An artificial hybrid hemoglobin cu(Co)P(Fe), the (Y and p subunits of which contain cobaltous protoporphyrin IX and ferrous protoporphyrin IX, respectively, and its complementary hybrid cu(Fe)P(Co), were prepared and examined by electron paramagnetic resonance spectroscopy. The fully oxy EPR spectra of cu(Co)p(Fe) and cu(Fe)P(Co) differ in their hyperfine splitting from each other, showing diff...

In cirrhotic patients without renal failure, salt retention could result from a decreased effective intravascular volume or could be a primary event leading to increased intravascular volume. Clearance of urea and uric acid depend on an effective intravascular volume. In the syndrome of inappropriate secretion of antidiuretic hormone (SIADH)--a state of increased intravascular volume--uric acid...

Let Fe be the set of faulty edges of Sn and E0 be the edge set of some pairwise vertex-disjoint paths of Sn. In [5], the authors showed that E0 lies on a Hamiltonian path P (u, v) of Sn−Fe where d(u, v) is odd, |Fe| ≤ n− 3, |E0| ≤ 2n− 7− 2|Fe|. In this paper we improve the previous result as follows: E0 lies on a Hamiltonian path P (u, v) of Sn − Fe where d(u, v) is odd, Fe ≤ n− 3, |E0| ≤ 2n− 6...

The dissimilatory Fe(III) reducer, GS-15, is the first microorganism known to couple the oxidation of aromatic compounds to the reduction of Fe(III) and the first example of a pure culture of any kind known to anaerobically oxidize an aromatic hydrocarbon, toluene. In this study, the metabolism of toluene, phenol, and p-cresol by GS-15 was investigated in more detail. GS-15 grew in an anaerobic...

Studies of phosphorus (P) dynamics in surface sediments of lakes and coastal seas typically emphasize the role of coupled iron (Fe), sulfur (S) and P cycling for sediment P burial and release. Here, we show that anaerobic oxidation of methane (AOM) also may impact sediment P cycling in such systems. Using porewater and sediment profiles for sites in an oligotrophic coastal basin (Bothnian Sea),...

Bioreduced anthraquinone-2,6-disulfonate (AH2DS; dihydro-anthraquinone) was reacted with a 2-line, Si-substituted ferrihydrite under anoxic conditions at neutral pH in PIPES buffer. Phosphate (P) and bicarbonate (C); common adsorptive oxyanions and media/buffer components known to effect ferrihydrite mineralization; and Fe(II)aq (as a catalytic mineralization agent) were used in comparative exp...

The title compound, [Fe(C(8)H(5))(C(22)H(16)P)(C(3)H(9)P)(3)], was synthesized by the addition of phenyl-ethine to a solution of the parent methyl iron complex Fe(CH(3)){P(C(6)H(5))(2)(C(10)H(6))}(PMe(3))(3) at 213 K, accompanied by evolution of methane. The coordination around the iron center can be described as slightly distorted octa-hedral [Fe-P 2.2485 (12)-2.2902 (12) Å; Fe-C 1.918 (5), 2....

In the title compound, [Fe(C(10)H(15))Cl(C(26)H(24)P(2))]·CH(2)Cl(2), the Fe(II) atom is coordinated by two P atoms from a 1,2-bis-(diphenyl-phosphino)ethane ligand [Fe-P = 2.2130 (7) and 2.2231 (7) Å], a chloride anion [Fe-Cl = 2.3329 (7) Å] and a penta-methyl-cyclo-penta-dienyl (Cp*) ligand [Fe-centroid(Cp*) = 1.732 (3) Å] in a typical piano-stool geometry. In the crystal structure, the compl...

Cluster of differentiation molecule (CD)3 and CD28 receptors play crucial roles in T-lymphocyte proliferation. Fe deficiency in man and animals impairs T-lymphocyte proliferation by unknown mechanisms. To test the hypothesis that reduced CD3 and CD28 expression is one of them, thymocytes and splenocytes from control (C; n 24), Fe-deficient (ID; n 24), pair-fed (PF; n 24), and ID mice that were ...