The refractory lining of the converter also plays a role in the conversion — the clay lining is used in the acid Bessemer, in which there is low phosphorus in the raw material.

As the functional group of the amino acid cysteine, the thiol group plays a very important role in biology.

The DNA work achieved the most fame because DNA ( deoxyribonucleic acid ) plays essential roles in cell metabolism and genetics, and the discovery of its structure helped scientists understand how genetic information is passed from parents to children.

DHFR plays a central role in the synthesis of nucleic acid precursors, and it has been shown that mutant cells that completely lack DHFR require glycine, a purine, and thymidine to grow.

Xanthine oxidase ( XO ) plays a role in conversion of purine to uric acid in humans and reducing the activity of XO could limit uric acid production, which would aid in treatment of gout.

Sialic acid also plays an important role in human influenza infections.

Such a loss may be due to pernicious anemia ( with loss of intrinsic factor ) or to a number of other conditions that decrease production of gastric acid, which also plays a part in absorption of B < sub > 12 </ sub > from foods.

** Pyridoxal-phosphate ( or PLP, pyridoxal-5 '- phosphate, P5P, active form of Vitamin B6 )— plays a role in the conversion of L-DOPA into dopamine ( via the enzyme aromatic L-amino acid decarboxylase )

** Pyridoxal-phosphate ( or PLP, pyridoxal-5 '- phosphate, P5P, active form of Vitamin B6 )— plays role in conversion of 5-HTP into serotonin ( via the enzyme aromatic L-amino acid decarboxylase ).

In the soil profile, the organic acids are often concentrated at the top while carbonic acid plays a larger role towards the bottom or below in the aquifer.

Since hepatic metabolism plays a significant role in mefenamic acid elimination, patients with known liver deficiency may be prescribed lower doses.

Along with S. sobrinus, S. mutans plays a major role in tooth decay, metabolizing sucrose to lactic acid using the enzyme Glucansucrase.

The preference of liver transaminases for oxaloacetate or alpha-ketoglutarate plays a key role in funneling nitrogen from amino acid metabolism to aspartate and glutamate for conversion to urea for excretion of nitrogen.

It plays a key role in chain elongation in fatty acid biosynthesis and polyketide biosynthesis.

The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen.

The citric acid cycle is a key component of the metabolic pathway by which all aerobic organisms generate energy.

As public awareness and the environmental sciences have improved in recent years, environmental issues have broadened to include key concepts such as " sustainability " and also new emerging concerns such as ozone depletion, global warming, acid rain, land use and biogenetic pollution.

The reaction of acid with carbonates — most commonly found as the polymorph calcite and aragonite ( CaCO < sub > 3 </ sub >) relates to the dissolution and precipitation of the mineral, which is key in the formation of limestone caves, features within them such as stalactite and stalagmites, and karst landforms.

Neither urea nor oxalic acid is organic by this definition, yet they were two key compounds in the vitalism debate.

The key observation is that, ordinarily, most of the chlorine in the stratosphere resides in stable " reservoir " compounds, primarily hydrochloric acid ( HCl ) and chlorine nitrate ().

Although the exact mechanism of the event is unknown, key amino acid residues identified include tyrosine at positions 80 and 123, glutamic acid at position 177, and arginine at position 180.

Some of the key topics that spurred development of the field have been the evolution of enzyme function, the use of nucleic acid divergence as a " molecular clock " to study species divergence, and the origin of noncoding DNA.

Such food staples have fundamentally altered several key nutritional characteristics of the human diet since the Paleolithic era, including glycemic load, fatty acid composition, macronutrient composition, micronutrient density, acid-base balance, sodium-potassium ratio, and fiber content.

The key is the addition of acetohydroxamic acid ( AHA ) to the extraction and scrub sections of the process.

Mycophenolic acid acts as a non-competitive, selective, and reversible inhibitor of Inosine-5 ′- monophosphate dehydrogenase ( IMPDH ), which is a key enzyme in the de novo guanosine nucleotide synthesis.

Each motif, which is about forty amino acid residues long, is folded in a distinctive Greek key pattern.

