The subunit structure of ubiquinone-cytochrome c reductase (complex III) has been examined and eight different polypeptides have been identified. Apparent molecular weights for each have been obtained by one or more methods including polyacrylamide gel electrophoresis in sodium doecyl sulfate and in sodium dodecyl sulfate-8 M urea and by gel filtration in sodium dodecyl sulfate and in 6 M guanidine hydrochloride. Values obtained are as follows: I, 47 500; II, 45 500; III, 29 500; IV, 27 800; V, 24 800; VI, 13 900; VII, 10 700; VIII, 4 800-9 00. Individual polypeptides have been purified and the amino acid composition of several of these have been determined. At least one polypeptide, the apoprotein of cytochrome b, is hydrophobic in character and this is a mitochondrially synthesized component (B. Lorenz, W. Kleinow, and H. Weiss (1974), Hoppe-Seyler's Z. Physiol. Chem. 355, 300). Other polypeptides including the hemoprotein of cytochrome c1 are more hydrophilic in amino acid composition.

Amino Acids↗

PubMed1976

Lithium and the thyroid gland.

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Adult↗

PubMed1976

Treatment with thyrotoxicosis with sympatholytic drugs.

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Humans↗

PubMed1976

Bone mineral content.

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Aged↗

PubMed1976

Placental migration.

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Adult↗

PubMed1976

The theory of high-altitide corrections to the U.S. Navy standard decompression tables. The cross corrections.

The theoretical basis for the Cross high-altitude corrections to the USN Standard Decompression Tables is derived. Providing corrections are made for depth and ascent rate and if no decompression stops are made, a dive at altitude can be transformed to a dive at sea level for which the theoretical tissue responses are mathematically similar to the altitude dive. The transformation fails if decompression stops are required due to the fact that the stop criteria used in the USN Tables do not obey the same rule of transformation. It is shown that the failure of the high-altitude correction is expected to be conservative.

Air↗

PubMed1976