Abstract
The structural gene for ferredoxin I, petF, from the cyanobacterium Anabaena sp. strain PCC 7120 has been isolated from a recombinant lambda library. Mixtures of tetradecanucleotides and heptadecanucleotides, each containing all possible DNA sequences corresponding to two separate regions of the ferredoxin amino acid sequence, were synthesized and used as hybridization probes to identify a genomic clone containing the coding sequence for the petF gene. The sequence of the entire petF coding region and portions of the 3'- and 5'-flanking regions was determined. The DNA sequence of petF suggests that, in contrast to the nucleus-encoded plant protein, cyanobacterial apoferredoxin is not synthesized as a higher-molecular-weight precursor. The Anabaena petF gene is a single-copy gene. During growth on complete medium it was transcribed into a monocistronic mRNA species of approximately 500 bases that initiated 100 base pairs upstream from the petF coding region.
MeSH Terms
Amino Acid Sequence
Bacteriophage lambda/genetics
Base Sequence
Cyanobacteria/genetics
Ferredoxins/genetics
Genes
Genes, Bacterial
RNA, Bacterial/biosynthesis
RNA, Messenger/biosynthesis
Recombinant Proteins/genetics
Species Specificity
Chemicals
Ferredoxins
RNA, Bacterial
RNA, Messenger
Recombinant Proteins
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Alam J
Whitaker R A
Krogmann D W
Curtis S E
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