ISSN:
1617-4623
Keywords:
Cyanobacteria
;
DNA sequence
;
Ribosomal protein
;
Elongation factors
;
str operon
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary A 5.3 kb DNA segment containing the str operon (ca. 4.5 kb) of the cyanobacterium Spirulina platensis has been sequenced. The str operon includes the structural genes rpsL (ribosomal protein S12), rpsG (ribosomal protein S7), fus (translation elngation factor EF-G) and tuf (translation elongation factor EF-Tu). From the nucleotide sequence of this operon, the primary structures of the four gene products have been derived and compared with the available corresponding structures from eubacteria, archaebacteria and chloroplasts. Extensive homologies were found in almost all cases and in the order S12〉EF-Tu〉EF-G〉S7; the largest homologies were generally found between the cyanobacterial proteins and the corresponding chloroplast gene products. Overall codon usage in S. platensis was found to be rather unbiased.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00330947
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