Sperm motility initiation factor is a minor component of the Pacific herring egg chorion

The degree of (de)protonation of aqueous metal species has significant consequences for the kinetics of complex formation/dissociation. All protonated forms of both the ligand and the hydrated central metal ion contribute to the rate of complex formation to an extent weighted by the pertaining outer-sphere stabilities. Likewise, the lifetime of the uncomplexed metal is determined by all the various protonated ligand species. Therefore, the interfacial reaction layer thickness, μ, and the ensuing kinetic flux, Jkin, are more involved than in the conventional case. All inner-sphere complexes contribute to the overall rate of dissociation, as weighted by their respective rate constants for dissociation, kd. The presence of inner-sphere deprotonated H2O, or of outer-sphere protonated ligand, generally has a great impact on kd of the inner-sphere complex. Consequently, the overall flux can be dominated by a species that is a minor component of the bulk speciation. The concepts are shown to provide a good description of experimental stripping chronopotentiometric data for several protonated metal–ligand systems.

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A minor component of the binding of [3H]guanyl-5'-yl imidodiphosphate to cardiac membranes associated with the activation of adenylate cyclase.

Journal of Biological Chemistry ◽

10.1016/s0021-9258(18)43367-4 ◽

1981 ◽

Vol 256 (15) ◽

pp. 7925-7931

Author(s):

S.P. Baker ◽

L.T. Potter

Keyword(s):

Adenylate Cyclase ◽

Minor Component ◽

Cardiac Membranes ◽

A Minor

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Activation of protein tyrosine kinase p72syk by Fc epsilon RI aggregation in rat basophilic leukemia cells. p72syk is a minor component but the major protein tyrosine kinase of pp72

Journal of Biological Chemistry ◽

10.1016/s0021-9258(19)89475-9 ◽

1994 ◽

Vol 269 (24) ◽

pp. 16902-16908

Author(s):

K. Minoguchi ◽

M. Benhamou ◽

W.D. Swaim ◽

Y. Kawakami ◽

T. Kawakami ◽

...

Keyword(s):

Tyrosine Kinase ◽

Protein Tyrosine Kinase ◽

Minor Component ◽

Leukemia Cells ◽

Major Protein ◽

Protein Tyrosine ◽

Rat Basophilic Leukemia Cells ◽

A Minor ◽

Basophilic Leukemia

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Petrography and provenance of the Marambio Group, Vega Island, Antarctica

Antarctic Science ◽

10.1017/s0954102094000775 ◽

1994 ◽

Vol 6 (4) ◽

pp. 517-527 ◽

Cited By ~ 12

Author(s):

Duncan Pirrie

Keyword(s):

Late Cretaceous ◽

Sedimentary Rocks ◽

Clay Mineralogy ◽

Minor Component ◽

Source Area ◽

Low Grade ◽

Western Margin ◽

Sediment Input ◽

A Minor ◽

Sandstone Petrography

Late Cretaceous sedimentary rocks assigned to the Santa Marta (Herbert Sound Member) and López de Bertodano (Cape Lamb and Sandwich Bluff members) formations of the Marambio Group, crop out on Cape Lamb, Vega Island. Although previous studies have recognized that these sedimentary rocks were derived from the northern Antarctic Peninsula region, the work presented here allows the provenance and palaeogeographical evolution of the region to be described in detail. On the basis of both sandstone petrography and clay mineralogy, the Herbert Sound and Cape Lamb members reflect sediment input from a low relief source area, with sand grade sediment sourced from low grade metasediments, and clay grade sediment ultimately derived from the weathering of an andesitic source area. In contrast, the Sandwich Bluff Member reflects a switch to a predominantly andesitic volcaniclastic source. However, this sediment was largely derived from older volcanic suites due to renewed source area uplift, with only a minor component from coeval volcanism. Regional uplift of both the arc terrane and the western margin of the James Ross Basin was likely during the Maastrichtian.

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Species pattern of phosphatidylinositol from lung surfactant and a comparison of the species pattern of phosphatidylinositol and phosphatidylglycerol synthesized de novo in lung microsomal fractions

Biochemical Journal ◽

10.1042/bj2540067 ◽

1988 ◽

Vol 254 (1) ◽

pp. 67-71 ◽

Cited By ~ 9

Author(s):

B Rüstow ◽

Y Nakagawa ◽

H Rabe ◽

K Waku ◽

D Kunze

Keyword(s):

Lung Function ◽

Molecular Species ◽

De Novo ◽

Lung Surfactant ◽

Minor Component ◽

Main Species ◽

Surfactant Phospholipids ◽

Species Pattern ◽

A Minor

1. Phosphatidylinositol (PI) is a minor component of lung surfactant which may be able to replace the functionally important phosphatidylglycerol (PG) [Beppu, Clements & Goerke (1983) J. Appl. Physiol. 55, 496-502] without disturbing lung function. The dipalmitoyl species is one of the main species for both PI (14.4%) and PG (16.9%). Besides the C16:0--C16:0 species, the C16:0--C18:0, C16:0--C18:1, C16:0--C18:2 and C18:0--C18:1 species showed comparable proportions in the PG and PI fractions. These similarities of the species patterns and the acidic character of both phospholipids could explain why surfactant PG may be replaced by PI. 2. PI and PG were radiolabelled by incubation of microsomal fractions with [14C]glycerol 3-phosphate (Gro3P). For 11 out of 14 molecular species of PI and PG we measured comparable proportions of radioactivity. The radioactivity of these 11 species accounted together for more than 80% of the total. The addition of inositol to the incubation system decreased the incorporation in vitro of Gro3P into PG and CDP-DG (diacylglycerol) of lung microsomes (microsomal fractions), but did not change the distribution of radioactivity among the molecular species of PG. These results supported the idea that both acidic surfactant phospholipids may be synthesized de novo from a common CDP-DG pool in lung microsomes.

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