Facts On Glycolysis Process

Filed under: Glycolysis Process - 19 May 2012  | Spread the word !

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Glycolysis is a process that supposes a sequence of enzymatic reactions which have two vital functions, at least when it comes to living organisms. For starters, the compound is highly important in metabolizing simple six-carbon sugars, and secondly it includes the process of producing a small amount of ATP. In this context it is important to mention the fact that in the lack of such a chemical process, our bodies, but also all living organisms, will not be able to work properly, the process being essential for the generation of energy, too. It occurs on the same principles, with small variations, in all living organisms. This is one of the oldest known metabolic pathways.

One of the most common pathway types is the Embden-Mayerhof-Parnas pathway, also known as EMP pathway. Being first discovered by the researchers which have given its name, Gustav Embden, Otto Meyerhof and Jakub Karol Parnas, this pathway surely has an amazing importance, but it is crucial to know that it is not the only pathway to which the chemical process refers. Another pathway that can be included in this category is the Entner-Doudoroff pathway. Other heterofermentative and homofermentative pathways are also known. Regardless of the situation we may be talking of, it also great to be aware of the fact that the whole pathway will be divided in two general phases. They are the preparatory phase and the pay off phase. During the preparatory phase, the ATP is consumed. This is the reason why this phase is also known as the investment one. The pay off phase is the one in which ATP is being produced. Most discoveries in this area of the process date back to the 1940s. 

The preparatory phase in glycolysis has five main steps. It consumes energy and it is going to convert the glucose into three carbon sugar phosphates. The five steps are the pay off phase, the biochemical logic, the regulation, but also hexokinase and phosphofructokinase. If understanding this process can be quite hard, understanding the role that glycolysis reactions have in the human body is not difficult at all. In case the rates of the substances produced are not the normal ones, various serious conditions can be formed. A dysfunctional metabolism process can lead to improper cell development and as a consequence to cancer related conditions, but also to conditions such as the Alzheimer’s disease. In case the levels of the substance are too much increased, the effects on the human organism can be fatal. 

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Glycolysis – The History

Filed under: Uncategorized - 19 Apr 2012  | Spread the word !

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The term glycolysis is formed by two distinct words, glycose, a term that existed and the degradation lysis. The glycolysis is the process that converts glucose in pyruvate. The glycolysis is a sequence which includes ten reactions and ten intermediate compounds. The compounds offer the entry points for glycolysis. These intermediates are usually monosaccharides like glucose, fructose and galactose. The glycolysis happens in almost all the organisms, no matter if they are aerobic or anaerobic. This process is one of the oldest known to function as a metabolic pathway and it takes place in the cytosol of the cell. There are several types of glycolysis, but the most common type is the EMP. The EMP pathway was discovered by Gustav Embden, Otto Meyerhof and Jakub Karol Parnas and named after them. Another one which is very known is the Entner-Doudoroff pathway. The EMP pathway has two different phases.

The first is the preparatory phase, also named the investment phase and the second is named the pay off phase. The history of the discovery of glycolysis begins with Louis Pasteur, in 1860. Back then, he discovered that the fermentation is the result of the work of microorganisms. 37 years later, Eduard Buchner was the one who discovered that parts of certain cells can cause it intentionally. In 1905, Arthur Harden worked with William Youngalong and Nick Sheppard and they made new discoveries related to the process of fermentation.

Most of the details discovered and put together related to glycolysis were made in the 1940s by Otto Meyerhof. His work was later continued by Luis Leloir. It was very hard to discover all the details of the glycolysis because of the short life span of the reactions that make it. Because of the discoveries of these men, related to glycolysis, years later a connection was made between diseases and this process. Apparently, the glycolysis process has an important connection with various types of cancers and also with the Alzheimers’ diseae. The connection of glycolysis with cancer was observed in 1930 and that with the Alzheimer’s some decades later during research made in order to find a cure for this disease.

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The Complexity Of Glycolysis

Filed under: Uncategorized - 27 Mar 2012  | Spread the word !

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Glycolysis is a complex chemical process that takes place in many environments. Glycolysis is the phenomenon that transforms the glucose in pyruvate. The process involves ten reactions, the most known type of glycolysis being the Embden-Meyerhof-Parnas pathway (EMP pathway). The process has two phases: the preparatory one and the pay off phase. In the first phase ATP (adenosine triphosphate)  is consumed, while in the latter is produced. Glycolysis discovery underwent several stages. It began with with the microorganisms which produce the fermentation discovered by Louis Pasteur. Glycolysis continued with the discovery of the extracts of certain cells discovered by Eduard Buchner. In 1905, it was an important moment for new discoveries about glycolysis: it was determined a heat-sensitive high-molecular subcellular fraction.

