tryptophan
organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l -stereoisomer appears in mammalian protein. It is one of several essential amino acids needed in the diet; human beings cannot synthesize it from simpler metabolites. Young adults require about 7 mg of this amino acid per day per kg (3 mg per lb) of body weight. Nicotinic acid (niacin), a vitamin of the B complex, can be made from tryptophan in the body, but evidently the rate of transformation is insufficient for the demands of normal growth and maintenance, and hence nicotinic acid must be supplied in the diet. Deficiency of tryptophan in the diet enhances the progress of the vitamin-deficiency disease pellagra , which is treated by restoring nicotinic acid to the diet, usually supplemented with tryptophan. Bacteria in the intestine break tryptophan down to compounds such as skatole and indole, which to a great extent are responsible for the unpleasant odor of feces. Tryptophan contributes to the structure of proteins into which it has been incorporated by the tendency of its side chain to participate in hydrophobic interactions (see isoleucine ). The amino acid was isolated from casein (milk protein) in 1901, and its structure was established in 1907.
The Urban Dictionary Tee
Love it! Buyed it for my sister but I had to make it say her favorite anime 💀✨
LOVR THIS SHIRT OML SO CUTEEEEE😍😍😍
mine had gay on it. Instant sex.
I love my NIckIsBum T-Shirt, it is very comfortable.
used it as a cum rag
Great fit and soft material. Gave as gift. Big hit!
Great conversation piece! Plus I can never find anything with my name on it. This was a great find! Will definitely order more!!!!
Got exactly what I wanted.
Exactly what I expected, thanks!
I don't visit Urban Dictionary alit so I only recently saw they offered merch. I immediately started looking up words for potential Christmas gifts. Found the ideal gift for my brother & ordered a shirt. It arrived very quickly and I love it. It's exactly as pictured on the site and being able to customize it with his name makes it perfect. I only hope he loves it as much as I do. Will definitely keep Urban Dictionary in mind when I need to find a great gift.
i love my shirt i made it say sapnap cause yassssssssss
Best This is the best shirt I have ever gotten I love it and I definitly recomend it to any friend named Hailie
So cool to quickly be able to turn a trending phrase into wearable art!
it was really good i put dad with the def of tfu and lol
*clap* *clap* MEME REVIEW. this is so amazing, alexa play despacito 9001
Love this shirt. Got it for my brother for Christmas and I can’t wait for his reaction! Ordered size L and it seems maybe a little big? Thank you!
thankyou for all your kind reviews. For everyone complaining about the spelling we was high on the bezamine while writing it so fuck youuuuuu
I love it
I really love it it's me through and through. Thank you. And when I want another shirt made I will be going through you guys.
ThIs is perfect
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Size Guide
Measurements may vary by up to 2" (5 cm). Pro tip: Measure one of your t-shirts at home and compare!
A - Length
Measure from the top of the collar to the bottom hem
B - Width
Measure across the chest from armpit to armpit
Size Chart
| Size | Length | Width |
|---|---|---|
| XS | 27" | 16½" |
| S | 28" | 18" |
| M | 29" | 20" |
| L | 30" | 22" |
| XL | 31" | 24" |
| 2XL | 32" | 26" |
| 3XL | 33" | 28" |
| Size | Length | Width |
|---|---|---|
| XS | 69 cm | 42 cm |
| S | 71 cm | 46 cm |
| M | 74 cm | 51 cm |
| L | 76 cm | 56 cm |
| XL | 79 cm | 61 cm |
| 2XL | 81 cm | 66 cm |
| 3XL | 84 cm | 71 cm |