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Amino acids
Biochem. Hapers 12- 20, Lipp 1-12
21
Other
Professional
08/16/2010

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Cards

Term
How many different amino acids are there?
Definition
20
Term
Are all amino acids alpha or beta? why?
Definition
alpha, b/c all amine groups are attached to the alpha carbons
Term
What does it mean for an amino acid to be aliphatic?
Definition
Does not contain aromatic ring on side chain
Term
What are the aliphatic amino acids?
Definition
Glycine, Alanine, Valine, Leucine, Isoleucine
Term
How many isoforms of threonine are there and who discovered them?
Definition
3, Harold D. West
Term
Which amino acid contains a thioether?
Definition
Methionine
Term
Which amino acid contains a monocarboxylic diamino?
Definition
Lysine
Term
Which amino acid contains an indole ring?
Definition
Tryptophan
Term
Which amino acid contains a heterocyclic ring and an imadazole ring?
Definition
Histidine
Term
How large (usually) is a disulfide linkage?
Definition
7 Angstroms
Term
In titration what is the Pi zone?
Definition
The zone where the compound has a zero net charge
Term
Which is the smallest of all gamma globulins?
Definition
IgG
Term
When two compounds are found in equal concentrations in solution how is this represented?
Definition
pK value
Term

Which amino acid contains a sulfhydro group?

 

Definition
Cysteine
Term
2 cysteins = ???
Definition
cystine
Term
What are the essential amino acids?
Definition
Phenylalanine, Valine, Threonine, Tryptophan, Isoleucine, Methionine, Histidine, Arginine, Leucine, Lysine
Term
Which essential amino acids will humans begin to be able to synthesize as they mature?
Definition
Histidine, Arginine
Term
What is a zwitterion?
Definition
  • Molecules with the same number of ionizable groups and therefore have no net charge
Pi
Term
How is the pK value defined?
Definition
The point at which equal amts of two forms exist in solution 
Term
Endo peptidases
Definition
Trypsin, Chymotrypsin
Term
Exo Peptidases
Definition
Amino peptidase, Carboxy peptidase
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