Multiple zinc finger forms resulting from developmentally regulated alternative splicing of a transcription factor gene.
Transcripts encoding the Drosophila putative transcription factor CF2 are subject to developmentally regulated alternative splicing, and they encode protein isoforms that differ in the number of zinc fingers. One testis-specific RNA encodes an isoform that includes three zinc fingers and a frame-shifted segment. Two other transcripts encode isoforms with six and seven zinc fingers which bind to distinct promoters and DNA target sequences. Thus, because of alternative splicing, a single gene appears to encode distinct DNA-binding proteins, each capable of regulating different gene sets in different tissues and developmental periods.
Hsu
T
T
Department of Cellular and Developmental Biology, Harvard University, Cambridge, MA 02138.
Gogos
J A
JA
Kirsh
S A
SA
Kafatos
F C
FC
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002823:Chorion; D004268:DNA-Binding Proteins / Q000235:genetics*; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000235:genetics; D005786:Gene Expression Regulation; D005796:Genes; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides / Q000737:chemistry; D016133:Polymerase Chain Reaction; D012326:RNA Splicing; D012333:RNA, Messenger / Q000235:genetics; D016415:Sequence Alignment; D014157:Transcription Factors / Q000235:genetics*; D016335:Zinc Fingers
D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; D009838:Oligodeoxyribonucleotides; D012333:RNA, Messenger; D014157:Transcription Factors; C076904:Cf2 protein, Drosophila