Table 1.

G+C- and retrotransposon content of genomic sequences flanking SVA de novo insertions

SVA insertion	G+C 5 kb (%)	Alu 5 kb (%)	L1 5 kb (%)	G+C 30 kb (%)	Alu 30 kb (%)	L1 30 kb (%)
1	46.44	35.8	1.52	43.91	45.51	7.04
2	42.40	44.54	–	42.32	31.01	9.42
3	40.57	40.86	3.58	40.54	36.62	2.74
4	48.39	39.88	–	45.98	44.36	7.88
5	38.93	13.54	22.28	42.30	16.52	6.11
6	40.03	17.34	–	38.28	11.81	–
7	39.42	36.42	11.62	42.41	19.89	1.94
8	45.43	39.92	2.66	47.02	36.46	7.30
9	50.85	13.28	–	49.17	12.26	7.28
10	44.81	29.96	24.1	48.75	31.78	5.75
11	47.00	32.98	0.48	45.42	30.25	4.19
Arith. Mean 1–11	44.02	31.32	5.21	44.19	28.77	5.97
Genome average	40.91	10.60	16.89	40.91	10.60	16.89

Analyzed sequences encompass 5-kb and 30-kb windows; G+C 5 kb/G+C 30 kb, G+C content (in percent) of 5-kb or 30-kb genomic sequence windows flanking the SVA de novo insertions; Alu 5 kb/Alu 30 kb (L1 5 kb/L1 30 kb), fraction of Alu (L1) sequences (in percent) covering 5-kb or 30-kb genomic sequence windows flanking the SVA de novo insertion.