glutamine

There is currently no way to effectively cure or treat TSD. Even with the best care TSD children will die by the age of five. However, research is ongoing and several methods of treatment are being investigated, although significant hurdles remain before any of them will be functional. The first treatment method that was investigated by scientists was enzyme replacement therapy, whereby functional Hex A would be injected into the patient to replace the missing enzyme, a process similar to insulin injections. However, the enzyme was fo ...

See also:

Tay-Sachs disease, Tay-Sachs disease - Symptoms, Tay-Sachs disease - Pathogenesis, Tay-Sachs disease - Testing, Tay-Sachs disease - Therapy, Tay-Sachs disease - Epidemiology

Read more here: » Tay-Sachs disease: Encyclopedia II - Tay-Sachs disease - Therapy

Determining which amino acid forms the N-terminus of a peptide chain is useful for two reasons: to aid the ordering of individual peptide fragments' sequences into a whole chain, and because the first round of Edman degradation is often contaminated by impurities and therefore does not give an accurate determination of the N-terminal amino acid. A generalised method for N-terminal amino acid analysis follows: React the peptide with a reagent which will selectively label the terminal amino acid. Hydrolyse the protein. Determine t ...

See also:

Protein sequencing, Protein sequencing - Determining amino acid composition, Protein sequencing - Hydrolysis, Protein sequencing - Separation, Protein sequencing - Quantitative analysis, Protein sequencing - N-terminal amino acid analysis, Protein sequencing - C-terminal amino acid analysis, Protein sequencing - Edman degradation, Protein sequencing - The Edman degradation reaction, Protein sequencing - Limitations of the Edman degradation, Protein sequencing - Mass spectroscopy, Protein sequencing - Predicting protein sequence from DNA/RNA sequences

Read more here: » Protein sequencing: Encyclopedia II - Protein sequencing - N-terminal amino acid analysis

ADH is a peptide consisting of nine amino acids (a nonapeptide). The sequence is cysteine - tyrosine - phenylalanine - glutamine - asparagine - cysteine - proline - arginine - glycine. The cysteine residues form a sulfur bridge. The structure of ADH is very similar to that of oxytocin, also a nonapeptide with a sulfur bridge. ADH and oxytocin are both produced by the hypothalamus and are the only known hormones released by the human posterior pituary. The similarity of the two can cause some cross-reactions: oxytocin has a slight an ...

See also:

Antidiuretic hormone, Antidiuretic hormone - Physiology, Antidiuretic hormone - Control, Antidiuretic hormone - Actions, Antidiuretic hormone - Structure and relation to oxytocin, Antidiuretic hormone - Pharmacology, Antidiuretic hormone - Role in disease

Read more here: » Antidiuretic hormone: Encyclopedia II - Antidiuretic hormone - Structure and relation to oxytocin

Although dopamine receptor blockers may have restricted benefits, there is no definite treatment for disease. In 2004 it was found that a simple sugar called trehalose can alleviate symptoms in genetically modified mice, giving hope for a treatment. There is no treatment to help stop the progression of the disease. Fortunately, there are treatments available to help reduce some symptoms of the disease. Unfortunately, these treatments aggravate other symptoms like bradykinesia and dystonia (very slow movement and stiffness). There are also treatments to control abnormal movements and emoti ...

See also:

Huntington's disease, Huntington's disease - Symptoms, Huntington's disease - Genetics, Huntington's disease - Diagnosis, Huntington's disease - Pathology, Huntington's disease - Survival Rate, Huntington's disease - Treatment and Prevention, Huntington's disease - Ethical aspects

Read more here: » Huntington's disease: Encyclopedia II - Huntington's disease - Treatment and Prevention

Oxytocin is destroyed in the gastrointestinal tract and is therefore administered by injection or as nasal spray. Oxytocin given intravenously does not enter the brain in significant quantities - it is excluded from the brain by the blood-brain barrier. Drugs administered by nasal spray are thought to have better access to the CNS. Injected oxytocin analogues (trade names Pitocin, Syntocinon) are used to induce labour and support labour in case of non-progression of the parturition. It has largely replaced ergotamine as the principal agent to increase uterine tone ...

