{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T07:10:03Z","timestamp":1791184203696,"version":"4.1.0"},"reference-count":51,"publisher":"The Company of Biologists","issue":"23","license":[{"start":{"date-parts":[[1998,12,1]],"date-time":"1998-12-01T00:00:00Z","timestamp":912470400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/www.biologists.com\/user-licence-1-1\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1998,12,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n               <jats:p>During hair growth, cortical cells emerging from the proliferative follicle bulb rapidly undergo a differentiation program and synthesise large amounts of hair keratin proteins. To identify some of the controls that specify expression of hair genes we have defined the minimal promoter of the wool keratin intermediate filament gene K2.10. The region of this gene spanning nucleotides \u2013350 to +53 was sufficient to direct expression of the lacZ gene to the follicle cortex of transgenic mice but deletion of nucleotides \u2013350 to \u2013150 led to a complete loss of promoter activity. When a four base substitution mutation was introduced into the minimal functional promoter at the binding site for lymphoid enhancer factor 1 (LEF-1), promoter activity in transgenic mice was decreased but specificity was not affected. To investigate the interaction of trans-acting factors within the minimal K2.10 promoter we performed DNase I footprinting analyses and electrophoretic mobility shift assays. In addition to LEF-1, Sp1, AP2-like and NF1-like proteins bound to the promoter. The Sp1 and AP2-like proteins bound sequences flanking the LEF-1 binding site whereas the NF1-like proteins bound closer to the transcription start site. We conclude that the LEF-1 binding site is an enhancer element of the K2.10 promoter in the hair follicle cortex and that factors other than LEF-1 regulate promoter tissue- and differentiation-specificity.<\/jats:p>","DOI":"10.1242\/jcs.111.23.3487","type":"journal-article","created":{"date-parts":[[2021,4,25]],"date-time":"2021-04-25T17:01:37Z","timestamp":1619370097000},"page":"3487-3496","source":"Crossref","is-referenced-by-count":31,"title":["Regulation of a hair follicle keratin intermediate filament gene promoter"],"prefix":"10.1242","volume":"111","author":[{"given":"S. M.","family":"Dunn","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. A.","family":"Keough","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G. E.","family":"Rogers","sequence":"additional","affiliation":[{"name":"University of Adelaide Department of Animal Science , , Waite Campus, Glen Osmond, South Australia 5064, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B. C.","family":"Powell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","published-online":{"date-parts":[[1998,12,1]]},"reference":[{"key":"2024010700443122900_JOCES_111_23_3487C1","doi-asserted-by":"publisher","first-page":"6975","DOI":"10.1074\/jbc.270.12.6975","article-title":"NF1-L is the DNA-binding component of the protein complex at the peripherin negative regulatory element","volume":"270","author":"Adams","year":"1995","journal-title":"J. Biol. 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