Formyl peptide receptor 3 (FPR3) is a potential player in innate immunity and appears with FPR2 as a FPR cluster during primate evolution. Comparative genome analyses indicate that a segmental duplication (SD) event upstream of the FPR3 gene after the divergence of New and Old World monkeys led to the emergence of an alternative promoter. In this study we combined computational and experimental approaches to identify a FPR3 gene that is controlled by an alternative promoter derived during a SD event. Its transcriptional activity was detected by quantitative reverse transcription polymerase chain reaction. Human alternative transcripts (FPR3-1 and FPR3-2) showed tissue-specific patterns with strong expressions in lung or uterus, while the FPR3-1 transcript of rhesus macaque is broadly expressed in various tissues. Overall, transcriptional variations of FPR3 occur by an alternative promoter during primate evolution.
Mammalian Genome – Springer Journals
Published: Jun 30, 2011
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