Protein

Proteins are strings of amino acids. Proteins can perform many types of functions such as providing structure, informational signaling, or performing chemistry. Enzymes are proteins that accomplish chemical reactions.

Amino Acids

Amino Acid	3-letter	1-letter	Structure
Alanine	Ala	A
Arginine	Arg	R
Asparagine	Asn	N
Aspartate	Asp	D
Cysteine	Cys	C
Glutamate	Glu	E
Glutamine	Gln	Q
Glycine	Gly	G
Histidine	His	H
Isoleucine	Iso	I
Leucine	Leu	L
Lysine	Lys	K
Methionine	Met	M
Phenylalanine	Phe	F
Proline	Pro	P
Serine	Ser	S
Threonine	Thr	T
Tryptophan	Trp	W
Tyrosine	Tyr	Y
Valine	Val	V

Amino Acid	3-letter	1-letter	Structure
Pyrrolysine	Pyl	O
Selenocysteine	Sec	U

Protein Structure

Primary Structure

Secondary Structure

alpha-helix beta-sheet

Tertiary Structure

folds

Quartenary Structure

complexes