See also:

Oxytocin, Oxytocin - Synthesis storage and release, Oxytocin - Structure, Oxytocin - Receptor, Oxytocin - Actions, Oxytocin - Uses, Oxytocin - Evolution

Read more here: » Oxytocin: Encyclopedia II - Oxytocin - Uses

ADH is used therapeutically in various conditions, and its long-acting synthetic analogue desmopressin is used in conditions featuring low ADH, as well as for control of bleeding (in some forms of von Willebrand disease) and in extreme cases of bedwetting by children. Terlipressin and related analogues are used as vasocontrictors in certain conditions. Vasopressin has also been implicated in playing a positive role in different kinds of memory formation, including delayed reflexes, image, short- and long-term memory, though the mechanism remains unknown. Thus, des ...

See also:

Antidiuretic hormone, Antidiuretic hormone - Physiology, Antidiuretic hormone - Control, Antidiuretic hormone - Actions, Antidiuretic hormone - Structure and relation to oxytocin, Antidiuretic hormone - Pharmacology, Antidiuretic hormone - Role in disease

Read more here: » Antidiuretic hormone: Encyclopedia II - Antidiuretic hormone - Pharmacology

A great deal of our knowledge of how prions work at a molecular level comes from detailed biochemical analysis of yeast prion proteins. A typical yeast prion protein contains a region (protein domain) with many repeats of the amino acids glutamine (Q) and asparagine (N); these Q/N-rich domains form the core of the prion's structure. Ordinarily, yeast prion domains are flexible and lack a defined structure. When they convert to the prion state, several molecules of a particular protein come together to form a highly structured amyloid ...

See also:

Prion, Prion - PrP and the Prion hypothesis, Prion - Prions in yeast and other fungi, Prion - Molecular properties of prions, Prion - Classification

Read more here: » Prion: Encyclopedia II - Prion - Molecular properties of prions

It usually takes between 10 to 25 years for the disease to kill someone, and it is invariably fatal. Mortality is due to complications resulting from Huntington's Disease rather than the disease itself. The age of onset of the disease is in the 30s and 40s in most cases. About 10 percent of Huntington's disease cases occur in people under the age of 20 years and is called juvenile Huntington’s disease. It has an age of onset anywhere between infancy and 20 years of age. The symptoms of juvenile HD are very different from those of ad ...

See also:

Huntington's disease, Huntington's disease - Symptoms, Huntington's disease - Genetics, Huntington's disease - Diagnosis, Huntington's disease - Pathology, Huntington's disease - Survival Rate, Huntington's disease - Treatment and Prevention, Huntington's disease - Ethical aspects

Read more here: » Huntington's disease: Encyclopedia II - Huntington's disease - Survival Rate

Although beets have been grown as vegetables and for fodder since antiquity (a large root vegetable appearing in 4000-year old Egyptian temple artwork may be a beet), their use as a sugar crop is relatively recent. As early as 1590, the French botanist Olivier de Serres extracted a sweet syrup from beetroot, but the practice did not become common. The Prussian chemist Andreas Sigismund Marggraf used alcohol to extract sugar from beets (and carrots) in 1747, but his methods did not lend themselves to economical industrial-scale production. Hi ...

See also:

Sugar beet, Sugar beet - Culture, Sugar beet - Processing, Sugar beet - Reception, Sugar beet - Diffusion, Sugar beet - Carbonatation, Sugar beet - Evaporation, Sugar beet - Crystallization, Sugar beet - Sugar beet syrup, Sugar beet - History, Sugar beet - Agriculture

Read more here: » Sugar beet: Encyclopedia II - Sugar beet - History

The United States Food and Drug Administration (FDA) lists monosodium glutamate as "generally recognized as safe", along with such substances as salt, vinegar, baking powder, and sodium tripolyphosphate. Food products from Australia and New Zealand may refer to MSG as "flavour enhancer 621". The EU food additive code for MSG is E621. The HS code of monosodium glutamate is 29224220. The free glutamic acid component of MSG may also be present in a wide variety of other additives, including hydrolyzed veget ...

See also:

Monosodium glutamate, Monosodium glutamate - Umami, Monosodium glutamate - Natural amino acid, Monosodium glutamate - Neurotransmitter, Monosodium glutamate - Sources, Monosodium glutamate - Discovery, Monosodium glutamate - Health concerns: MSG Intolerance, Monosodium glutamate - Health Concerns: Excitotoxicity, Monosodium glutamate - Government agency classification

Read more here: » Monosodium glutamate: Encyclopedia II - Monosodium glutamate - Government agency classification

