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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Critical spacing between two essential cysteine residues in the interdomain linker of the Bradyrhizobium japonicum NifA protein.

A special sequence motif in the Bradyrhizobium japonicum NifA protein, consisting of two functionally essential cysteines separated by four other amino acids (Cys-aa4-Cys), has been proposed to be part of a potential metal-binding site [(1988) Nucleic Acids Res. 16, 2207-2224]. Using the techniques of oligonucleotide-directed mutagenesis, we report here that several of the four intervening amino acids can be replaced by others without loss of NifA function. The deletion of one amino acid to give a Cys-aa3-Cys motif renders the protein inactive whereas the creation of a Cys-aa5-Cys motif (one amino acid inserted) still leads to a partially active NifA protein.[1]

References

  1. Critical spacing between two essential cysteine residues in the interdomain linker of the Bradyrhizobium japonicum NifA protein. Fischer, H.M., Fritsche, S., Herzog, B., Hennecke, H. FEBS Lett. (1989) [Pubmed]
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