Glycolysis has several step, the first five being considered preparatory such as pay-off phase, biochemical logic, regulation, hexokinase and phosphofructokinase. Our body could not work without glycolysis. The chain of reactions involved in this phenomenon can be easily affected. Some specialists claim that an unbalanced glycolysis can cause diseases such as Alzheimer, cancer, as well as genetic diseases. These theories will be researched again in order to find many things and see if they are true or not.

Fortunately, things are much easier now for them as there are many advanced tools and instruments, as well as great computer programs. It may be complicated to understand how glycolysistakes place, but there are many diagrams that show each stage of it and so, it is easier to understand the process. This complex reaction is found in all humans, animals and plants. The process is a constant chemistry lesson in schools, as it is one of the most important, as well as essential processes. Pupils make experiments in the laboratories to understand it better. They will know not only its stages, but also its importance. The name of Alzheimer’s disease comes from “glyco”, meaning sugar and “lysis”, meaning “break:.

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Things to Know About Glycolysis

Filed under: Uncategorized - 15 Feb 2012  | Spread the word !

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Glucose is perhaps one of the most important substances that our body needs in order to function properly and to provide the organism with the right amount of energy. Glycolysis is a sequence of ten reactions of ten different compounds, that boosts up our energy and combines with fatty acids to form fat. Glycolysis occurs everywhere, in both aerobic and anaerobic environments, and it is a known fact that is the most ancient known metabolic pathway.

If the rates of Glycolysis are much higher than those of the normal tissues, then this imbalance can easily lead to malignant tumor cells. This phenomenon was discovered in 1930 by Otto Warburg, and it is still known today as the Warburg effect. The Warburg effect also states that cancer is primarily caused by a dysfunction in the mitochondrial metabolism, because of an uncontrolled rate of cell growth. Researchers are racking their brains to find a way of interfering with this mitochondrial metabolism and treat cancer by reducing Glycolysis. If the quantity of Glycolysis is reduced, then the cells will not have enough genetic material to reproduce themselves, thus cancer will not manifest itself.

Not only can high levels of Glycolysis produce cancer, but also Alzheimer disease. One particularly interesting fact about Glycolysis is that it is found in basically any part of the body, even in the brain. It is known that Alzheimer is a very dangerous disease that affects the nervous tissue of the brain and suppresses its functions. A Glycolysis imbalance in the frontal-temporal-parietal part of the brain has been determined as one of the main causes for Alzheimer. Moreover, Glycolysis is also the substance responsible for sugars decomposing glucose in the liver and the muscles, that prevents the sugars from depositing on the tissues.

Aside from the fatal consequences that high levels of Glycolysis may have on the human organism, this substance has got another role in industry. Glycolysis is also responsible for the process of fermentation, especially in the brewing industry. Glycolysis gives a helping hand in the fermentation process where yeast is converted into alcohol. Glycolysis is a very complex process and it has a lot of aspects, that scientists do not fully understand.

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Glycolysis In Diseases

Filed under: Uncategorized - 23 Jan 2012  | Spread the word !

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The glycolysis is a very important process in the healthy functioning of every organism. Although mutations of the complex transformation process are rarely seen, sometimes the chain of the ten reactions can be affected and thus, distorted. This event will lead to several occurrences that will create some health problems. The glycolysis is, generally speaking, the transformation from glucose to pyruvate. There are several disease which have been linked to the ill-functioning of the glycolysis process: genetic diseases, Alzheimer’s disease and cancer.

In terms of the genetic diseases, the bad functioning of the glycolysis process will lead to the difficulty of the affected cells to function normally. As a result, the cell dies, leading to a kind of mutation, one of the most frequent being the Pyruvate kinase deficiency. As the transformation of the glycolysis is not complete and the cells are not functioning properly, the diseases that will surface out of this process are mainly of the immune system, most of the time causing anaemia. In association with the Alzheimer’s diseases, the malfunction of the glycolysis transformation leads to a deficiency of the substances in the cortices. In connection to cancer, it is not that the glycolysis does not function, but that the process is too fast, creating a surplus of substances in the tumour areas. This field is still to be researched and documented, as specialists have used this process to monitor the reactions of the cells in the tumours to the treatment. In addition to this, they are continuously trying to find a treatment which will reduce the process to a lower, more normal level, in hope of diminishing the effects of the cancerous cells. 