In 1907, Japanese researcher Kikunae Ikeda of the Tokyo Imperial University identified brown crystals left behind after the evaporation of a large amount of kombu broth as glutamic acid. These crystals, when tasted, reproduced the ineffable but undeniable flavor he detected in many foods, most especially in seaweed. Professor Ikeda termed this flavor "umami." He then patented a method of mass-producing a crystalline form of glutamic acid, MSG. ^{See also:}

Monosodium glutamate, Monosodium glutamate - Umami, Monosodium glutamate - Natural amino acid, Monosodium glutamate - Neurotransmitter, Monosodium glutamate - Sources, Monosodium glutamate - Discovery, Monosodium glutamate - Health concerns: MSG Intolerance, Monosodium glutamate - Health Concerns: Excitotoxicity, Monosodium glutamate - Government agency classification

Read more here: » Monosodium glutamate: Encyclopedia II - Monosodium glutamate - Discovery

Factor V is bound to platelets and is activated by thrombin. On activation, factor V is spliced in two chains (heavy and light chain) which are nonconvalently bound to each other by calcium. Factor Va, the activated form, is a cofactor for factor X in its reciprocal activation of prothrombin (factor II) into thrombin. Factor Va is degraded by activated protein C, one of the principal p ...

See also:

Factor V, Factor V - Genetics, Factor V - Physiology, Factor V - Role in disease, Factor V - History, Factor V - Reference, Factor V - External link

Read more here: » Factor V: Encyclopedia II - Factor V - Physiology

Not all prions are dangerous; in fact, prion-like proteins are found naturally in many (perhaps all) plants and animals[1]. Because of this, scientists reasoned that such proteins could give some sort of evolutionary advantage to their host. This was suggested to be the case in a species of fungus, Podospora anserina. Genetically compatible colonies of this fungus can merge together and share cellular contents such as nutrients and cytoplasm. A natural system of protective "incompatibility" proteins exists to prevent promiscuous shari ...

See also:

Prion, Prion - Prion hypothesis, Prion - Useful prions in yeast and other fungi, Prion - Molecular properties of prions, Prion - Classification

Read more here: » Prion: Encyclopedia II - Prion - Useful prions in yeast and other fungi

A great deal of our knowledge of how prions work at a molecular level comes from detailed biochemical analysis of yeast prion proteins. A typical yeast prion protein contains a region (protein domain) with many repeats of the amino acids glutamine (Q) and asparagine (N); these Q/N-rich domains form the core of the prion's structure. Ordinarily, yeast prion domains are flexible and lack a defined structure. When they convert to the prion state, several molecules of a particular protein come together to form a highly structured amyloid ...

See also:

Prion, Prion - Prion hypothesis, Prion - Useful prions in yeast and other fungi, Prion - Molecular properties of prions, Prion - Classification

Read more here: » Prion: Encyclopedia II - Prion - Molecular properties of prions

Headache is the most common complication; it often responds to intravenous caffeine injection, and can often be prevented by strict maintenance of a supine posture for 2 hours after the successful puncture. Contact between the side of the LP needle and a spinal nerve root can result in anomalous sensations in a leg during the procedure; this is harmless and patients can be warned about it in advance to m ...

See also:

Lumbar puncture, Lumbar puncture - Indications, Lumbar puncture - Procedure, Lumbar puncture - Risks, Lumbar puncture - Diagnostics

Read more here: » Lumbar puncture: Encyclopedia II - Lumbar puncture - Risks

It usually takes between 10 to 25 years for the disease to kill someone, and it is invariably fatal. Mortality is due to complications resulting from Huntington's Disease rather than the disease itself. The age of onset of the disease is in the 30s and 40s in most cases. About 10 percent of Huntington's disease cases occur in people under the age of 20 years and is called juvenile Huntington’s disease. It has an age of onset anywhere between infancy and 20 years of age. The symptoms of juvenile HD are very different from those of ad ...

See also:

Huntington's disease, Huntington's disease - Symptoms, Huntington's disease - Genetics, Huntington's disease - Diagnosis, Huntington's disease - Manifestation, Huntington's disease - Pathology, Huntington's disease - Survival Rate, Huntington's disease - Treatment and Prevention, Huntington's disease - Ethical aspects

Read more here: » Huntington's disease: Encyclopedia II - Huntington's disease - Survival Rate

The most common indication for a lumbar puncture is to collect cerebrospinal fluid in a case of suspected meningitis. Subarachnoid hemorrhage, hydrocephalus, benign intracranial hypertension and other diagnoses may be supported or excluded with this test. Lumbar punctures may also be done to inject medications into the cerebrospinal fluid or lumbar epidural space. ...

