Abstract
We determined the H+ and Ca2+ uptake by fission yeast membranes separated on sucrose gradient and found that (i) Ca2+ sequestering is due to Ca2+/H+ antiporter(s) localized to secretory pathway organelles while Ca2+‐ATPase activity is not detectable in their membranes; (ii) immunochemically distinct V‐H+‐ATPases acidify the lumen of the secretory pathway organelles. The data indicate that the endoplasmic reticulum, Golgi and vacuole form a network of Ca2+ and H+ stores in the single cell, providing favorable conditions for such key processes as protein folding/sorting, membrane fusion, ion homeostasis and Ca2+ signaling in a differential and local manner.
References
32
Referenced
18
10.1242/jeb.196.1.157
10.1105/tpc.11.4.691
- Schizosaccharomyces pombeGenome Sequencing Project http://www.sanger.ac.uk/Projects/S_pombe/.
10.1016/S0021-9258(17)44766-1
10.1016/S0021-9258(19)68523-6
10.1016/0014-5793(83)80218-X
10.1111/j.1432-1033.1993.tb18176.x
10.1007/BF02818995
10.1111/j.1574-6968.1998.tb12982.x
10.1074/jbc.272.15.9895
10.1073/pnas.85.21.7972
10.1016/0003-9861(92)90416-T
10.1128/mr.54.3.266-292.1990
10.1152/physrev.1999.79.2.361
10.1073/pnas.86.18.6935
10.1002/yea.320050105
10.1016/S0021-9258(18)48084-2
10.1016/S0021-9258(17)37279-4
10.1038/27686
10.1146/annurev.cellbio.13.1.779
10.1016/S0005-2736(00)00129-2
10.1105/tpc.9.4.533
10.1242/jeb.203.1.61
10.1146/annurev.bi.61.070192.002351
10.1038/25133
10.1016/S0021-9258(17)36755-8
10.1074/jbc.M010790200
10.1128/MCB.16.5.2226
10.1128/MCB.16.7.3730
10.1247/csf.21.413
10.1016/0092-8674(89)90019-6
10.1016/S0021-9258(19)38530-8
Dates
Type | When |
---|---|
Created | 22 years, 10 months ago (Oct. 14, 2002, 11:56 a.m.) |
Deposited | 1 year, 11 months ago (Sept. 16, 2023, 5:17 a.m.) |
Indexed | 1 year, 9 months ago (Nov. 18, 2023, 4:49 a.m.) |
Issued | 23 years, 11 months ago (Sept. 13, 2001) |
Published | 23 years, 11 months ago (Sept. 13, 2001) |
Published Online | 23 years, 11 months ago (Sept. 13, 2001) |
Published Print | 23 years, 11 months ago (Sept. 14, 2001) |
@article{Okorokov_2001, title={Ca2+ and H+ homeostasis in fission yeast: a role of Ca2+/H+ exchange and distinct V‐H+‐ATPases of the secretory pathway organelles}, volume={505}, ISSN={1873-3468}, url={http://dx.doi.org/10.1016/s0014-5793(01)02852-6}, DOI={10.1016/s0014-5793(01)02852-6}, number={2}, journal={FEBS Letters}, publisher={Wiley}, author={Okorokov, Lev A and Silva, Flavia E and Okorokova Façanha, Anna L}, year={2001}, month=sep, pages={321–324} }