Table 2 Frequency of occurrence for Repetitive Elements (REs) overlapping CGIs with different methylation levels (20–60% methylation and 80–100% methylation) in high motile (HM) and low motile (LM) sperm populations. Frequency of occurrence for REs is also reported for Bos taurus genome
HM | LM | GENOME | |||||||
|---|---|---|---|---|---|---|---|---|---|
CGIs methyl. 20–60% | CGIs methyl. 80–100% | CGIs methyl. 20–60% | CGIs methyl. 80–100% | Methyl. ref. genome | |||||
RE type | % | RE type | % | RE type | % | RE type | % | RE type | % |
BTSAT4 | 75.3 | GC-rich | 24 | BTSAT4 | 75.9 | GC-rich | 23.5 | Bov-tA2 | 8.6 |
SSU-rRNA | 4.5 | Bov-tA2 | 3.8 | SSU-rRNA | 4.6 | Bov-tA2 | 4.1 | ART2A | 8.3 |
BTSAT2 | 3.8 | MIRb | 3.4 | BTSAT2 | 3.9 | MIRb | 3.3 | BovB | 6.7 |
GC-rich | 3 | ART2A | 2.6 | GC-rich | 3.3 | C-rich | 2.7 | BOV-A2 | 5.1 |
OSSAT2 | 1.7 | (TG)n | 2.6 | OSSAT2 | 1.7 | ART2A | 2.7 | AT-rich | 4.9 |
BTLTR1 | 1.2 | C-rich | 2.6 | BTLTR1 | 1.2 | (TG)n | 2.6 | Bov-tA1 | 3.7 |
ERV2–1-LTR | 0.9 | (CA)n | 2.2 | ERV2–1-LTR | 0.9 | (CA)n | 2.2 | MIRb | 3.3 |
5S-rRNA | 0.9 | Bov-tA1 | 1.9 | BTSAT3 | 0.8 | Bov-tA1 | 2 | MIR | 2.5 |
BTSAT3 | 0.7 | MIR | 1.9 | 5S-rRNA | 0.7 | CHR-2A | 1.8 | L2a | 2.2 |
LSU-rRNA | 0.6 | CHR-2A | 1.8 | LSU-rRNA | 0.5 | BovB | 1.8 | L1–2 | 2.1 |
G-rich | 0.4 | G-rich | 1.7 | BovB | 0.4 | MIR | 1.7 | L1 | 1.8 |
(CA)n | 0.4 | BovB | 1.6 | G-rich | 0.4 | BOV-A2 | 1.7 | L2c | 1.6 |
(CGGGG)n | 0.4 | BOV-A2 | 1.6 | (CGGGG)n | 0.4 | G-rich | 1.6 | Bov-tA3 | 1.6 |
Bov-tA2 | 0.3 | L2b | 1.5 | (CA)n | 0.4 | L2b | 1.5 | BTLTR1 | 1.5 |
BovB | 0.3 | L1–2 | 1.5 | C-rich | 0.3 | L1–2 | 1.5 | L2b | 1.3 |
(TG)n | 0.3 | MIR3 | 1.4 | (TG)n | 0.2 | CHR-2B | 1.4 | MIRc | 1.2 |
(CGTG)n | 0.3 | CHR-2B | 1.3 | (CCCCAG)n | 0.2 | MIR3 | 1.4 | MIR3 | 1.2 |
Bov-tA3 | 0.3 | MLT1B | 1.1 | (CGG)n | 0.2 | MIRc | 1.1 | L1 | 1.2 |
C-rich | 0.3 | MIRc | 1.1 | L1–3 | 0.2 | MLT1B | 1.1 | L1–3 | 1.1 |