Cysteine uptake by Saccharomyces cerevisiae is accomplished by multiple permeases
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Cysteine uptake by Saccharomyces cerevisiae is accomplished by multiple permeases. / Düring-Olsen, Louis; Regenberg, Birgitte; Gjermansen, Claes; Kielland-Brandt, Morten C.; Hansen, Jørgen.
In: Current Genetics, Vol. 35, No. 6, 15.08.1999, p. 609-617.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Cysteine uptake by Saccharomyces cerevisiae is accomplished by multiple permeases
AU - Düring-Olsen, Louis
AU - Regenberg, Birgitte
AU - Gjermansen, Claes
AU - Kielland-Brandt, Morten C.
AU - Hansen, Jørgen
PY - 1999/8/15
Y1 - 1999/8/15
N2 - Uptake by Saccharomyces cerevisiae of the sulphur-containing amino acid L-cysteine was found to be non-saturable under various conditions, and uptake kinetics suggested the existence of two or more transport systems in addition to the general amino-acid permease, Gap1p. Overexpression studies identified BAP2, BAP3, AGP1 and GNP1 as genes encoding transporters of cysteine. Uptake studies with disruption mutants confirmed this. and identified two additional genes for transporters of cysteine, TAT1 and TAT2, both very homologous to BAP2, BAP3, AGP1 and GNP1. While Gap 1p and Agp 1p appear to be the main cysteine transporters on the non-repressing nitrogen source proline, Bap2p, Bap3p, Tat1p, Tat2p, Agp1p and Gnp1p are all important for cysteine uptake on ammonium-based medium. Furthermore, whereas Bap2p, Bap3p, Tat1p and Tat2p seem most important under amino acid-rich conditions, Agp 1p contributes significantly when only ammonium is present, and Gnp1p only contributes under the latter condition.
AB - Uptake by Saccharomyces cerevisiae of the sulphur-containing amino acid L-cysteine was found to be non-saturable under various conditions, and uptake kinetics suggested the existence of two or more transport systems in addition to the general amino-acid permease, Gap1p. Overexpression studies identified BAP2, BAP3, AGP1 and GNP1 as genes encoding transporters of cysteine. Uptake studies with disruption mutants confirmed this. and identified two additional genes for transporters of cysteine, TAT1 and TAT2, both very homologous to BAP2, BAP3, AGP1 and GNP1. While Gap 1p and Agp 1p appear to be the main cysteine transporters on the non-repressing nitrogen source proline, Bap2p, Bap3p, Tat1p, Tat2p, Agp1p and Gnp1p are all important for cysteine uptake on ammonium-based medium. Furthermore, whereas Bap2p, Bap3p, Tat1p and Tat2p seem most important under amino acid-rich conditions, Agp 1p contributes significantly when only ammonium is present, and Gnp1p only contributes under the latter condition.
KW - Amino-acid permeases
KW - Cysteine uptake
KW - Saccharomyces cerevisiae
UR - http://www.scopus.com/inward/record.url?scp=0032801817&partnerID=8YFLogxK
U2 - 10.1007/s002940050459
DO - 10.1007/s002940050459
M3 - Journal article
C2 - 10467005
AN - SCOPUS:0032801817
VL - 35
SP - 609
EP - 617
JO - Current Genetics
JF - Current Genetics
SN - 0172-8083
IS - 6
ER -
ID: 239906267