Table 2

Presence of sequences involved in chromatin packaging in housekeeping and tissue specific genes.


Human
Mouse
Fruit fly


All genes (%)
HK (%)
TS (%)
All genes (%)
HK (%)
TS (%)
All genes (%)
HK (%)
TS (%)

5' S/MAR
11
5
9
9
3
7
22
16
24
3' S/MAR
13
7
13
10
7
10
21
20
26
5' Poly(dA-dT) ≥ 12 bp
30
31
29
22
28
19
10
10
8
5' Poly(dA-dT) ≥ 15 bp
21
24
20
14
25
13
4
1
0
5' Poly(dA-dT) ≥ 18 bp
13
17
11
8
20
7
1
1
0
5' Poly(dA-dT) ≥ 20 bp
10
13
7
7
10
6
1
1
0
5' (CCGNN)2–5
22
47
20
19
27
12
15
10
16

5' = the sequence is present in the 1500 bp upstream the transcription start, 3' = the sequence is present in the 1500 bp downstream the transcription end, HK = housekeeping, TS = tissue specific.

De Ferrari and Aitken BMC Genomics 2006 7:277   doi:10.1186/1471-2164-7-277