15,368 research outputs found

    lin-31, a Caenorhabditis elegans HNF-3/fork head transcription factor homolog, specifies three alternative cell fates in vulva development

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    Late events in the cell-cell signalling pathway that controls the specification of vulva cell fates in C. elegans are characterized. The lin-31 gene acts downstream of the ras homolog let-60 and encodes a member of the HNF-3/fork head family of DNA-binding transcription factors. lin-31 regulates how vulval precursor cells choose their fate and in lin-31 mutants, these cells do not properly choose which fate to express and therefore adopt any of the 3 possible vulval cell fates in a deregulated manner..RE: 68 ref.; SC: CA; PE; 0TSource type: Electronic(1) http://upei-resolver.asin-risa.ca?sid=SP:CABI&id=pmid:&id=&issn=0890-9369&isbn=&volume=7&issue=6&spage=933&pages=933-947&date=1993&title=Genes%20and%20Development&atitle=lin-31%2c%20a%20Caenorhabditis%20elegans%20HNF-3%2ffork%20head%20transcription%20factor%20homolog%2c%20specifies%20three%20alternative%20cell%20fates%20in%20vulva%20development.&aulast=Miller&pid=%3Cauthor%3EMiller%2c%20L%20M%3bGallegos%2c%20M%20E%3bMorisseau%2c%20B%20A%3bKim%2c%20S%20K%3C%2Fauthor%3E%3CAN%3E19932337278%3C%2FAN%3E%3CDT%3EJournal%20article%3C%2FDT%3

    SC author and illustrator Kate Salley Palmer signing book

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    Photograph of SC author and illustrator Kate Salley Palmer signing boo

    Book signing by SC author and illustrator Kate Salley Palmer

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    Photograph of Book signing by SC author and illustrator Kate Salley Palme

    Only full length mutp53 proteins exhibit strong SCS-binding in sc/lin competition assay for scBSK <i>in vitro</i>.

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    <p>A) All mutp53fl proteins selectively recognized scBSK by EMSA. P53 proteins (protein amount expressed as p53/total DNA ratio) were incubated with scBSK (200 ng, lanes 1, 3–25) and linBSK (200 ng, lanes 2–25) and separated on a 1.3% 0.33x TBE agarose gel at 4°C (linDNA migrated faster than scDNA). P53-DNA binding was detected by Et-Br staining of DNA. The conformation of p53 proteins is labeled: white (wtp53), grey (conformation mutants) and black (contact mutants). B) Binding of CΔ30-wtp53 (lanes 4–7), CΔ30-G245S (lanes 8–11), CΔ30-R248W (lanes 12–15) and CΔ30-R175H (lanes 16–19) to pBSK in sc/lin competition asssay was performed similarly to p53fl (A). CΔ30-R248W and CΔ30-R175H lose the ability for strong SCS-binding. Column graph below was plotted on the basis of Et-Br stained DNA on agarose gels (from three independent experiments), free DNA substrates labeled with arrows were measured by densitometry and % of bound DNAs (sc and lin) were calculated the same way as in Fig. 2. C) Preferential binding of CΔ30-wtp53 (lanes 2–4) to linPGM1 in sc/lin competition assay with scBSK, complex of p53-linDNA is bonded.</p
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