scholarly journals Organic substrate availability and enzyme activity affect microbial-controlled carbon dynamics in areas disturbed by a mining dam failure

2022 ◽  
Vol 169 ◽  
pp. 104169
Author(s):  
Éder Rodrigues Batista ◽  
Aline de Jesus Franco ◽  
Ana Paula Valadares da Silva ◽  
Jessyca Adriana Gomes Florêncio da Silva ◽  
Davi Santos Tavares ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Carbon Dynamics ◽  
Organic Substrate ◽  
Dam Failure ◽  
Substrate Availability ◽  
Mining Dam

scholarly journals Removal of pharmaceuticals in pre-denitrifying MBBR – Influence of organic substrate availability in single- and three-stage configurations

2017 ◽  
Vol 123 ◽  
pp. 408-419 ◽  
Author(s):  
Fabio Polesel ◽  
Elena Torresi ◽  
Luca Loreggian ◽  
Mònica Escolà Casas ◽  
Magnus Christensson ◽  
...  
Keyword(s):  
Organic Substrate ◽  
Substrate Availability

Biosynthetic controls that determine the branching and microheterogeneity of protein-bound oligosaccharides

1986 ◽  
Vol 64 (3) ◽  
pp. 163-181 ◽  
Author(s):  
Harry Schachter
Keyword(s):  
Enzyme Activity ◽  
Substrate Specificity ◽  
Substrate Availability ◽  
Enzyme Substrate ◽  
General Rules ◽  
Branching Patterns ◽  
Common Substrate ◽  
Branch Specificity

Detailed studies on the enzyme machinery responsible for the biosynthesis of protein-bound oligosaccharides of the Asn-GlcNAc and Ser(Thr)-GalNAc linkage types have allowed the formulation of some general rules which explain, at least in part, the branching patterns and microheterogeneity of these structures. These rules are discussed under the following headings: (i) competition of two or more enzymes for a common substrate; (ii) controls at the level of enzyme substrate specificity (e.g., critical sugar residues which turn enzyme activity on or off, branch specificity, and the role of the polypeptide in the glycoprotein substrate); (iii) substrate availability.

Mutant cells defective in poly(ADP-ribose) synthesis due to stable alterations in enzyme activity or substrate availability

1989 ◽  
Vol 184 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Satadal Chatterjee ◽  
Nora V. Hirschler ◽  
Shirley J. Petzold ◽  
Sosamma J. Berger ◽  
Nathan A. Berger
Keyword(s):  
Enzyme Activity ◽  
Substrate Availability ◽  
Mutant Cells

Changes in flocculation patterns of cohesive sediments after an iron ore mining dam failure

2018 ◽  
Vol 400 ◽  
pp. 1-11 ◽  
Author(s):  
C.F. Grilo ◽  
V. da S. Quaresma ◽  
G.F.L. Amorim ◽  
A.C. Bastos
Keyword(s):  
Iron Ore ◽  
Dam Failure ◽  
Cohesive Sediments ◽  
Mining Dam

Morphological and biochemical analyses of changes in rat hepatocytes related to wine and ethanol consumption

1984 ◽  
Vol 42 ◽  
pp. 232-233
Author(s):  
S.M. Geyer ◽  
C.L. Mendenhall ◽  
J.T. Hung ◽  
E.L. Cardell ◽  
R.L. Drake ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Endoplasmic Reticulum ◽  
Enzyme Activity ◽  
Malic Enzyme ◽  
Smooth Endoplasmic Reticulum ◽  
Rat Hepatocytes ◽  
Mature Male ◽  
Treatment Groups ◽  
Malic Enzyme Activity ◽  
Biochemical Analyses

Thirty-three mature male Holtzman rats were randomly placed in 3 treatment groups: Controls (C); Ethanolics (E); and Wine drinkers (W). The animals were fed synthetic diets (Lieber type) with ethanol or wine substituted isocalorically for carbohydrates in the diet of E and W groups, respectively. W received a volume of wine which provided the same gram quantity of alcohol consumed by E. The animals were sacrificed by decapitation after 6 weeks and the livers processed for quantitative triglycerides (T3), proteins, malic enzyme activity (MEA), light microscopy (LM) and electron microscopy (EM). Morphometric analysis of randomly selected LM and EM micrographs was performed to determine organellar changes in centrilobular (CV) and periportal (PV) regions of the liver. This analysis (Table 1) showed that hepatocytes from E were larger than those in C and W groups. Smooth endoplasmic reticulum decreased in E and increased in W compared to C values.

Sign in / Sign up

Export Citation Format

Share Document