| Literature DB >> 3237206 |
B A Metz1, P Welters, H J Hoffmann, E O Jensen, J Schell, F J de Bruijn.
Abstract
The primary structure of a leghemoglobin (lb) gene from the stem-nodulated, tropical legume Sesbania rostrata and two lb gene promoter regions was analysed. The S. rostrata lb gene structure and Lb amino acid composition were found to be highly conserved with previously described lb genes and Lb proteins. Distinct DNA elements were identified in the S. rostrata lb promoter regions, which share a high degree of homology with cis-active regulatory elements found in the soybean (Glycine max) lbc3 promoter. One conserved DNA element was found to interact specifically with an apparently universal, trans-acting factor present in nuclear extracts of nodules. These results suggest a conserved mechanism for nodule specific induction of lb genes in leguminous plants.Entities:
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Year: 1988 PMID: 3237206 DOI: 10.1007/bf00337709
Source DB: PubMed Journal: Mol Gen Genet ISSN: 0026-8925