Related Experiment Video
Updated: Feb 3, 2026
06:50
Author Spotlight: A Computational Approach to Decipher Amino Acid Preferences in Multispecific Protein-Protein Interactions
Published on: January 26, 2024
2.6K
Clustered complementary amino acid pairing (CCAAP) for protein-protein interaction
Christina Kyung Eun Baek1, Chang-Ho Baek2
1Department of Bioengineering, University of California-Berkeley, Berkeley, CA, USA.
Biotechnology Letters
|October 26, 2018
Summary
Scientists developed Clustered Complementary Amino Acid Pairing (CCAAP) to design polypeptide interactions. This method identifies amino acid pairing patterns crucial for protein-protein interactions (PPI), enabling new sequence design strategies.
Area of Science:
- Biochemistry
- Molecular Biology
- Bioinformatics
Background:
- Designing polypeptide sequences for specific protein interactions is a significant challenge in molecular biology.
- Understanding the fundamental principles of protein-protein interactions (PPI) is crucial for various biological processes.
Purpose of the Study:
- To introduce and validate the concept of Clustered Complementary Amino Acid Pairing (CCAAP) as a key factor in PPI.
- To develop a novel method for designing oligopeptide sequences capable of binding to target proteins based on CCAAP principles.
Main Methods:
- Analysis of 82 protein-protein interaction (PPI) structure data.
- Identification and characterization of Clustered Complementary Amino Acid Pairing (CCAAP) boxes within PPI sites.
- Unveiling amino acid pairing preferences and patterns within CCAAP boxes.
Main Results:
- Complementary Amino Acid Pairing (CAAP) involves amino acids encoded by reverse complementary codons and aligns with physicochemical requirements.
- CCAAP boxes, clusters of CAAP interactions, are prevalent in all analyzed PPI sites.
- Identified specific amino acid pairing preferences and patterns within CCAAP boxes.
Conclusions:
- The study provides evidence supporting the CCAAP principle as fundamental to protein-protein interactions.
- The findings enable a new computational approach for designing specific polypeptide binders for target proteins.
Keywords:
Clustered complementary amino acid pairingProtein detectionProtein targetingProtein–protein interactionRecombinant antibodySynthetic antibodySynthetic biologyMore Related Videos
Related Concept Videos
03:42Amino acids
105.5K
Amino acids are the monomers that comprise proteins. Each amino acid has the same fundamental structure, which consists of a central carbon atom, or the alpha (α) carbon, bonded to an amino group (NH2), a carboxyl group (COOH), and to a hydrogen atom. Every amino acid also has another atom or group of atoms bonded to the central atom known as the R group. There are 20 common amino acids present in proteins, each with a different R group. Variation in the amino acid sequence is responsible for...
105.5K
02:04Protein-protein Interfaces
14.7K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.7K
02:15Protein and Protein Structure
87.6K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
A protein's shape is critical to its function. For example, an enzyme...
87.6K
03:06From DNA to Protein
22.4K
The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
22.4K
01:22Protein Folding
127.4K
Overview
127.4K
02:18Intrinsically Disordered Proteins
19.5K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
19.5K