Enzyme activity patterns of energy metabolism in skiers of different performance levels (M. quadriceps femoris)

1982 ◽  
Vol 48 (3) ◽  
pp. 315-322 ◽  
Author(s):  
Eva V. Macková ◽  
Arnošt Bass ◽  
štĚpánka šprynarová ◽  
Jan Teisinger ◽  
Karel Vondra ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Energy Metabolism ◽  
Activity Patterns ◽  
Quadriceps Femoris ◽  
Performance Levels

Enzyme activity patterns of energy supplying metabolism in the quadriceps femoris muscle(Vastus lateralis)

1976 ◽  
Vol 361 (2) ◽  
pp. 169-173 ◽  
Author(s):  
Arnošt Bass ◽  
Karel Vondra ◽  
Ratmír Rath ◽  
Václav Vítek ◽  
Jan Teisinger ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Vastus Lateralis ◽  
Activity Patterns ◽  
Quadriceps Femoris ◽  
Quadriceps Femoris Muscle ◽  
Femoris Muscle

scholarly journals Research Progress of Sirtuin4 in Cancer

2021 ◽  
Vol 10 ◽  
Author(s):  
Yibing Bai ◽  
Jiani Yang ◽  
Ying Cui ◽  
Yuanfei Yao ◽  
Feng Wu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Enzyme Activity ◽  
Energy Metabolism ◽  
Nicotinamide Adenine Dinucleotide ◽  
Enzyme Activities ◽  
Research Progress ◽  
Diverse Range ◽  
Catalytic Activities ◽  
Cellular Processes ◽  
Dependent Protein

Sirtuins (SIRTs) are members of the silent information regulator-2 family. They are a conserved family of nicotinamide adenine dinucleotide-dependent protein lysine deacylases. SIRTS are involved in intricate cellular processes. There are seven subtypes of SIRTs (1–7) in mammals. SIRT4 is located mainly in mitochondria and has various catalytic activities. These enzyme activities give it a diverse range of important biologic functions, such as energy metabolism, oxidative stress, and aging. Cancer is characterized as reprogramming of energy metabolism and redox imbalance, and SIRT4 can affect tumorigenesis. Here, we review the structure, localization, and enzyme activity of SIRT4 and its role in various neoplasms.

CYCLISCHE SCHWANKUNGEN DER AKTIVITÄTEN VON HYDROXYSTEROID-DEHYDROGENASEN IM CORPUS LUTEUM DES RINDES

1972 ◽  
Vol 69 (2) ◽  
pp. 369-384
Author(s):  
H. Brandau ◽  
L. Brandau ◽  
G. Mutzke
Keyword(s):  
Enzyme Activity ◽  
Corpus Luteum ◽  
Enzyme Activities ◽  
Optical Method ◽  
Activity Patterns ◽  
Hydroxysteroid Dehydrogenase ◽  
Corpora Lutea ◽  
Bovine Corpus Luteum ◽  
Glucose 6 Phosphate Dehydrogenase

ABSTRACT In the bovine corpora lutea periodical activities of the Δ53β-, 3β-, 17β-and 20β-hydroxysteroid dehydrogenase (OHSDH) as well as activities of glyceraldehyde-3-phosphate- and glucose-6-phosphate dehydrogenase were measured quantitatively and the alterations throughout the different stages of the cycle were studied. After homogenization of the tissue and fractionate centrifugation the enzyme activities were determined by a standardized optical method. The activities of the Δ53β-, and 3β- and 17β-OHSDH increase slowly during the first 7 days of the cycle, the maximum is reached abruptly on the 12th to 13th day of the cycle. After a striking reduction the activities decline continually to the 19th to 21st day reaching the values detected at the beginning of the cycle. The 20β-OHSDH increases slowly to the maximum on the 15th day of the cycle. Activities of the 3α-OHSDH were obtained only inconsistently. The behaviour of the activities of G6PDH was nearly identical with that of the 3β-OHSDH, while the GAPDH shows only little fluctuations of its activities. The obtained enzyme activity patterns of the maturating and high functional corpus luteum correspond to the well-known data of the biosynthetic function of the bovine corpus luteum. The changes of the amounts of progesterone and 20β-progesterol agree with the course of the activities of the 3β- resp. 20β-OHSDH.

Regulatory role of acetylation on enzyme activity and fluxes of energy metabolism pathways

2021 ◽  
pp. 130021
Author(s):  
Rafael Moreno-Sánchez ◽  
Juan Carlos Gallardo-Pérez ◽  
Silvia Cecilia Pacheco-Velazquez ◽  
Diana Xochiquetzal Robledo-Cadena ◽  
Sara Rodríguez-Enríquez ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Energy Metabolism ◽  
Regulatory Role
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