scholarly journals Oxidative Stickland reactions in an obligate aerobic organism - amino acid catabolism in the CrenarchaeonSulfolobus solfataricus

FEBS Journal ◽  
2017 ◽  
Vol 284 (13) ◽  
pp. 2078-2095 ◽  
Author(s):  
Helge Stark ◽  
Jacqueline Wolf ◽  
Andreas Albersmeier ◽  
Trong K. Pham ◽  
Julia D. Hofmann ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Catabolism ◽  
Obligate Aerobic ◽  
Aerobic Organism

scholarly journals AMINO ACID CATABOLISM

1938 ◽  
Vol 122 (2) ◽  
pp. 491-496 ◽  
Author(s):  
Fred H. Snyder ◽  
Ralph C. Corley
Keyword(s):  
Amino Acid ◽  
Amino Acid Catabolism

Nitrogen regulation of amino acid catabolism in Neurospora crassa

1978 ◽  
Vol 16 (3-4) ◽  
pp. 343-354 ◽  
Author(s):  
Thomas J. Facklam ◽  
George A. Marzluf
Keyword(s):  
Amino Acid ◽  
Neurospora Crassa ◽  
Nitrogen Regulation ◽  
Amino Acid Catabolism

scholarly journals Transcriptional hallmarks of cancer cell lines reveal an emerging role of branched chain amino acid catabolism

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Ieva Antanavičiūtė ◽  
Valeryia Mikalayeva ◽  
Ieva Ceslevičienė ◽  
Gintarė Milašiūtė ◽  
Vytenis Arvydas Skeberdis ◽  
...  
Keyword(s):  
Amino Acid ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Amino Acid Catabolism ◽  
Hallmarks Of Cancer ◽  
Branched Chain Amino Acid ◽  
Branched Chain

Changes in metabolic rate and N excretion in the marine invertebrateSipunculus nudusunder conditions of environmental hypercapnia

2002 ◽  
Vol 205 (8) ◽  
pp. 1153-1160 ◽  
Author(s):  
M. Langenbuch ◽  
H. O. Pörtner
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Metabolic Rate ◽  
Intracellular Ph ◽  
Energy Demand ◽  
Control Level ◽  
Ammonia Excretion ◽  
Amino Acid Catabolism ◽  
Acid Base ◽  
Selection Of

SUMMARYIncreased CO2 partial pressures (hypercapnia) as well as hypoxia are natural features of marine environments like the intertidal zone. Nevertheless little is known about the specific effects of CO2 on metabolism, except for the well-described effects on acid—base variables and regulation. Accordingly, the sediment-dwelling worm Sipunculus nudus was used as an experimental model to investigate the correlation of acid—base-induced metabolic depression and protein/amino acid catabolism, by determining the rates of oxygen consumption, ammonia excretion and O/N ratios in non-perfused preparations of body wall musculature at various levels of extra- and intracellular pH, PCO2 and [HCO3-]. A decrease in extracellular pH from control level (7.9) to 6.7 caused a reduction in aerobic metabolic rate of both normocapnic and hypercapnic tissues by 40-45 %. O/N ratios of 4.0-4.5 under control conditions indicate that amino acid catabolism meets the largest fraction of aerobic energy demand. A significant 10-15 % drop in ammonia excretion, a simultaneous reduction of O/N ratios and a transient accumulation of intracellular bicarbonate during transition to extreme acidosis suggest a reduction in net amino acid catabolism and a shift in the selection of amino acids used,favouring monoamino dicarboxylic acids and their amines (asparagine,glutamine, aspartic and glutamic acids). A drop in intracellular pH was identified as mediating this effect. In conclusion, the present data provide evidence for a regulatory role of intracellular pH in the selection of amino acids used by catabolism.

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