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
- 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.
Table of Contents
About This Book
Introduction of Molecules
Molecule Names and Identifications
Molecule Mass and Weight
►Protein and Amino Acid
Nucleobase, Nucleoside, Nucleotide, DNA and RNA
Gene and Chromosome
Protein Kinase (PK)
SDF (Structure Data File)
RDKit: Open-Source Cheminformatics Software
PyMol GUI and CLI
PyMol Editing Functions
PyMol Measurement Functions
PyMol Movie Functions
PyMol Python Integration
PyMol Object Functions
ChEMBL Database - European Molecular Biology Laboratory
PubChem Database - National Library of Medicine
PDB (Protein Data Bank)
INSDC (International Nucleotide Sequence Database Collaboration)
HGNC (HUGO Gene Nomenclature Committee)
Resources and Tools
Molecule Related Terminologies
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