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Objective The COL1A1 proximal promoter contains two GC-rich regions and two inverted CCAAT boxes. The transcription factors Sp1 and CBF bind to the GC sequence at −122 to −115 bp and the inverted CCAAT box at −101 to −96 bp, respectively, and stimulate COL1A1 transcriptional activity.
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Hitraya et al. (2024) studied this question.
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