BioScience Dictionary

 
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Found Carboxyl group 8 times.

Displaying results 1 to 10.

1. Amide linkage
This is a carboxylic acid containing an amino group (-NH2). In an alpha amino acid, the amino group is attached to the carbon atom directly beside the carboxyl group.

2. Amino terminal (amino terminus)
The end of a polypeptide chain with the unattached amino group (-NH2 group). Each amino acid in the chain has an amino group on one side (which is attached to the carboxyl group (a -COOH group) of the previous amino acid) and a carboxyl group on the other side (which is attached to the amino group of the next amino acid). The other end of the polypeptide chain is called the carboxyl terminal .

3. Carboxyl group
-COOH group. One of the oxygens is double-bonded to the carbon atom, making it a carbonyl group , and the other oxygen is single bonded to the carbon on one side, and single bonded to the hydrogen on the other. The remaining bond on the carbon atom is attached to the rest of the molecule. Organic molecules containing carboxyl groups are an important, major group of compounds studied in the field of organic chemistry .

4. Carboxyl terminal (carboxyl terminus)
The end of a polypeptide chain with the unattached carboxyl group (a -COOH group). Each amino acid in the middle of the chain has an amino group (a -NH2 group) on one side (which is attached to the carboxyl group of the previous amino acid) and a carboxyl group on the other side (which is attached to the amino group of the next amino acid). The other end of the polypeptide chain is called the amino terminal .

5. Carboxyl-terminal residue
This amino acid residue defines the carboxyl terminus of the polypeptide ; it's the only residue with a free alpha-carboxyl group.

6. Citric acid
An important intermediate in the citric acid cycle which breaks down glucose into water and carbon dioxide when oxygen is present. The acid contains three carboxyl group s, has the chemical formula of C6H8O7, and is found in citrus fruits (oranges, grapefruit, lemons, etc.). It is used as an antioxidant and as artificial flavoring in commercially-processed foods.

7. Ester
* A general term for any organic molecule produced by combining an acid with an alcohol . * A derivative of carboxylic acid ( acid with a carboxyl group -COOH) which has the general formula RCOOR, where the R's stand for the same or different aliphatic groups (alkyl groups), aromatic groups (aryl groups), or hydrogen ions.

8. Peptide bond
An amide linkage between amino acid s by way of a bond formed between the amino group of one amino acid and the carboxyl group of another.