Apparent low free magnesium levels in blue crab vas deferens determined by 31P NMR |
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Affiliation: | 1. Magnetic Resonance Center, Department of Radiology, University of Illinois at Chicago, Chicago, IL 60680, U.S.A. (Tel. 312 996-4620; Fax 31;2. Research Resources Center, University of Illinois at Chicago, Chicago, IL 60680, U.S.A. (Tel. 312 996-7600) |
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Abstract: | - 1.1. 31P NMR examination of blue crab vas deferens reveals an α-β ATP chemical shift differences on average of 9.8 ppm.
- 2.2. This implies a free magnesium concentration well below 100 μM.
- 3.3. Thus crab vas deferens represents a new model for a low free magnesium system.
- 4.4. These results also point to a feature of carcine metabolism not previously recognized.
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