Chapter 3 Flashcards
(32 cards)
What are amino acids?
molecules that have two functional groups
- amine (-NH2)
- carboxyl (-COOH) or deprotonated version (COO-)
Whats the alpha carbon?
Carbon bonded to 4 different substituents and is a tetrahedral
-binded to amine, carboxyl, h, and and r-group
What do the r-groups give?
properties and function
How do you name?
start from the alpha carbon and go down the R-group
L vs D amino acids
L - if go to left (counterclockwise = S configuration)
D - R
How many non polar, aliphatic R-groups?
7
- water fearing want to be on inside
- nonpolar - exhibits no separation of charge, no net dipole
How many aromatic R-groups?
3
How many polar, uncharged R-groups?
5
How many positively charged R-groups?
3
How many negative charged R-groups?
2
What are the non polar, aliphatic R-groups names?
Glycine, Alanine, Proline, Leucine, Methionine, Valine, Isoleucine
What are the non polar, aliphatic R-groups abbreviation?
Gly, Ala, Pro, Leu, Met, Val, Iso
What are the non polar, aliphatic R-groups letters?
G, A, P, L, M, V, I
What are the aromatic R-groups names?
Phenylalanine, Tyrosine, Tryptophan
What are the aromatic R-groups abbreviation?
Phe, Tyr, Trp
What are the aromatic R-groups letters?
F, Y, W
What are the polar uncharged R-groups names?
Serine, Threonine, Cystine, Asparagine, Glutamine
What are the polar uncharged R-groups abbriavtions?
Ser, Thr, Cys, Asn, Gln
What are the polar uncharged R-groups letters?
S, T, C, N, Q
What are the polar charged R-groups names?
Lysine, Arginine, Histidine
What are the polar charged R-groups abbriavtions?
Lys, Arg, His
What are the polar charged R-groups letters?
K, R, H
Negatively charges R-groups names
Asparate, Glutamate
Negatively charges R-groups abbr.
Asp, Glu
