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| MULTIPLE ELEMENTS AND AUTO-REPRESSION REGULATE ROX1, A REPRESSOR OF HYPOXIC GENES IN SACCHAROMYCES-CEREVISIAE |
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| Author(s): DECKERT J, PERINI R, BALASUBRAMANIAN B, ZITOMER RS |
| Source: GENETICS Volume: 139 Issue: 3 Pages: 1149-1158 Published: MAR 1995 |
| Times Cited: 74 References: 34 |
| Abstract: The ROX1 gene encodes a heme-induced repressor of hypoxic genes in yeast. Using RNA blot analysis and a ROX1/lacZ fusion construct that included the ROX1 upstream region and only the first codon, we discovered that Rox1 represses its own expression. Gel-retardation experiments indicated that Rox1 was capable of binding to its own upstream region. Overexpression of Rox1 from the inducible GAL1 promoter was found to be inhibitory to cell growth. Also, we found that, as reported previously, Hap1 is partially responsible for heme-induction of ROX1, but, in addition, it also may play a role in ROX1 repression in the absence of heme. There is a second repressor of anaerobic ROX1 expression that requires the general repressor Tup1/Ssn6 for its function. |
| Document Type: Article |
| Language: English |
Addresses:
1. SUNY ALBANY, DEPT BIOL SCI, ALBANY, NY 12222 USA |
| Publisher: GENETICS, 428 EAST PRESTON ST, BALTIMORE, MD 21202 |
| Subject Category: Genetics & Heredity |
| IDS Number: QJ968 |
| ISSN: 0016-6731 |
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