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Showing papers in "Biochimica et Biophysica Acta in 1982"


Journal ArticleDOI
TL;DR: It is shown that the increase in T-1(2) with increasing blood deoxygenation arises from diffusion of water through these field gradients, which increases the volume magnetic susceptibility within the erythrocytes and thus creates local fieldgradients around these cells.

1,100 citations



Journal ArticleDOI
TL;DR: The cell sap from pig liver contains a protein which protects phosphatidylcholine liposomes and biomembranes from peroxidative degradation in the presence of glutathione, and this protein appears to be distinct from the selenoenzyme glutATHioneperoxidase and from any known glutathion S-transferase.

668 citations






Journal ArticleDOI
TL;DR: It is proposed that the carbohydrate acts as a chemical ‘tag’ which, upon interaction with a specific intracellular membrane receptor, directs glycoproteins to specific cellular organelles following synthesis on the rough endoplasmic reticulum.

412 citations



Journal ArticleDOI
Mats Rånby1
TL;DR: Fibrin was found to stimulate greatly (up to 1000-fold) the steady-state activation rate of plasminogen activation and a theory for the fibrin stimulating mechanism is presented.

335 citations


Journal ArticleDOI
TL;DR: In this paper, the authors showed that the light-induced decline of chlorophyll a fluorescence from a peak (P) to a low stationary level (S) in intact, physiologically active isolated chloroplasts and in intact Chlorella cells is predominantly composed of two components: (1) fluorescence quenching by partial reoxidation of the quencher Q, the primary acceptor of Photosystem II and (2) energy-dependent fluorescence qenching related to the photoinduced acidification of the intrathylakoid space.

Journal ArticleDOI
TL;DR: Like the enzyme in normal and regenerating liver cells, the hepatoma enzyme was shown to have a higher phase transition temperature and lower activation energies and the activity was increased by the dephosphorylation of plasma membranes and unaffected by the phosphorylation.

Journal ArticleDOI
TL;DR: The identification of the thermoluminescence at 25°C is based upon the following experimental evidence: illumination of chloroplasts in the presence of methyl viologen with 710 nm light before and after flash illumination has no effect on the extent or temperature of the temperatures.

Journal ArticleDOI
TL;DR: In this paper, a structural interpretation of the changes occurring in the two-dimensional hydrocarbon chain packing modes during the transitions between the hydrated L c, L β, L β′, P β′ and L α bilayer forms of DPPC is proposed.

Journal ArticleDOI
TL;DR: Autoxidizing cysteine disrupts the integrity of hepatocytes causing release of glutathione, adenosine triphosphate and lactate dehydrogenase indicating that it is of little use as a therapeutic agent.

Journal ArticleDOI
TL;DR: The data reported in this study indicate that purified guanylate cyclase binds heme and the latter is required for enzyme activation by NO and nitroso compounds.

Journal ArticleDOI
TL;DR: Evidence is presented that both hexokinase-binding protein and mitochondrial porin bind glycerol kinase.

Journal ArticleDOI
TL;DR: In this article, the authors determined absolute absorption cross-sections for oxygen production (σO2) from the light-saturation behavior of oxygen flash yields from whole cells of Chlorella vulgaris illuminated with submicrosecond flashes of laser light.

Journal ArticleDOI
TL;DR: 2,3,5-Trimethyl-6-(12-hydroxy-5,10-dodecadiynyl)-l,4-benzoquinone (AA861) inhibited 5-lipoxygenase of guinea pig peritoneal polymorphonuclear leukocytes (ID50, 0.8 μM).

Journal ArticleDOI
TL;DR: The pool of free amino acids, urocanic acid and pyrrolidone carboxylic acid in mammalian stratum corneum has been shown to be derived principally or totally from the histidine-rich protein of the keratohyalin granules.


Journal ArticleDOI
TL;DR: The structural changes accompanying the sub-transition of hydrated dipalmitoylphosphatidylcholine (DPPC) have been defined using X-ray diffraction methods as discussed by the authors.

Journal ArticleDOI
TL;DR: Formation of an IgG-antigen complex on the liposome surface results in a 10(2)-fold enhancement ofliposome uptake, while coating the vesicles with fibronectin results in an 10-fold augmentation of uptake.

Journal ArticleDOI
TL;DR: Observations provide strong evidence that the 23 kDa polypeptide, electrostatically bound to the inner thylakoid surface, is involved in the photosynthetic water-splitting reaction.



Journal ArticleDOI
TL;DR: Although the relative proportion of the major classes of membrane polar lipids remained constant during adjustments in fluidity, large changes occured in the abundance of specific fatty acids suggesting that fluidity is not a simple linear function of fatty acid composition.


Journal ArticleDOI
TL;DR: The results indicate that selenoprotein P is synthesized in rat liver and that it transfers selenium from the liver to extrahepatic tissues.

Journal ArticleDOI
TL;DR: In this report, models for binding are presented which are based on the assumption that the binding is an energy-independent process and allow a proper calculation of the electrical potential when the binding of the probe to the different cellular components is known.