Thus, the glycolysis is a very important transformation process in the core of the cells. The advert from any of the ten stages of this reaction can cause a lot of damage to the cells and the entire organism, leading to serious illnesses and conditions. There are still a lot of studies to be made in this domain, in order to find the proper adjustments that will stop the transformation from malfunctioning.

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The Importance of Glycolysis

Filed under: Uncategorized - 30 Nov 2011  | Spread the word !

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Glycolysis is a very important process, in which glucose is converted into pyruvate. As it is an anaerobic process, glycolysis occurs in the absence of oxygen, but there are times when it happens aerobically as well. In eukaryotes, glycolysis takes place in the cytoplasm, more exactly in the cytosol. Glycolysis is actually the first cellular respiration step, and it consists of 10 sequences. These sequences are further divided into two phases: the preparatory phase and the pay off phase. Throughout these phases, 10 intermediary compounds are being used, which are basically the entry points of the process.

Examples of intermediates can be fructose, glucose and galactose, which are mostly common in monosaccharides. In the first phase, ATP is consumed. ATP stands for adenosine triphosphate and cells use it as a coenzyme. ATP has a very important role in the cell, as it carries chemical energy. Then, the second phase is the one in which ATP is actually being produced. Other materials formed as a result of the glycolysis process include NADH, which stands for reduced nicotinamide adenine dinucleotide. In glycolysis, a molecule of glucose in converted into two molecules of pyruvic acid. So glycolysis is basically the starting point for other respiration processes, like fermentation. Everybody knows that fermentation is the process in which yeast is being converted into alcohol. And everybody enjoys drinking beer, so here is one of the reasons why glycolysis is so important.

The organisms that ferment sugar are strongly dependent on glycolysis, as this process represents an important pathway for them. The importance of glycolysis resides, thus, from the fact that the aerobic and anaerobic respiration processes would not be possible without it. For us, humans, it may be hard to understand glycolysis, as it is a complex process, but one thing is for sure: its importance is undeniable. A simple definition of glycolysis, to understand it better, would be to think of the two words that it is formed from. You will find out that glycolysis actually means sugar breaking, so you can see that figuring out what glycolysis implies is not that hard.

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Glycolysis – A Vital And Complex Chemical Process

Filed under: Uncategorized - 31 Oct 2011  | Spread the word !

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Glycolysis is a metabolic process of decomposing the glucose in the liver and muscles. It implies many chemical reactions until is completed. It is a complex process that happens to all the beings. Glycolysis is the first stage of aerobic and anaerobic respiration, so it is extremely important for surviving. It is also the oldest type of metabolism. Glycolysis produces heat and also energy and it is possible with the help of ten types on enzymes. The final chemical reaction of the glycolysis results in pyruvate.

Glycolysis has ten steps that were discovered and described by the chemists as Gustav Georg Embden, Otto Fritz Meyerhof and Jacob Karol Parnas. Glycolysis is also of major important for fermentation. Glycolysis is found from bacteria to mammals, so it is one of the most and important metabolic processes. Without it, life would not be possible. This process is possible with the help of many chain reactions and only chemists know to explain very well what happens. Glycolysis would not be possible without the citric acid cycle and it is followed by oxydative phosphorylation.

Aerobic respiration would not be possible without glycolysis as well as other two processes: the Krebs cycle and electron transport phosphorylation. Glycolysis comes from “glyco” which means “sugar” and from “lysis” which means “breaking”. This amazing reaction takes place in the cytoplasm and is central for all beings. To conclude, glycolysis can take place with or without oxygen and means that glucose formed from six carbon sugar will split into two molecules of a three-carbon sugar. If there is oxygen, then glycolysis represents the first stage of respiration. In case there is no oxygen, ATP, which means free energy containing molecule, will be formed in the cells. The final result will be two molecules of ATP, two of water, two of NADH and two of molecules of pyruvic acid. It is a complicated process with ten stages that are also difficult to understand, but is found in every being and is extremely important for our lives. On the other hand, it is very interesting that this very old process remained the same in our bodies even after so many years of evolution.

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