Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P06889 (Mol)
 630,302 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

1. Intracellular electrolytes, and erythrocyte membrane adenosine triphosphatase (ATPase) activity, was studied in twenty patients after renal transplantation. 2. The mean ouabain-sensitive ATPase activity in the erythrocyte membranes of the transplant patients was 122 nmol of inorganic phosphorus (Pi) h-1 mg of tissue-1 (SEM 14), compared with 62 nmol of Pi h-1 mg of tissue-1 (SEM 8) in a group of paired, healthy controls. 3. The increase in ouabain-sensitive ATPase was most marked in the 4 months after transplantation. However, a significant increase in ouabain-sensitive ATPase persisted for more than 8 months after transplantation. 4. This increase in ouabain-sensitive ATPase was associated with a decrease in intracellular sodium in the erythrocytes of the transplant patients.
Clin Sci Mol Med 1975 Mar
PMID:Changes in erythrocyte membrane ouabain-sensitive adenosine triphosphatase after renal transplantation. 12 85

Poliovirus was grown in HeLa cells in the presence of phosphorus-32 and actinomycin D. Three to four hours after infection, viral mRNA was recovered from polyribosomes and its identity verified by two-dimensional gel electrophoresis of RNase T1 digests. Digestion of the viral [32P]mRNA with RNase T2 and separation of the products by ion exchange chromatography at pH 5 yielded pUp as possible 5' terminus but no "capping group" of the structure m7G(5')ppp(5')Np. Total cytoplasmic [32P]RNA of HeLa cells, on the other hand, was found to contain capping groups. Neither the capping group nor ppNp or pppNp was found in an RNase T2 digest of poliovirion [32P]RNA, in agreement with previous results [Wimmer, E. (1972) J. Mol. Biol. 68, 537-540]. The data indicate that 5'-terminal m7G(5')ppp(5')Np is absent from poliovirus RNAs and, therefore, is not involved in poliovirus protein synthesis.
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PMID:The 5' end of poliovirus mRNA is not capped with m7G(5')ppp(5')Np. 17 6

1. Total-body neutron-activation analysis in vivo was carried out in 11 hypertensive subjects to measure simultaneously the total body content of sodium, chlorine, calcium, phosphorus and nitrogen. 2. There was a highly significant correlation between total body sodium measured by activation analysis and total exchangeable sodium measured by a standard isotope-dilution technique (r = 0.92, P less than 0.001). Exchangeable sodium averaged 80.3% of total body sodium. 3. The measured values of chlorine, calcium, phosphorus and nitrogen were similar to those for healthy subjects reported by others. 4. Activation analysis in vivo appears promising as an additional tool for investigating sodium metabolism in hypertension, as it is the only method available for determining the total body content of this element. The radiation dose (1 rem) is sufficiently low to permit repeated measurements in the same subject.
Clin Sci Mol Med 1978 Feb
PMID:Concurrent estimation of total body and exchangeable body sodium in hypertension. 41 89

1. Three groups of 10-days-old chicks were fed on one of three diets having phosphorus contents of 0.08 mol/kg, 0.14 mol/kg or 0.21 mol/kg. Ten days later duodenal calcium absorption by the ligated loop technique in vivo, and plasma calcium and phosphorus concentrations, were measured. In addition the metabolism in vitro of 25-hydroxycholecalciferol [25-(OH)D3] by kidney homogenates was studied. 2. In the low phosphorus group (0.08 mol/kg) calcium absorption and the activity of 25-(OH)D3-1-hydroxylase were significantly higher than those of the high phosphorus group (0.21 mol/kg). However, in the medium phosphorus group (0.14 mol/kg), calcium absorption was significantly higher although the activity of 25-(OH)D3-1-hydroxylase was not significantly higher when compared with the high phosphorus group (0.21 mol/kg). 3. It is concluded that in phosphorus deprivation, unlike in calcium deprivation, a diet very low in phosphorus is required to stimulate the renal 25-(OH)D3-1-hydroxylase activity.
Clin Sci Mol Med 1978 Feb
PMID:Metabolism in vitro of 25-hydroxycholecalciferol in chicks fed on phosphorus-deficient diets. 62 May 6

1. A method of measuring changes in the total body content of calcium, phosphorus, nitrogen and sodium in rats by activation analysis in vivo is described. 2. The change in the body content of the elements has been measured in rats on a calcium-deficient diet and in control animals, the body nitrogen being used to represent lean body mass for normalization. 3. There were siginificant differences in Ca/N and P/N but not in Ca/P ratios between the animals on a deficient diet and control animals at the end of the dietary period.
Clin Sci Mol Med 1976 Oct
PMID:A study of changes in whole-body calcium, phosphorus, sodium and nitrogen by neutron activation analysis in vivo in rats on a calcium-deficient diet. 97 80

