Browsing Research Articles (Biochemistry) by Title

IMA Genome-F 11: Draft genome sequences of Fusarium xylarioides, Teratosphaeria gauchensis and T. zuluensis and genome annotation for Ceratocystis fimbriata

Wingfield, Brenda D.; Fourie, Arista; Simpson, Melissa C.; Bushula-Njah, Vuyiswa S.; Aylward, Janneke; Barnes, Irene; Coetzee, Martin P. A.; Dreyer, Leanne L.; Duong, Tuan A.; Geiser, David M.; Roets, Francois; Steenkamp, E. T.; Van Der Nest, Magriet A.; van Heerden, Carel J.; Wingfield, Michael J. (BMC (part of Springer Nature), 2019-09-13)

ENGLISH ABSTRACT: Draft genomes of the fungal species Fusarium xylarioides, Teratosphaeria gauchensis and T. zuluensis are presented. In addition an annotation of the genome of Ceratocystis fimbriata is presented. Overall ...

Impact of glucocorticoid receptor density on ligand- independent dimerization, cooperative ligand-binding and basal priming of transactivation : a cell culture model

Robertson, Steven; Rohwer, Johann M.; Hapgood, Janet P; Louw, Ann (Public Library of Science -- PLoS, 2013-05)

Glucocorticoid receptor (GR) levels vary between tissues and individuals and are altered by physiological and pharmacological effectors. However, the effects and implications of differences in GR concentration have not ...

In vitro chemopreventive properties of green tea, rooibos and honeybush extracts in skin cells

Magcwebeba, Tandeka U.; Swart, Pieter; Swanevelder, Sonja; Joubert, Elizabeth; Gelderblom, Wentzel C. A. (MDPI, 2016-11-25)

The chemopreventive properties of the herbal teas rooibos (Aspalathus linearis) and honeybush (Cyclopia spp.) have been demonstrated on mouse skin in vivo but the underlying mechanisms are not clear. The aim of the current ...

Inhibition of corticosteroid-binding globulin gene expression by glucocorticoids involves C/EBPβ

Verhoog, Nicolette; Allie-Reid, Fatima; Vanden Berghe, Wim; Smith, Carine; Haegeman, Guy; Hapgood, Janet; Louw, Ann (2014-10)

Corticosteroid-binding globulin (CBG), a negative acute phase protein produced primarily in the liver, is responsible for the transport of glucocorticoids (GCs). It also modulates the bioavailability of GCs, as only free ...

Inhibition of cytochrome P450c11 by biogenic amines and an aziridine precursor, 2-(4-acetoxyphenyl_-2-chloro-n-methyl-ethylammonium chloride

Louw, Ann; Allie, F.; Swart, A. C.; Swart, P. (Informa Healthcare, 2000)

The interaction of several biogenic amines and Compound A (2-(4-acetoxyphenyl)-2-chloro- N-methyl-ethylammonium chloride), an analogue of the active substance in a HPLC fraction isolated from the shrub, Salsola tuberculatiformis ...

The injectable-only contraceptive medroxyprogesterone acetate, unlike norethisterone acetate and progesterone, regulates inflammatory genes in endocervical cells via the glucocorticoid receptor

Govender, Yashini; Avenant, Chanel; Verhoog, Nicolette J. D.; Ray, Roslyn M.; Grantham, Nicholas J.; Africander, Donita; Hapgood, Janet P. (PLoS, 2014-05-19)

Clinical studies suggest that the injectable contraceptive medroxyprogesterone acetate (MPA) increases susceptibility to infections such as HIV-1, unlike the injectable contraceptive norethisterone enanthate (NET-EN). We ...

Interplay of the inflammatory and stress systems in a hepatic cell line : interactions between glucocorticoid receptor agonists and interleukin-6

Visser, Koch; Smith, Carine; Louw, Ann (HighWire Press, 2010-11)

The liver plays an important role in inflammation and stress by producing the acute phase proteins (APPs) required for resolution of inflammation as well as by delivering systemic glucose, through gluconeogenesis, required ...

Leaps and bounds : geographical and ecological distance constrained the colonisation of the Afrotemperate by Erica

Pirie, Michael D.; Kandziora, Martha; Nürk, Nicolai M.; Le Maitre, Nicholas C.; Mugrabi De Kuppler, Ana; Gehrke, Berit; Oliver, Edward G. H.; Bellstedt, Dirk U. (BMC (part of Springer Nature), 2019-12-05)

Background: The coincidence of long distance dispersal (LDD) and biome shift is assumed to be the result of a multifaceted interplay between geographical distance and ecological suitability of source and sink areas. Here, ...

