Ewa Skrzypczak-Jankun

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The isomorphous structures of the hirugen (N-acetylhirudin 53'-64' with sulfato-Tyr63') and hirulog 1 (D-Phe-Pro-Arg-Pro-(Gly)4 desulfato-Tyr63'-hirugen) complexes of human alpha-thrombin have been determined and refined at 2.2 A resolution to crystallographic R-factors of 0.167 and 0.163, respectively. The binding of hirugen to thrombin is similar to that(More)
PUFA metabolites have a profound effect on inflammatory diseases and cancer progression. Blocking their production by inhibiting PUFA metabolizing enzymes (dioxygenases: cyclooxygenases and LOXs) might be a successful way to control and relieve such problems, if we learn to better understand their actions at a molecular level. Compounds with strong(More)
Scientific research provides documented evidence that fatty acid metabolites have profound impact on carcinogenesis. Intervention into dioxygenase pathways might therefore effect development, metastasis and progression of many types of cancers. This work delivers the first 3D structural data and explains how curcumin interacts with the fatty acid(More)
Many lipoxygenase inhibitors including curcumin are currently being studied for their anti-carcinogenic properties. Curcumin is a naturally occurring polyphenolic phytochemical isolated from the powdered rhizome of the plant Curcuma longa that possesses anti-inflammatory properties and inhibits cancer formation in mice. Recently it was shown that the(More)
Eicosanoids, which originate from polyunsaturated fatty acids (PUFAs), have a major impact on homeostasis maintenance as secondary signal transducers. Signal cascade, which includes reception, processing and signal transduction coming from the environment into the cell, determines the type of response evoked. Signal distortion may take place on every level(More)
Proteolytic enzymes are required to mediate tumor cell invasion and metastasis. The urokinase plasminogen activator (uPA) is commonly overexpressed by many human cancers. Therefore, uPA is a logical target to inhibit cancer invasion and metastasis. However, uPA inhibitors also reduce tumor growth. We used a mutated form of plasminogen activator inhibitor(More)
Plasminogen activator inhibitor type-1 (PAI-1), is a unique member of serpin superfamily, the primary regulator of plasminogen activation and therefore essential factor regulating physiological thrombotic/fibrinolytic balance in vivo. Via interactions with integrins and extracellular matrix components it orchestrates also cell adhesion and migration.(More)
A complex between native, iron(II) soybean lipoxygenase 3 and 4-nitrocatechol, a known inhibitor of the enzyme, has been detected by isothermal titration calorimetry and characterized by X-ray crystallography. The compound moors in the central cavity of the protein close to the essential iron atom, but not in a bonding arrangement with it. The iron ligands(More)
The number of people diagnosed with type 2 diabetes has risen steeply recently exhausting the ability of health care systems to deal with the epidemic. Seventy-five percent of people with diabetes live in low- and middle-income countries. The largest populations of diabetics are in China and India, with many of those(More)