diphtheria is a fatal disease caused by exotoxin of corynebacterium     diphtheria .  this toxin consists of   two chains, catalytic chain (a) and binding (b) chain. by binding chain (b),   the toxin binds to its receptor on numerous body cells such as myocardial,   kidney and peripheral nerve cells. after entering, catalytic chain (a)   inhibits protein synthesis and finally can cause cell dea...

SUMMARY Cholesterol transport into the mitochondria is required for synthesis of the first steroid, pregnenolone. Cholesterol is transported by the steroidogenic acute regulatory protein (STAR), which acts at the outer mitochondrial membrane prior to its import. Mutations in the STAR protein result in lipoid congenital adrenal hyperplasia (CAH). Although the STAR protein consists of seven exons...

background:the zinc-finger x linked (zfx) gene encodes a transcription factor that acts as a regulator of self-renewal of stem cells. due to the role of zfx in cell growth, understanding zfx protein-protein interactions helps to clarify its proper biological functions in signaling pathways. the aim of this study is to define zfx protein-protein interactions and the role of zfx in cell growth. m...

Cells are metastable per se and a fine-tuned balance of de novo protein synthesis and degradation shapes their proteome. The primary function of peptides is to supply amino acids for de novo protein synthesis or as an energy source during starvation. Peptides are intrinsically short-lived and steadily trimmed by an armada of intra and extracellular peptidases. However, peptides acquired additio...

L-Arginine (Arg or R) is a non-toxigenic, metabolically versatile and conditionally essential amino acid. Single-pot synthesis of Arg modified magnetic nanoparticles (RMNPs) was achieved using magnetite nanoparticles (MNPs) and binary function of Arg as a functional group and an alkali precipitator. This modification is supposed to offer several advantages to the MNPs from a bio-application vie...

the effects of ensiling alhagi with waste date palm on rumen parameters and microbial protein synthesis in kermani sheep were investigated. 100 kg alhagi with 20 kg waste date palm were mixed and ensiled for 45 d. the experimental diets containing 0, 7, 14 and 21% alhagi with waste date palm silage. four male kermani rams were used in change over design with four 21-days period. ensiling alhagi...

  To detect the effects of sympathomimetic drugs with selective action on β1 and β2 adrenoceptors, male albino mice were treated by intraperitoneal administration of dobutamine and terbutaline for 15 days. Three groups of mice were selected as dobutamine, terbutaline and control groups, respectively. At the end of the experiment, the animals were sacrificed and the parotid glands were removed a...

Phytohemagglutinin (PHA), the major seed lectin of the common bean (Phaseolus vulgaris), is found largely in the cotyledons, but is also present in the embryonic axis. At mid-maturation, the percentage of total protein synthesis which is directed towards making PHA is 5 to 10 times greater in the cotyledons than in the axes. This lower rate of synthesis in the axes is correlated with a lower ab...