1What is the Post-Translational Modification for Kinases:
Phosphorylation caused by kinases, Serine and Threonine kinases and Tyrosine kinases.
2What is an Indel:
Mashup of insertions and deletion, these cause frameshifts.
3Base substitutions?
Change one nucleic base to another
4Base substitutions at DNA level:
Transitions - Base sequence changes but amino acid product stays the same. Transversion - Base sequence changes and amino acid product changes.
5Base substitutions at Protein (Molecular) level:
Synonymous (silent) mutation is base sequence changes but still encodes amino acid. Nonsense mutation is base sequence changes and coding codon changes to stop codon. Missense mutation when coding codon is change to a codon for a different amino acid. Conservative - Amino acid is relatively the same, Non conservative - Different size, Charge and Polarity.
6Postively charged amino acids?
Arginine, Histidine, Lysine
7Negatively charged amino acids?
Glutamic acid and Aspartic acid
8Polar amino acids?
Serine, Threonine, Asparagine, Glutamine, Tyrosine, Cysteine
9Nonpolar amino acids?
Glycine, Alanine, Leucine, Isoleucine, Valine, Methionine, Tryptophan, Phenylalaline
10Glycine and Alanine:
Very small R-group
11Tryptophan:
Has 2 rings so large, only AA other than methionine to have only one codon.
12Phenylalamine:
R group includes a phenyl ring, very large R-group
13Valine, Leucine and Isoleucine:
Easily interchanged with no effect
14Methionine:
1st Amino Acid AUG, contains Sulfur
15Proline:
Ring with NH2 group prevents rotation, found at ends of alpha helices
16Cysteine:
Terminal SH group allows for disulfide linkages; can hold shape or hold multiple polypeptides together with covalent bond.
17Serine and Threonine:
Targets of Ser - Thr Kinases; Fairly interchangeable
18Tyrosine:
Target of Tyr-kinases (usually receptor Tyr kinase). Starting material for melanin
19Asparagine:
Target for N-linked Glycosylation
20Glutamine:
The AA in RF1 or RF2 that coordinates water molecules for releasing Nascent Polypeptide
21Arginine:
Ionizes at physiological pH to have a + charge (salt bridge).
22Histidine:
Also ionizes + salt bridge, 6-10 in a row bind tightly to Nickel
23Lysine:
Also ionizes + salt bridge, Target of Ubiquitylation
24WHat is Ubiquitination?
An enzymatic post-translational modification in which a ubiquitin protein is attached to a substrate protein.
25Aspartic acid and Glutamic acid:
Ionizes to form Strong - charge for salt bridges
26What are Phosphomimotic Mutations?
The AA in RF1 or RF2 that coordinates water molecules for releasing Nascent polypeptide.