Results 211 to 220 of about 3,958,355 (265)

S-Adenosylmethionine and protein methylation

Amino Acids, 2005
The enzymes responsible for protein methylation by S-adenosylmethionine, both at the carboxyl groups and at the nitrogen groups, are reviewed. The possibility that the reactions involved may be reversible is also considered.
GRILLO M. A., COLOMBATTO, Sebastiano
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Protein S deficiency: a clinical perspective

Haemophilia, 2008
Summary.  Protein S (PS) is an extensively studied protein with an important function in the down‐regulation of thrombin generation. Because of the presence of a pseudogene and two different forms of PS in plasma, a bound and a free form, it is one of the most difficult thrombophilias to study.
Ten Kate, M. K., Van der Meer, J.
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Acquired protein S deficiency

The Clinical Investigator, 1992
Hereditary deficiencies of coagulation inhibitors like antithrombin III, protein C and protein S lead to an enhanced incidence of thromboembolic complications. Recently, acquired deficiencies of protein S were described in several disease states in which thromboembolic complications frequently occur. These acquired protein S deficiencies reach--in part-
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Analysis of the Protein S Gene in Protein S Deficiency

2003
Protein S (PS) is a 71-kDa vitamin K-dependent glycoprotein first identified in human plasma by DiScipio and colleagues in 1977 (1), a year after the discovery of the anticoagulant protein C (PC) (2,3). A few years later, Walker demonstrated that PS acts as a cofactor for activated protein C (APC) in the proteolytic inactivation of the procoagulant ...
N, Sala, Y, Espinosa-Parrilla
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Nanotechnology with S-Layer Proteins

2013
Nanosciences are distinguished by the cross-fertilization of biology, chemistry, material sciences, and solid-state physics and hence open up a great variety of new opportunities for innovation. The technological utilization of self-assembly systems, wherein molecules spontaneously associate under equilibrium conditions into reproducible supramolecular
Bernhard, Schuster, Uwe B, Sleytr
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Analytical Considerations for Free Protein S Assays in Protein S Deficiency

Thrombosis and Haemostasis, 2001
SummaryProtein S is an anticoagulant protein that circulates in plasma in complex with C4b-binding protein (C4BP) or in free form. Deficiency of protein S increases the risk of venous thrombosis. Measurement of free protein S, as compared to total levels, has been shown to be superior for prediction of protein S deficiency.
K E, Persson, A, Hillarp, B, Dahlbäck
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Oral contraceptives reduce total protein S, but not free protein S.

Thrombosis Research, 1987
This study is an attempt to isolate the mechanism by which oral contraceptives (OCs) despite reduced estrogen content increase the risk of thromboembolitic disease. The subjects were 10 women athletes who had used OCs containing a combination of ethinylestradiol and levonorgestrel for more than a year.
Huisveld, I. A., Hospers, J. E., Meijers, J. C., Starkenburg, A. E., Erich, W. B., Bouma, B. N.   +5 more
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S-Nitrosylation of proteins

Cellular and Molecular Life Sciences, 1999
The transfer of a nitric oxide group to cysteine sulfhydryls on proteins, known as S-nitrosylation, is increasingly becoming recognized as a ubiquitous regulatory reaction comparable to phosphorylation. It represents a form of redox modulation in diverse tissues, including the brain.
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Hereditary Protein S Deficiency

Pathophysiology of Haemostasis and Thrombosis, 1985
Protein S is a vitamin K-dependent plasma protein that serves as a cofactor of activated protein C (APC) in its inhibitory action on activated factor V and factor VIII and in its stimulation of fibrinolytic activity. In plasma, part of the protein S is complexed with the C4b-binding protein. Only the free protein S has APC cofactor activity.
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DSC study of the thermal stability of S-protein and S-peptide/S-protein.

Biochemistry, 1996
The thermal denaturation of S-protein is investigated at pH 7.0 by means of DSC measurements. The process is reversible and can be assimilated to a two-state transition. The low values of denaturation temperature and enthalpy, between 38.5 and 40.0 °C and 165 and 180 kJ mol-1, respectively, demonstrate that the loss of S-peptide strongly decreases the ...
G. GRAZIANO, F. CATANZANO, GIANCOLA, CONCETTA, G. BARONE   +3 more
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