Protein and Amino Acid

Molecule Tutorials - Herong's Tutorial Examples

∟Protein and Amino Acid

This chapter provides quick introductions about proteins and amino acids.

What Is Amino Acid

The 20 Common Amino Acids

Peptide, Peptide Bond, Amino Acid Residues

What Is Protein

Protein Structure Levels

Alpha Helix and Beta Sheet

Protein Visualization - Ribbon Diagram

Composed Proteins or Protein Complexes

wwpdb.org - Worldwide PDB (Protein Data Bank)

What Is FASTA

Takeaways:

Amino acids are special molecules that share the sample molecule structure pattern consisting of a carbon center, an amino group, a carboxylic acid group, and a side chain sub-structure.
There are only 20 types of amino acids that are connected together to form proteins. They are called the 20 common amino acids and assigned with 20 letters individually.
A peptide is a chain of two or more amino acid residues linked together by peptide bonds, which are resulted from condensation reactions between two amino acids.
A protein is a peptide made of a mixed sequence of the 20 common amino acids found in living organisms in nature.
The smallest protein found in nature is called Trp-Cage, which has only 20 amino acid residues.
The largest protein is call Titin, which has 27,000 amino acid residues.
The protein sequence can be coiled into a stable structure called alpha helix.
The protein sequence can be turned and looped into a stable structure called beta sheet.
Multiple protein sequences can be arranged into a stable protein complex.