Its unusual cell wall, rich in lipids ( e. g., mycolic acid ), is likely responsible for this resistance and is a key virulence factor.

Placing the box back in the acid pool, she leaves, giving the medallion key to the tribe leader.

A small key implanted near the boy's heart will free him, but Vesalius must perform the surgery within six minutes to get the key before the acid falls.

While there is some truth to this legend ( the KGB did conduct some alcohol-related tests involving key ingredients in RU-21, most notably the succinic acid ), KGB has no role in commercializing this product.

Unfortunately, it produces a chemical action that hastens the decomposition of even the finest papers .” In the field of library preservation it is known “ that acid hydrolysis of cellulose and related carbo-hydrates is one of the key factors responsible for the degradation of paper during ageing .” Some recent professional work has focused on the specific in the degradation involved in the deterioration of paper that has had a rosin sizing process, and what amount of rosin affects the deterioration process, in addition to work on developing permanent paper and sizing agents that will not eventually destroy the paper.

The process involves submerging the metal part into a phosphoric acid solution whose key ingredient is often zinc or manganese, with varying additional amounts of nitrates and chlorates and copper.

One of the key pathways in AMPK ’ s regulation of fatty acid oxidation is the phosphorylation and inactivation of acetyl-CoA carboxylase.

It is a key intermediate in the biosynthesis of ophthalmic acid or ophthalmate, which was first isolated from calf lens.

Palmitic acid has been shown ( in rats fed on a 20 % fat ( palmitic acid ), 80 % carbohydrate diet ) to alter aspects of the central nervous system responsible for the secretion of insulin, and to suppress the body's natural appetite-suppressing signals from leptin and insulin -- the key hormones involved in weight regulation.

The key step of the experiment was that they labeled one type of amino acid at a time and then put the mixture through a Millipore filter.

Processes involved in acid deposition ( note that only SO < sub > 2 </ sub > and NO < sub > x </ sub > play a significant role in acid rain ).

However, because of the role of the citric acid cycle in anabolism, they may not be lost, since many TCA cycle intermediates are also used as precursors for the biosynthesis of other molecules.

One of these is in the stomach lining, where prostaglandins serve a protective role, preventing the stomach mucosa from being eroded by its own acid.

Evidence does not support a beneficial role for omega-3 fatty acid supplementation in preventing cardiovascular disease ( including myocardial infarction and cardiac death ) or stroke.

In the early 1990s, he briefly reunited with YMO, playing an instrumental role in the techno and acid house movements of the era, before parting ways again shortly afterwards.

It had a defining role in the development of contemporary electronic music, particularly in acid house.

In addition to intra-and intermolecular hydrogen bonds, keratins have large amounts of the sulfur-containing amino acid cysteine, required for the disulfide bridges that confer additional strength and rigidity by permanent, thermally-stable crosslinking — a role sulfur bridges also play in vulcanized rubber.

Pyridoxal phosphate-dependent enzymes play a role in the biosynthesis of four important neurotransmitters: serotonin, epinephrine, norepinephrine and gamma-aminobutyric acid ( GABA ).

Degussa (" Deutsche Gold-und Silber-Scheideanstalt ") had a leading role in the German research on pest control with hydrocyanic acid gas from 1916 / 17 on.

The most notable of these was a role in Who Framed Roger Rabbit ( 1988 ) as a shoe that was " dipped " in acid.

Fat cells have an important physiological role in maintaining triglyceride and free fatty acid levels, as well as determining insulin resistance.

The sequence of the genetic code determines which amino acids are incorporated into proteins, and the role of tRNA is to specify which sequence from the genetic code corresponds to which amino acid.

Taking this into consideration, high levels of gastrin may play a role in the development of some of the more common LES disorders such as acid reflux disease.

Usnic acid is thought to play a role in protecting the photosymbiont by absorbing excess UV-B.

The role of gastric acid in digestion was established in the 1820s and 1830s by William Beaumont on Alexis St. Martin, who, as a result of an accident, had a fistula ( hole ) in his stomach, which allowed Beaumont to observe the process of digestion and to extract gastric acid, verifying that acid played a crucial role in digestion.