Open AccessThe properties of citrate transport catalyzed by CitP of Lactococcus lactis ssp. lactis biovar diacetylactis
Author(s) -
Magni Christian,
López Paloma,
Mendoza Diego
Publication year - 1996
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.1574-6968.1996.tb08441.x
Subject(s) - lactococcus lactis , biovar , permease , biochemistry , chemistry , membrane transport , membrane , bacteria , microbiology and biotechnology , biology , transporter , lactic acid , gene , genetics
Citrate uptake in Lactococcus lactis ssp. lactis biovar diacetylactis ( L. diacetylactis ) is catalysed by a secondary citrate carrier, the citrate permease P (CitP). In this report the mechanism of citrate uptake was investigated in resting cells of L. diacetylactis . The results presented reveal that the pH gradient (ΔpH) and the membrane potential (ΔΨ) are driving forces for citrate uptake. Moreover, it seems that CitP activity requires neither Na + nor Mg 2+ cations.