Proteins + Amino Acids

Structure of an Amino Acid:

Structure of an Amino Acid:

centralized carbon, H group, amino group, carboxyl group, r group

What are the two techniques that can help you identify the shape of a protein?

Mass Spectrometer and X-Ray Crystallography

Which is smaller: Protein or DNA?

Protein

How many naturally made Amino Acids are there?

20

beta - pleated sheets

alpha helix

What is the primary protein structure (1°)?

straight polypeptide chain

What is the secondary protein structure (2°)?

Beta-pleated sheets or alpha helix

What is the tertiary protein structure (3°)?

Folded back in on itself

What is the quaternary protein structure (4°)?

Multiple polypeptide chains

True or False: There is a pentinary structure for proteins.

False

Glycine

Gly (Hydrophobic)

Alanine

Ala (Hydrophobic)

Valine

Val (Hydrophobic)

Leucine

Leu (Hydrophobic)

Isoleucine

Ile (Hydrophobic)

Proline

Pro (Hydrophobic)

Methionine

Met (Hydrophobic)

Phenlyalanine

Phe (Hydrophobic)

Tyrosine

Tyr (Hydrophobic)

Tryptophan

Trp (Hydrophobic)

Serine

Ser (Hydrophilic - polar)

Threonine

Thr (Hydrophilic - polar)

Cysteine

Cys (Hydrophilic - polar)

Asparagine

Asn (Hydrophilic - polar)

Glutamine

Gln (Hydrophilic - polar)

Aspartic Acid

Asp (Hydrophilic - acidic {-})

Glutamic Acid

Glu (Hydrophilic - acidic {-})

Arginine

Arg (Hydrophilic - basic {+})

Histidine

His (Hydrophilic - basic {+})

Lysine

Lys (Hydrophilic - basic {+})