VIDEO
HIGHLIGHT
Log InSign up
Estrutura das proteínas - Química Orgânica - Química
SummaryTranscriptChat

Estrutura das proteínas - Química Orgânica - Química

New Section

In this section, the speaker discusses the four different structures of proteins, starting with the primary structure.

Proteins Structures

  • The primary structure of a protein is the chain of amino acids linked by peptide bonds. This sequence of amino acids defines the primary structure.
  • Variations in the primary structure, such as different types and quantities of amino acids in the chain, lead to unique proteins.
  • There are approximately 20 different types of amino acids, resulting in numerous possible primary structure sequences.

Secondary and Tertiary Structures

  • Proteins can fold upon themselves to form a secondary structure, often a helix maintained by hydrogen bonds between amino acids.
  • When a secondary structure folds further upon itself, it forms a tertiary structure held together by various chemical bonds.

Quaternary Structure and Protein Denaturation

  • Proteins can have a quaternary structure when multiple tertiary structures combine. An example is hemoglobin with four tertiary structures forming its quaternary shape.
Video description

Como é a estrutura de uma proteína? Nesta videoaula mostramos que as proteínas têm estruturas diferentes, sendo primária, secundária, terciária ou quaternária. Estude com o kuadro e fique mais preparado para as provas do ENEM e de outros vestibulares.