It is challenging to measure the hydrodynamics of stirred tank reactors when they contain multiphase flows comprising liquid, gas bubbles and particles. Radioactive particle tracking techniques such as positron emission (PEPT) are only established determine internal flow behaviour due inherent opacity density fluid vessel walls. The profiles solids an important tool for robust reactor design op...

Background: Pursuant to establishing the proteomic distribution of MAPK ERK /MAPK p38 in the brain in a model of hypoxia-tolerance [Haddad, Protein Pept Lett, In press, 2007], I therein exclusively report the differential expression of MAPK JNK and related upstream and downstream kinases in various organs of the anoxia-tolerant turtle. Despite the fact that the aforementioned mechanisms involve...

The biosynthesis of Pep5, a lanthionine-containing antimicrobial peptide, is directed by the 20-kbp plasmid pED503. We identified a 7.9-kbp DNA-fragment within this plasmid which covers the information for Pep5 synthesis in the homologous host Staphylococcus epidermidis 5 which has been cured of pED503. This fragment contained, in addition to the previously described structural gene pepA and th...

Dietary protein restriction is not only beneficial to health and longevity in humans, but also protects against air pollution and minimizes feeding cost in livestock production. However, its impact on amino acid (AA) absorption and metabolism is not quite understood. Therefore, the study aimed to explore the effect of protein restriction on nitrogen balance, circulating AA pool size, and AA abs...

Gametic frequencies were obtained in four natural populations of D. sub-obscura by extracting wild chromosomes and subsequently analyzing them for inversions and allozymes. The genes Lap and Pept-1, both located within the same inversions of chromosome O, were found in striking nonrandom associations with them of the same kind and degree in all populations studied. On the contrary, the gene Acp...

The transcription of 16 genes encoding 12 peptidases (pepC, pepN, pepX, pepP, pepA, pepF2, pepDA1, pepDA2, pepQ, pepT, pepM, and pepO1), P(I) and P(III) proteinases (prtP1 and prtP3), and three transport systems (dtpT, dtpP, and opp-pepO1) of Lactococcus lactis MG1363 was analyzed in response to different environmental factors. Promoter fusions with luciferase reporter genes and/or mRNA analysi...

I N T R O D U C T I O N Several types o f melanot rop ic pept ides have been found in the pars in t e rmed ia o f lower ver tebra tes and m a m m a l s (Burgers , 1963; Preslock and Brinkley, 1970; Hopkins , 1972; Baker , 1973). T h e s e pept ides , including aand #-melanocy te s t imulat ing h o r m o n e (MSH), all contain a hep t apep t ide amino acid sequence, -Met -Glu-His -Phe-Arg-Trp-Gl...