See also:

Lumbar puncture, Lumbar puncture - Indications, Lumbar puncture - Procedure, Lumbar puncture - Risks, Lumbar puncture - Diagnostics

Read more here: » Lumbar puncture: Encyclopedia II - Lumbar puncture - Indications

Depending on how polar the side chain, aminoacids can be hydrophilic or hydrophobic to various degree. This influences their interaction with other structures, both within the protein itself and within other proteins. The distribution of hydrophilic and hydrophobic aminoacids determines the tertiary structure of the protein, and their physical location on the outside structure of the proteins influences their quaternary structure. For example, soluble proteins have surfaces rich with polar aminoacids like serine and threonine, while integral ...

See also:

Amino acid, Amino acid - Overview, Amino acid - General structure, Amino acid - Isomerism, Amino acid - Reactions, Amino acid - List of standard amino acids, Amino acid - Structures, Amino acid - Chemical properties, Amino acid - Hydrophilic and hydrophobic amino acids, Amino acid - Nonstandard amino acids, Amino acid - Uses of substances derived from amino acids

Read more here: » Amino acid: Encyclopedia II - Amino acid - Hydrophilic and hydrophobic amino acids

Amino acid - Structures. Structures and symbols of the 20 amino acids present in genetic code. Amino acid - Chemical properties. Following is a table listing the one letter symbols, the three-letter symbols, and the chemical properties of the side chains of the standard amino acids. The mass listed is the weighted average of all common isotopes, and includes the mass of H2O. The one-letter symbol for an undetermined amino acid is X. The three-letter sy ...

See also:

Amino acid, Amino acid - Overview, Amino acid - General structure, Amino acid - Isomerism, Amino acid - Reactions, Amino acid - List of standard amino acids, Amino acid - Structures, Amino acid - Chemical properties, Amino acid - Hydrophilic and hydrophobic amino acids, Amino acid - Nonstandard amino acids, Amino acid - Uses of substances derived from amino acids

Read more here: » Amino acid: Encyclopedia II - Amino acid - List of standard amino acids

Sugar beet is a hardy biennial vegetable that can be grown commercially in a wide variety of temperate climates. During its first growing season, it produces a large (1–2 kg) storage root whose dry mass is 15–20% sucrose by weight. If not harvested, during its second growing season, the nutrients in this root are consumed to produce the plant's flowers and seeds. In commercial beet production, the root is harvested after the first growing season, ...

See also:

Sugar beet, Sugar beet - Culture, Sugar beet - Processing, Sugar beet - Reception, Sugar beet - Diffusion, Sugar beet - Carbonatation, Sugar beet - Evaporation, Sugar beet - Crystallization, Sugar beet - Sugar beet syrup, Sugar beet - History, Sugar beet - Agriculture

Read more here: » Sugar beet: Encyclopedia II - Sugar beet - Culture

An unrefined sugary syrup can be produced directly from sugar beet. This thick, dark syrup is produced by cooking shredded sugar beet for several hours, then pressing the resulting sugar beet mash and concentrating the juice produced until it has the consistency similar to that of honey. No other ingredients are used. In Germany, particularly the Rhineland area, this sugar beet syrup is used as a spread for sandwiches, as wel ...

See also:

Sugar beet, Sugar beet - Culture, Sugar beet - Processing, Sugar beet - Reception, Sugar beet - Diffusion, Sugar beet - Carbonatation, Sugar beet - Evaporation, Sugar beet - Crystallization, Sugar beet - Sugar beet syrup, Sugar beet - History, Sugar beet - Agriculture

Read more here: » Sugar beet: Encyclopedia II - Sugar beet - Sugar beet syrup

Symptoms of Huntington's disease begin increasingly early the more glutamines a person carries within the repeating portion of his or her mutant huntingtin proteins. This number increases as the disease gene is passed on, so that the age of onset decreases with successive generations (although not infinitely early, since patients with childhood symptoms tend not to have children themselves). The diagnosis is established by neurological examination findings and/or demonstration of cell loss, especially in the caudate nucleus, supported b ...

See also:

Huntington's disease, Huntington's disease - Symptoms, Huntington's disease - Genetics, Huntington's disease - Diagnosis, Huntington's disease - Manifestation, Huntington's disease - Pathology, Huntington's disease - Survival Rate, Huntington's disease - Treatment and Prevention, Huntington's disease - Ethical aspects

Read more here: » Huntington's disease: Encyclopedia II - Huntington's disease - Diagnosis