The logic of kinetic regulation in the thioredoxin system

Pillay, Che S.; Hofmeyr, Jan-Hendrik S.; Rohwer, Johann M. (BioMed Central, 2011-01)

Abstract: Background: The thioredoxin system consisting of NADP(H), thioredoxin reductase and thioredoxin provides reducing equivalents to a large and diverse array of cellular processes. Despite a great deal of information ...

Lysosomal disruption during the development of endotoxic shock in the baboon

Janson, P. M. C.; Kuhn, S. H.; Geldenhuys, J. J. (Health and Medical Publishing Group (HMPG), 1975-06)

Lysosomal disruption with release of lysosomal enzymes has been described in shock. This study was designed to demonstrate the release of lysosomal enzymes in the liver and lung in addition to determining circulating serum ...

A metabolomics-guided exploration of the phytochemical constituents of Vernonia fastigiata with the aid of pressurized hot water extraction and liquid chromatography-mass spectrometry

Masike, Keabetswe; Khoza, Bradley S.; Steenkamp, Paul A.; Smit, Elize; Dubery, Ian A.; Madala, Ntakadzeni E. (MDPI, 2017)

Vernonia fastigiata is a multi-purpose nutraceutical plant with interesting biological properties. However, very little is known about its phytochemical composition and, thus the need for its phytochemical characterization. ...

Minimum information about a simulation experiment (MIASE)

Waltemath, Dagmar; Adams, Richard; Beard, Daniel A.; Bergmann, Frank T.; Balla, Upinder S.; Britten, Randall; Chelliah, Vijayalakshmi; Cooling, Michael T.; Cooper, Jonathan; Crampin, Edmund J.; Garny, Alan; Hoops, Stefan; Hucka, Michael; Hunter, Peter; Klipp, Edda; Laibe, Camille; Miller, Andrew K.; Moraru, Ion; Nickerson, David; Nielsen, Poul; Nikolski, Macha; Sahle, Sven; Sauro, Herbert M.; Schmidt, Henning; Snoep, Jacky L.; Tolle, Dominic; Wolkenhauer, Olaf; Le Novere, Nicolas (PLOS, 2011-04)

Reproducibility of experiments is a basic requirement for science. Minimum Information (MI) guidelines have proved a helpful means of enabling reuse of existing work in modern biology. The Minimum Information Required in ...

The multifaceted antibacterial mechanisms of the pioneering peptide antibiotics tyrocidine and gramicidin S

Wenzel, Michaela; Rautenbach, Marina; Vosloo, J. Arnold; Siersma, Tjalling; Aisenbrey, Christopher H. M.; Zaitseva, Ekaterina; Laubscher, Wikus Ernst; Van Rensburg, Wilma; Behrends, Jan C.; Bechinger, Burkhard; Hamoen, Leendert W. (American Society for Microbiology, 2018-10-09)

ENGLISH ABSTRACT: Cyclic β-sheet decapeptides from the tyrocidine group and the homologous gramicidin S were the first commercially used antibiotics, yet it remains unclear exactly how they kill bacteria. We investigated ...

Mutations at the hydrophobic core affect Hal3 trimer stability, reducing its Ppz1 inhibitory capacity but not its PPCDC moonlighting function

Santolaria, Carlos; Velazquez, Diego; Strauss, Erick; Arino, Joaquin (Nature Research, 2018-10-02)

S. cerevisiae Hal3 (ScHal3) is a moonlighting protein that, is in its monomeric state, regulates the Ser/Thr protein phosphatase Ppz1, but also joins ScCab3 (and in some instances the Hal3 paralog Vhs3) to form an unusual ...

Mutations in the pantothenate kinase of Plasmodium falciparum confer diverse sensitivity profiles to antiplasmodial pantothenate analogues

Tjhin, Erick T.; Spry, Christina; Sewell, Alan L.; Hoegl, Annabelle; Barnard, Leanne; Sexton, Anna E.; Siddiqui, Ghizal; Howieson, Vanessa M.; Maier, Alexander G.; Creek, Darren J.; Strauss, Erick; Marquez, Rodolfo; Auclair, Karina; Saliba, Kevin J. (Public Library of Science, 2018-04-03)

The malaria-causing blood stage of Plasmodium falciparum requires extracellular pantothenate for proliferation. The parasite converts pantothenate into coenzyme A (CoA) via five enzymes, the first being a pantothenate ...