Biology 1 - Cells Review

Amino acids, transportation, and signals.

Arg (Arginine; R)

Hydrophilic; +

His (Histidine; H)

Hydrophilic; +

Lys (Lysine; K)

Hydrophilic; +

Asp (Aspartic Acid; D)

Hydrophilic; -

Glu (Glutamic acid; E)

Hydrophilic; -

Ser (Serine; S)

Hydrophilic; uncharged; polar

Thr (Threonine; T)

Hydrophilic; uncharged; polar

Asn (Asparagine; N)

Hydrophilic; uncharged; polar

Gln (Glutamine; Q)

Hydrophilic; uncharged; polar

Tyr (Tyrosine; Y)

Hydrophilic; uncharged; polar

Ala (Alanine; A)

Hydrophobic; nonpolar

Ile (Isoleucine; I)

Hydrophobic; nonpolar

Leu (Leucine; L)

Hydrophobic; nonpolar

Met (Methionine; M)

Hydrophobic; nonpolar

Phe (Phenylalanine; F)

Hydrophobic; nonpolar

Trp (Tryptophan; W)

Hydrophobic; nonpolar

Val (Valine; V)

Hydrophobic; nonpolar

Cys (Cysteine; C)

Sulfur

Gly (Glycine; G)

Hydrogen

Pro (Proline; P)

Cyclic

Primary Protein Structure

Polypeptide chains stabilized by peptide bonds.

Secondary Protein Structure

β-pleated sheet or α-helix stabilized by hydrogen bonds.

Tertiary Protein Structure

Folded polypeptides stabilized by multiple bonds.

Quaternary Protein Structure

Two or more polypeptides assembled into larger molecule stabilized by multiple bonds.