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. 1987 Feb 11;15(3):1271–1280. doi: 10.1093/nar/15.3.1271

Several nodulins of soybean share structural domains but differ in their subcellular locations.

F A Jacobs, M Zhang, M G Fortin, D P Verma
PMCID: PMC340523  PMID: 3822823

Abstract

Four soybean cDNA nodule-specific clones encoding nodulin-23, -26b, -27 and -44 were observed to cross-hybridize under low stringency conditions. Nucleotide sequence analysis revealed that the cDNAs contain three distinct domains: two domains with 70 to 95% homology separated by a third domain unique to each cDNA. Despite a number of nucleotide insertions and deletions, the protein sequences are conserved in the two domains which correlate with the homologous nucleotide domains. The amino terminal domain of each nodulin contains putative signal sequences for membrane translocation, although only two (nodulin-23 and -44) meet all the criteria for a functional signal. Immuno-precipitation of hybrid-release translation products of the four cDNAs revealed that nodulin-23 is associated with the peribacteroid membrane while nodulin-27 is in the cytoplasmic fraction of the nodule. These four nodulins are members of a diverse family with conserved structural features and the genes encoding them appear to have recently evolved from a common ancestor.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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