Open AccessRegulation of urea‐uptake in the cyanobacterium Anabaena doliolum
Author(s) -
Singh Surendra
Publication year - 1988
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.1574-6968.1988.tb03192.x
Subject(s) - urea , urease , acetohydroxamic acid , ammonium , biochemistry , glutamine synthetase , ammonia , glutamine , enzyme , anabaena , chemistry , biology , cyanobacteria , bacteria , amino acid , organic chemistry , genetics
The utilization of urea was studied in the cyanobacterium Anabaena doliolum . The uptake of urea was unaltered in the presence of ammonium. The cells receiving ATP exogenously showed an induced level of urea‐uptake as compared with the control cells. Urease inhibitor acetohydroxamic acid and hydroxyurea as well as glutamate analogue, MSO, did not affect the uptake of urea. These results suggest: (1) urea and ammonia have different uptake sites, (2) urea‐uptake is an energy dependent process, and (3) during short‐term experiments, urea uptake is not linked with the enzyme urease or the ammonium assimilating enzyme glutamine synthetase.