	1694	157	100–200	[46]
Sinbad	AY506538	6288	38	50	[13]
Boudicca	AY662653	5858	100	1,000–10,000	[12]
*SR3*		3211	110	>1,000	This study
SR2	AF025672	3913	102	1,000–10,000	[18]
SR1	U66331	2337	104	200–2,000	[22]
Saci-2	BK004069	4946	107	85–850*	[14]
Saci-1	BK004068	5980	133	70–700*	[14]

ISSN: 1471-2164