AMINO ACIDS AMINO ACIDS the R group varies
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AMINO ACIDS
AMINO ACIDS the R group varies Naturally-occurring amino acids have L-configuration …. . with only a very few having D-configuration
Amino Acids COOH H R COOH NH 2 H 2 N D- L- H R naturally-occurring amino acids are generally L-series
SOME EXAMPLE AMINO ACIDS glycine - the only achiral amino acid R=H alanine R = CH 3 valine R = CH(CH 3)2 20 different ones occur in proteins
SOME EXAMPLE AMINO ACIDS glycine - the only achiral amino acid R=H alanine R = CH 3 valine R = CH(CH 3)2 20 different amino acids occur in proteins They differ by the R group
THE 20 COMMON AMINO ACIDS Amino acids are classified by their R group NON-POLAR AMINO ACIDS • NEUTRAL • ACIDIC • BASIC
THE 9 NON-POLAR AMINO ACIDS Glycine Gly Alanine Ala Proline Isoleucine* Pro Ile * Essential amino acids Valine* Val Phenylalanine* Phe Tryptophan* Trp Leucine* Leu Methionine* Met
THE 6 NEUTRAL POLAR AMINO ACIDS serine Threonine* Thr Tyrosine Tyr Asparagine Asn * Essential amino acid Glutamine Gln Cysteine Cys
THE ACIDIC AMINO ACIDS aspartic acid Asp glutamic acid Glu
The Two Acidics
THE BASIC AMINO ACIDS Lysine* Lys * Essential amino acids Arginine* Arg Histidine* His
The Three Basics
Which of the following compounds is an -amino acid? 1. 2. 3. 4. Only (a) and (b) (a) and (c) (a) and (d)
Which of the following compounds is an -amino acid? 1. 2. 3. 4. Only (a) and (b) (a) and (c) (a) and (d)
Which of the following amino acids is achiral? 1. 2. 3. 4. Alanine Aspargine Glycine Threonine
Which of the following amino acids is achiral? 1. 2. 3. 4. Alanine Aspargine Glycine Threonine
The amino acid shown below has a side chain that is 1. 2. 3. 4. acidic basic nonpolar, neutral
The amino acid shown below has a side chain that is 1. 2. 3. 4. acidic basic nonpolar, neutral
Which of the following amino acids can form hydrogen bonds between their side-chain groups? 1. Alanine and glycine 2. Alanine and aspargine 3. Aspargine and threonine 4. Glycine and threonine
Which of the following amino acids can form hydrogen bonds between their side-chain groups? 1. Alanine and glycine 2. Alanine and aspargine 3. Aspargine and threonine 4. Glycine and threonine
Unusual L-Amino Acids Found in Proteins Fig. 3 -8 a
- Neutral amino acids
- Amino group and carboxyl group
- Amino group and carboxyl group
- Dehydration synthesis of amino acids
- Amino acid titration curves
- Titration curve of amino acids
- Deamination of amino acids
- Two amino acids joined together
- Transdeamination of amino acids
- 20 amino acid structure
- Early man
- Carbohydrates gives
- Titration plot
- Gluconeogenesis from lactate
- Glucogenic vs ketogenic
- Plp mechanism transamination
- Amino acids classification
- Chemsheets amino acids
- Optical properties of amino acids
- ε-amino
- Positively charged amino acids
- Diphthamide