BACKGROUND ATP-binding cassette (ABC) transporters are essential regulators of organismic homeostasis, and are particularly important in protecting the body from potentially harmful exogenous substances. Recently, an increasing number of in vitro observations have indicated a functional role of ABC transporters in the differentiation and maintenance of stem cells. Therefore, we sought to determ...

Adenosine triphosphate (ATP)-binding cassette (ABC) transporters may play an important role in the pathogenesis of atherosclerotic vascular diseases due to their involvement in cholesterol homeostasis, blood pressure regulation, endothelial function, vascular inflammation, as well as platelet production and aggregation. In this regard, ABC transporters, such as ABCA1, ABCG5 and ABCG8, were init...

ATP binding cassette (ABC) transporters related to multidrug resistance (MDR) actively efflux various xenobio-tics from the cells across the cell membrane and decrease a drugs efficiency. Lung cancer is the leading cause of death among all types of cancer in the Czech Republic, and its incidence is still rising. Ciglitazone, rosiglitazone and troglitazone belonging to PPARγ agonist family (form...

The ATP-binding cassette (ABC) protein superfamily constitutes one of the largest protein families known in plants. In this report, we performed a complete inventory of ABC protein genes in Vitis vinifera, the whole genome of which has been sequenced. By comparison with ABC protein members of Arabidopsis thaliana, we identified 135 putative ABC proteins with 1 or 2 NBDs in V. vinifera. Of these...

Salmon lice, Lepeophtheirus salmonis (Krøyer, 1837), are fish ectoparasites causing significant economic damage in the mariculture of Atlantic salmon, Salmo salar Linnaeus, 1758. The control of L. salmonis at fish farms relies to a large extent on treatment with anti-parasitic drugs. A problem related to chemical control is the potential for development of resistance, which in L. salmonis is do...

Protein kinases have become the second most important group of drug targets, after G-protein-coupled receptors. Currently, 15 small molecule protein kinase inhibitors (PKIs) have received food and drug administrator (FDA) approval to be used as cancer treatments. However, in the course of clinical use of these small molecule PKIs, drug resistance has become a recurring problem. Their therapeuti...

BACKGROUND ATP-binding cassette (ABC) transporters protect cells against unrelated (toxic) substances by pumping them across cell membranes. Earlier we showed that many ABC transporters are highly expressed in hematopoietic stem cells (HSCs) compared to more committed progenitor cells. The ABC transporter expression signature may guarantee lifelong protection of HSCs but may also preserve stem ...

Background: The transporter associated with antigen processing (TAP) is an ABC transporter whose experimental structure is not known. Results:We have modeled TAP based on the crystal structures of three related ABC transporters. Conclusion:We identified a possible peptide binding conformation in the transport cycle of TAP. Significance:These models help interpret experimental data and give info...

1. Abstract 2. Introduction 3. Discussion 3.1. ABC lipid transporters 3.1.2. Macrophage ABC lipid transporters 3.1.3. ABC transporter mediated lipid export from the liver 3.2. ABCA1 is a key regulator of HDL metabolism and cellular cholesterol and phospholipid export 3.2.1. ABCA1 mediated cholesterol trafficking and caveolae 3.2.2. ABCA1 and NPC1: two major regulators of cellular cholesterol tr...

Resistance to chemotherapeutic agents remains one of the major impediments to a successful treatment of chronic myeloid leukemia (CML). Misregulation of the activity of a specific group of ATP-binding cassette transporters (ABC) is responsible for reducing the intracellular concentration of drugs in leukemic cells. Moreover, a consistent body of evidence also suggests that ABC transporters play...