Abstract:
:The hyperpolarisation of the membrane potential in Characeae above that of the diffusion potential is explained by the operation of the electrogenic proton pump. We studied the interaction of calcium with the functioning of the pump. The membrane potential was measured using the standard microelectrode technique. An increase in the calcium concentration resulted in depolarisation, its magnitude increasing with lower proton concentrations. Calcium-induced membrane potential changes, tested in the concentration range of 0.25 mmol/l to 25 mmol/l, were greatest at 0.25 mmol/l CaCl2 and decreased with the increasing calcium concentration. Light-induced initial changes in the membrane potential also showed a dependence on the presence of calcium in the external medium. We conclude that calcium has a role in the regulation of the proton pump in Nitella.
journal_name
Gen Physiol Biophysjournal_title
General physiology and biophysicsauthors
Vuletić M,Vucinić Z,Radenović Csubject
Has Abstractpub_date
1985-04-01 00:00:00pages
195-200issue
2eissn
0231-5882issn
1338-4325journal_volume
4pub_type
杂志文章abstract::The role of vascular endothelial growth factor (VEGF) in chronic stress and neurodevelopmental disorders is of growing research interest. Here we show that post-weaning isolation rearing of rats decreased gene expression of VEGF in the hippocampus. Gene expression of VEGF upstream regulator fibroblast growth factor-2 ...
journal_title:General physiology and biophysics
pub_type: 杂志文章
doi:10.4149/gpb_2019019
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.4149/gpb_2012_039
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
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pub_type: 杂志文章
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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journal_title:General physiology and biophysics
pub_type: 杂志文章
doi:
更新日期:1991-12-01 00:00:00
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pub_type: 杂志文章
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journal_title:General physiology and biophysics
pub_type: 杂志文章
doi:
更新日期:1988-10-01 00:00:00
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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更新日期:1995-12-01 00:00:00
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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更新日期:1983-08-01 00:00:00
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journal_title:General physiology and biophysics
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更新日期:2003-06-01 00:00:00
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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更新日期:1986-08-01 00:00:00
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journal_title:General physiology and biophysics
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journal_title:General physiology and biophysics
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更新日期:2006-06-01 00:00:00
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journal_title:General physiology and biophysics
pub_type: 杂志文章
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