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Chapter 5

Protein Structure

מהם חלבונים?
מהם חלבונים?
Proteins are polymers of amino acids linked together by peptide bonds. Proteins and polypeptides are interchangeably used to refer to long chains of amino ...
ארגון חלבונים
ארגון חלבונים
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular ...
קיפול חלבונים
קיפול חלבונים
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to ...
משפחות חלבונים
משפחות חלבונים
Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein ...
שימור תחומי החלבונים
שימור תחומי החלבונים
Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally ...
חלבונים כדוריים וסיביים
חלבונים כדוריים וסיביים
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities. Globular ...
חלבונים לא מסודרים במהותם
חלבונים לא מסודרים במהותם
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows ...
הרכבת קומפלקס חלבונים
הרכבת קומפלקס חלבונים
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes ...
חלבונים מצומדים
חלבונים מצומדים
Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with ...
עמילואיד פיברילס
עמילואיד פיברילס
Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or ...
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