Open AccessMetal‐induced extracellular protein excretion in Arthrobacter aurescens
Author(s) -
Scharf Ram,
Zimmels Yoram,
Kimchie Shlomo
Publication year - 1993
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1993.tb06158.x
Subject(s) - arthrobacter , extracellular , excretion , bacteria , porphyrin , nickel , chemistry , metal , biochemistry , aluminium , biology , microbiology and biotechnology , enzyme , organic chemistry , genetics
The effect of aluminium and other toxic metals on the marine bacterium Arthrobacter aurescens RS‐2 was studied. Apart from inhibiting bacterial growth, aluminium and nickel were found to enhance the excretion of coproporphyrin III, a precursor in the porphyrin biosynthetic pathway. No protein was found to be complexed to the excreted porphyrins. Aluminium and nickel both enhanced the excretion of an extracellular 68 kDa protein and induced the excretion of a novel 42 kDa protein. Despite the similarities in extracellular protein patterns of RS‐2 bacteria after exposure to aluminium or nickel, differences were also found indicating that some but not all response mechanisms towards toxic metals were similar in Arthrobacter aurescens RS‐2.