The DOI matches its Crossref record.
Intracellular pH measurements by phosphorus-31 nuclear magnetic resonance. Influence of factors other than pH on phosphorus-31 chemical shifts
Abstract
Titration curves plotting chemical shift vs. pH for inorganic phosphate and glucose 6-phosphate in solutions of various composition are presented. Physiological concentrations of K+ (0.1 M) and Mg2+ (5 mM) are shown to significantly shift the titration curve. The Mg2+ effect can be partly or completely reversed by addition of sufficient quantities of adenosine triphosphate or organic acids. The acidic protein bovine serum albumin and soluble maize root tip protein have no noticeable effect on the titration curves, whereas the basic protein protamine exerts a profound effect. The results clearly indicate that knowledge of intracellular ionic strength and free Mg2+ concentrations in the sample are required if the determination of intracellular pH by 31P NMR is to be considered accurate within +/- 0.05-01 pH unit.
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Cited by
Manipulating extracellular tumour pH: an effective target for cancer therapy
Hao, G., Xu, Z. P., & Li, L. (2018) · RSC Advances · doi:10.1039/c8ra02095g · Cited by 341
Roberts, J. K., Callis, J., Wemmer, D., Walbot, V, & Jardetzky, O. (1984) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.81.11.3379 · Cited by 303
Self-citationArce‐Rodríguez, A., Volke, D. C., Bense, S., Häussler, S., & Nikel, P. I. (2019) · Microbial Biotechnology · doi:10.1111/1751-7915.13439 · Cited by 40
Metadata
- Authors
- Roberts, J. K. M., Wade-Jardetzky, N., & Jardetsky, O.
- Venue
- Biochemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 1981-09-15
- Volume
- 20
- Issue
- 19
- Pages
- 5389-5394
- ISSN
- 0006-2960 (ISSN-L)
- 1520-4995
- OpenAlex
- W1966679042
- Cited by
- 241
- References
- 0
- FWCI
- 9.45
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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