Table 3. Comparison of transcription factor interaction sites among promoters of α(IV) collagen chains.
The number of sites identified within each promoter is indicated. Each promoter is indicated by the number of α(IV) chains it is located in between. For human α1/α2, mouse α1/α2 and human α3/α4, the first exon of each gene was included to adjust the length of the region compared to be similar to human and mouse α5/α6 promoter.
| Promoter | CCAAT box | CTC box | GC box | AP1 site | AP2 site | E2F site |
|---|---|---|---|---|---|---|
| Human α1/α2 | 1 | 1 | 4 | − | − | − |
| Mouse α1/α2 | 3 | 1 | 4 | 1 | 1 | − |
| Human α3/α4 | − | 2 | 3 | − | 1 | 1 |
| Human α5/α6 | 2 | 1 | − | 3 | − | − |
| Mouse α5/α6 | 1 | 3 | 2 | 3 | − | − |