pentas lanceolata/protease

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Solution dynamics of the 1,2,3,4,6-penta-O-acetyl-alpha-D-idopyranose ring.

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The anticoagulant properties of heparin are thought to derive from the inhibition of thrombin and other coagulation-related proteases by the binding of heparin to cofactors such as antithrombin III and heparin cofactor II. The apparent minimum native heparin sequence which can bind to antithrombin

Evolutionary and physical linkage between calpains and penta-EF-hand Ca2+-binding proteins.

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The name calpain was historically given to a protease that is activated by Ca(2+) and whose primary structure contains a Ca(2+)-binding penta-EF-hand (PEF) as well as a calpain cysteine protease (CysPc) domain and a C2-domain-like (C2L) domain. In the human genome, CysPc domains are found in 15

NMR structural characterization of the penta-peptide calpain inhibitor.

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Calpains are ubiquitous intracellular calcium- and thiol-dependent proteases. Their over activation, resulting in the degradation of various substrates, has been implicated in a number of cardiovascular and neurological disorders. Here, we present the first structural characterization of LSEAL

Homodimerization of calpain 3 penta-EF-hand domain.

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Calpains 1 and 2 are heterodimeric proteases in which large (relative molecular mass M(r) 80000) and small (M(r) 28000) subunits are linked through their respective PEF (penta-EF-hand) domains. The skeletal muscle-specific calpain 3 is believed not to form a heterodimer with the small subunit but

Adherence to prescribed antiretroviral therapy in human immunodeficiency virus-infected children in the PENTA 5 trial.

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BACKGROUND Most studies of adherence to highly active antiretroviral therapy in children have been retrospective or cross-sectional. Factors relating to the caregiver, the child and the medication are all considered to be important for good adherence. METHODS Adherence with taking prescribed

Evolution of antiretroviral phenotypic and genotypic drug resistance in antiretroviral-naive HIV-1-infected children treated with abacavir/lamivudine, zidovudine/lamivudine or abacavir/zidovudine, with or without nelfinavir (the PENTA 5 trial).

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OBJECTIVE To describe the evolution of resistance to zidovudine (ZDV), lamivudine (3TC), abacavir (ABC) and nelfinavir (NFV), 113 previously untreated children in the PENTA 5 trial had resistance assayed at baseline, rebound and/or 24, 48, 72 weeks (VIRCO: phenotyping and genotyping with 'Virtual

A randomized controlled trial of genotypic HIV drug resistance testing in HIV-1-infected children: the PERA (PENTA 8) trial.

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OBJECTIVE To evaluate the longer-term utility of genotypic resistance testing in HIV-1-infected children with virological failure. METHODS Children aged 3 months-18 years switching antiretroviral therapy (ART) with HIV-1 RNA > 2,000 copies/ml were randomized between genotypic testing (Virtual

PENTA guidelines for the use of antiretroviral therapy, 2004.

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There have been few major advances in paediatric HIV management over the last 2 years. Decisions about starting antiretroviral therapy can now be based on a recent large meta-analysis of the predictive value of CD4 and HIV RNA viral load (VL) in nearly 4000 untreated children, which is discussed in

Comparison of dual nucleoside-analogue reverse-transcriptase inhibitor regimens with and without nelfinavir in children with HIV-1 who have not previously been treated: the PENTA 5 randomised trial.

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BACKGROUND Treatment options for children with HIV-1 are limited. We aimed to compare activity and safety of three dual-nucleoside analogue reverse-transcriptase inhibitor (NRTI) regimens with or without a protease inhibitor in previously untreated children with HIV-1. METHODS In our multicentre

PENTA 2009 guidelines for the use of antiretroviral therapy in paediatric HIV-1 infection.

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PENTA Guidelines aim to provide practical recommendations for treating children with HIV infection in Europe. Changes to guidance since 2004 have been informed by new evidence and by expectations of better outcomes following the ongoing success of antiretroviral therapy (ART). Participation in PENTA

Crystal structure of calpain-3 penta-EF-hand (PEF) domain - a homodimerized PEF family member with calcium bound at the fifth EF-hand.

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Calpains are Ca(2+) dependent intracellular cysteine proteases that cleave a wide range of protein substrates to help implement Ca(2+) signaling in the cell. The major isoforms of this enzyme family, calpain-1 and calpain-2, are heterodimers of a large and a small subunit, with the main dimer

Structures, functions and molecular evolution of the penta-EF-hand Ca2+-binding proteins.

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Penta-EF-hand (PEF) proteins comprise a family of Ca(2+)-binding proteins that have five repetitive EF-hand motifs. Among the eight alpha-helices (alpha1-alpha8), alpha4 and alpha7 link EF2-EF3 and EF4-EF5, respectively. In addition to the structural similarities in the EF-hand regions, the PEF

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