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Phenylalanine

phenylalanine

(Science: amino acid) One of the amino acids which the body cannot manufacture itself, but must acquire from food. It is abundant in meats and cheese.

Phenylalanine is a precursor of tyrosine and together they lead to the formation of thyroxine or thyroid hormone and of adrenaline and noradrenaline which is converted into a neurotransmitter, a brain chemical which transmits nerve impulses. This neurotransmitter is used by the brain to manufacture noradrenaline which promotes mental alertness, memory, elevates mood and suppresses the appetite very effectively.

Along with another amino acid, tryptophan, phenylalanine governs the release of an intestinal hormone called cholecystokinin.

Overuse of phenylalanine supplements can cause anxiety, headaches and hypertension and are contraindicated for pregnant woman, those who suffer from anxiety attacks, high blood pressure, pKU, pigmented melanoma or anyone taking an anti-depressant containing monoamine oxidase inhibitors. An essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body.A type of [[amino acid commonly found in [[proteins.


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Chymotrypsin

... enzyme that cleaves proteins at specific points around the carboxy terminal ends of a large hydrophobic amino acid (like tyrosine, tryptophan, and phenylalanine). Chymotrypsin molecules can also cleave other chymotrypsin molecules but it usually doesn't happen because of the large numbers of other ...

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by supersapien
Mon Dec 02, 2013 9:29 am
 
Forum: General Discussion
Topic: Chymotrypsin
Replies: 1
Views: 1140

Help with unknown

... test) VP - Sulfur - Indole - Catalase + Oxidase/Kovac's - EMB plate showed a maroonish color Mannitol and gas + Glucose and gas + Lactose - Phenylalanine - Nitrate to nitrite + Amylase - Protease for casein (Unsure) Gelatin - Urea - Thanks in advance!!

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by kayleighat
Sun Oct 20, 2013 2:43 am
 
Forum: Microbiology
Topic: Help with unknown
Replies: 0
Views: 2622

The question about TATA sequence flexibility

... about TATA-Binding Protein: Second, the protein uses specially-placed amino acids to interact with DNA bases. As shown in the lower picture, four phenylalanine amino acids jam into the DNA minor groove and form the kinks that bend the DNA. There are also two symmetrical asparagine amino acids ...

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by Fantomas
Sat Aug 31, 2013 10:57 am
 
Forum: Molecular Biology
Topic: The question about TATA sequence flexibility
Replies: 1
Views: 1653

Still need help!

... Plate - Citrate Plate - Phenol Red + Gelatin Hydrolysis - SIM Medium - Oxidation-Fermentation + MR/VP +/ - Oxidase - Catalase - EMB inconclusive Phenylalanine Deaminase - MIO - Bile Esculin + Casein Hydrolysis (Milk Plate) - Motility - Wet Hang and Drop - My options for what my bacteria is are: ...

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by ohyesitskim
Sun Oct 28, 2012 6:30 am
 
Forum: Microbiology
Topic: HELPP Please! Unidentifiable Unkown :(
Replies: 1
Views: 2451

HELPP Please! Unidentifiable Unkown :(

... + MR/VP +/ - Oxidase + Catalase + EMB grew but my microbe is gram positive 20120926_185556.jpg 1st side is mine 2nd side is E.coli Phenylalanine Deaminase - MIO - Casein Hydrolysis (Milk Plate) -

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by ohyesitskim
Mon Oct 15, 2012 10:44 pm
 
Forum: Microbiology
Topic: HELPP Please! Unidentifiable Unkown :(
Replies: 1
Views: 2451
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