Identification and purification of a Bombyx mori homologue of FTZ-F1

Hitoshi Ueda, Susumu Hirose

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


Extracts from embryos and from posterior and middle silk glands of the silkworm, Bombyx mori contain a sequence specific DNA binding factor termed BmFTZ-F1. The factor binds to the recognition site of FTZ-F1, a positive regulator of the fushi tarazu gene in Drosophlla melanogaster. BmFTZ-F1 and FTZ-F1 share the same methylation interference patterns, the same chromatographic behaviors and similar protease digestion profiles. Anti-FTZ-F1 cross reacts with BmFTZ-F1. These results indicate that BmFTZ-F1 is a B.mori homologue of FTZ-F1. The mobility of the factor-DNA complex formed in the silk gland extract changes depending on the developmental stages. Purification of BmFTZF1 to an almost homogeneous state reveals that the factor is a 73 kd protein.

Original languageEnglish
Pages (from-to)7229-7234
Number of pages6
JournalNucleic acids research
Issue number24
Publication statusPublished - 1990
Externally publishedYes

ASJC Scopus subject areas

  • Genetics


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