Results 91 to 100 of about 17,634 (253)

The Third Sodium Binding Site of Na,K-ATPase Is Functionally Linked to Acidic pH-Activated Inward Current [PDF]

open access: yes, 2018
Sodium- and potassium-activated adenosine triphosphatases (Na,K-ATPase) is the ubiquitous active transport system that maintains the Na+ and K+ gradients across the plasma membrane by exchanging three intracellular Na+ ions against two extracellular K ...
Geering, Käthi   +2 more
core  

Carcinogenic oestrogens induce respiration deficiency mutation in yeast [PDF]

open access: yes, 1991
In addition to hormonal activity, genetic darnage has been proposed as an important factor in oestrogen-mediated carcinogenesis. However, as short-term tests for oestrogens usually fail to show DNA mutations, lesions other than dassie nuclear DNA ...
Metzler, M., Stopper, Helga
core  

Chromosome structure: improved immunolabeling for electron microscopy [PDF]

open access: yes, 2018
To structurally dissect mitotic chromosomes, we aim to position along the folded chromatin fiber proteins involved in long-range order, such as topoisomerase IIα (topoIIα) and condensin.
Eltsov, Michail   +2 more
core  

Influence of Histamine on Adenosine Triphosphatase

open access: yesExperimental Biology and Medicine, 1948
In all snake venoms hitherto investigated a powerful ATP-ase (ophio-ATP-ase) has been found, which is activated by magnesium, calcium and cobalt ions and inhibited by zinc ions.1,2 Histamine and pyridoxamine act as inhibitors, epinephrine as activator.The question arose as to whether similar reactions take place in the animal tissues and thus ...
openaire   +2 more sources

Effects of pesticides and antibiotics on penaeid shrimp with special emphases on behavioral and biomarker responses [PDF]

open access: yes, 2010
The purpose of the present study is to provide information on the current state of knowledge regarding the effects of pesticides and antibiotics used in aquaculture on penaeid shrimp, one of the most common aquatic products for human consumption, with a ...
Kestemont, P.   +3 more
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Chimeric design, synthesis, and biological assays of a new nonpeptide insulin-mimetic vanadium compound to inhibit protein tyrosine phosphatase 1B [PDF]

open access: yes, 2010
Prior to its total synthesis, a new vanadium coordination compound, called TSAG0101, was computationally designed to inhibit the enzyme protein tyrosine phosphatase 1B (PTP1B). The PTP1B acts as a negative regulator of insulin signaling by blocking the
Do, Quoc Tuan   +5 more
core  

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