Mitochondria, the major site of synthesis for energy rich phosphate bonds in animal tissues, have been alluded to as the ionic pumps in cells because of the action of energy rich compounds in the control of osmotic properties (1, 2). Since the work of Raaflaub (3, 4) there have been several reports (1, 5-8) that adenosine triphosphate plus magnesium or manganous ions can reverse or prevent swel...

Mitochondrial Cytochrome Oxidase Subunit I DNA sequences are a good discriminative marker for phylogenetic studies in crustaceans and especially in amphipoda. In the present study, molecular and morphological data were analyzed to test whether Gammarus lobifer authority and Gammarus balutchi authority which one or two geographically separated but morphologically similar species. The analyses pr...

Rodents from the subfamily Gerbillinae Gray, 1825, are an important component of small fauna in arid and desertic regions Africa Asia. Among this group rodents, Sundevall’s jird, Meriones crassus, is one most widespread desert species, found countries ranging Morocco to Pakistan. In study, we sequenced cytochrome b gene mitochondrial DNA two specimens captured Morocco, constituting first geneti...

The pygmy whitefish Prosopium coulterii (C. H. Eigenmann & R. S. Eigenmann, 1892) is a freshwater fish with highly disjunct distribution ranging from the middle part of North America to Chukotka. There still no consensus regarding its phylogeny and dispersal history due limited information Chukotkan range. We investigated 22 lakes over Chukotka found much broader than it was previously thou...

Previous studies have shown that angiotensin I1 increases aldosterone biosynthesis, but the mechanisms involved have not been clearly defined. The present studies were carried out to examine the effects of angiotensin I1 on cytochrome P-450 enzymes of the rat adrenal cortex. Microsomal and mitochondrial cytochrome P-450 levels in the zona glomerulosa were not affected by angiotensin I1 administ...

Hemiculter leucisclus , as a widely distributed freshwater fish in China, provides an interesting model to explore the impact of drainage evolution and geologic history Pleistocene on diversification patterns. We collected mitochondrial cytochrome b (cytb) gene recombination activating 2 (RAG2) from 1,070 individuals 59 sampling locations. Phylogenetic population genetic approaches were used de...

Mitochondrial succinate-ubiquinone reductase is composed of two parts, a water-soluble succinate dehydrogenase and a two-polypeptide membrane-anchoring protein fraction (QPs). The larger polypeptide of QPs is believed to be associated with cytochrome bas, (QPsl). The structure of QPsl was studied by immunochemistry and molecular cloning and sequencing. Antibodies against QPsl were raised in r...

The mechanism of cytochrome induction in human cells was investigated. Cultured fibroblasts grown in low oxygen had markedly reduced contents of cytochromes A + A(3), B, and C + C(1) as measured by absorption spectra. Chloramphenicol but not cycloheximide or actinomycin blocked the initial increase in cytochrome oxidase activity in cells shifted from low to ambient oxygen, suggesting that initi...