1. Five normal subjects were given 100 ml of aluminium hydroxide gel per day for 28 days. 2. The phosphorus balance became more positive in one subject, less negative in two and changed from negative to positive in the other two subjects. This was accompanied by a rise in the concentration of the fasting morning plasma phosphorus. Calcium balance did not change. 3. The normal subjects absorbed 0-3-3-6 mmol of aluminium/day, which is significantly less than that absorbed by five patients with chronic renal failure, three of whom were studied before, and two after, the observations on the normal subjects had been completed. 4. In a further five normal subjects on 100 ml of aluminium hydroxide gel/day the 08.00 hours concentration of plasma phosphorus did not fall, though there was a fall at 11.00, 14.00 and 17.00 hours.
Clin Sci Mol Med 1976 Oct
PMID:The effect of aluminium hydroxide orally on calcium, phosphorus and aluminium metabolism in normal subjects. 97 81

1. Ligated intestinal segments from rats treated with disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP) at the daily dose of 16 mumol (identical to 1 mg of phosphorus)/kg subcutaneously for 7 days show an increased rate of calcium absorption. 2. This dose of EHDP enhances the intestinal accumulation of a vitamin D3 metabolite with the chromatographic characteristics of 1,25-dihydroxycholecalciferol.
Clin Sci Mol Med 1975 Feb
PMID:Stimulation of calcium absorption and apparent increased intestinal 1,25-dihydroxycholecalciferol in rats treated with low doses of ethane-1-hydroxy-1,1-diphosphonate. 111 34

The rates of renaturation of ultrasonically treated DNA, isolated from fragments of rat liver chromatin, were compared. Chromatographic fractionation on hydroxylapatite was used to fractionate the denatured and renatured DNAs. It was shown that DNA fraction 1 renatures considerably faster than fraction 2. The results are compared with previously published data on the specificity coefficient of DNA, the content of basic amino acids and alkali-labile phosphorus of the protein in the corresponding fragments of the chromatin. The possible functional role of these fragments in the genome is discussed.
Mol Biol 1975 Jan
PMID:Renaturation of DNA from ultrasonically fragmented chromatin. 112 2

The biphasic nature of the time course of the action of staphylococcal nuclease on thymus nucleohistone was confirmed by studying the hydrolysis of this nucleoprotein at various enzyme concentrations. The transition from the rapid first to the sluggish second phase of the time course was particularly distinct at the highest enzyme concentrations. The rapid initial phase of the hydrolysis curve leveled off sharply when between 60 and 65 per cent of the total TNH phosphorus had been converted to acid-soluble phosphorus compounds. The insoluble complexes of TNH with protamines were found to be very resistant against the action of staphylococcal nuclease. The time course of the action of staphylococcal nuclease on a commercial nucleoprotamine of salmon testicles was found to become very sluggish when between 35 and 40 per cent of its total phosphorus had been converted to acid-soluble phosphorus compounds. When nucleoprotamines prepared in the laboratory from the secreted sperm cell suspension of Brown Brook Trout were digested with staphylococcal nuclease, only between 15 and 20 per cent of the total phosphorus were cleaved to acid-soluble phosphorus compounds during the rapid phase of the nuclease action. The respective values for the phosphorus fractions available for magnesium-binding and those susceptible to the rapid cleavage by staphylococcal nuclease were found to be very similar.
Mol Cell Biochem 1975 Mar 27
PMID:The action of staphylococcal nuclease (EC-number 3. 1. 4. 7.) on thymus nucleohistone (TNH) and on some nucleoprotamines. 112 11

Studies on the transport kinetics and the posttranslational modification of synapsin I in mouse retinal ganglion cells were performed to obtain an insight into the possible factors involved in forming the structural and functional differences between the axon and its terminals. Synapsin I, a neuronal phosphoprotein associated with small synaptic vesicles and cytoskeletal elements at the presynaptic terminals, is thought to be involved in modulating neurotransmitter release. The state of phosphorylation of synapsin I in vitro regulates its interaction with both synaptic vesicles and cytoskeletal components, including microtubules and microfilaments. Here we present the first evidence that in the mouse retinal ganglion cells most synapsin I is transported down the axon, together with the cytomatrix proteins, at the same rate as the slow component b of axonal transport, and is phosphorylated at both the head and tail regions. In addition, our data suggest that, after synapsin I has reached the nerve endings, the relative proportions of variously phosphorylated synapsin I molecules change, and that these changes lead to a decrease in the overall content of phosphorus. These results are consistent with the hypothesis that, in vivo, the phosphorylation of synapsin I along the axon prevents the formation of a dense network that could impair organelle movement. On the other hand, the dephosphorylation of synapsin I at the nerve endings may regulate the clustering of small synaptic vesicles and modulate neurotransmitter release by controlling the availability of small synaptic vesicles for exocytosis.
Mol Neurobiol
PMID:Neuronal compartments and axonal transport of synapsin I. 128 34


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