Related Experiment Video
Updated: Aug 11, 2026

14:16
Analysis of Physiologic E-Selectin-Mediated Leukocyte Rolling on Microvascular Endothelium
Published on: February 11, 2009
Selectins and other mammalian sialic acid-binding lectins
1University of California, San Diego, La Jolla.
Current Opinion in Cell Biology
|April 1, 1992
Summary
New mammalian cell adhesion proteins bind to sialic acids. Understanding these interactions is crucial for cell biology and disease, despite past methodological challenges in studying these protein-carbohydrate recognitions.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Mammalian cells utilize cell adhesion proteins for various functions.
- Sialic acid-containing glycans are key recognition motifs in biological systems.
- Recent discoveries highlight novel mammalian cell adhesion proteins interacting with sialic acids.
Purpose of the Study:
- To clarify the molecular specificities of newly discovered mammalian cell adhesion proteins binding to sialic acid ligands.
- To address the confusion arising from methodological and interpretational challenges in previous studies.
- To underscore the biological and pathological significance of these protein-carbohydrate interactions.
Main Methods:
- Investigated the binding specificities of novel mammalian cell adhesion proteins.
- Analyzed protein-carbohydrate interactions involving sialic acid-containing ligands.
- Reviewed and critically assessed existing methodologies and interpretations in the field.
Main Results:
- Identified and characterized several novel mammalian cell adhesion proteins.
- Elucidated specific molecular interactions between these proteins and sialic acid ligands.
- Highlighted the importance of accurate methodologies for reliable interpretation.
Conclusions:
- The interactions between newly discovered mammalian cell adhesion proteins and sialic acids are biologically significant.
- These protein-carbohydrate recognition events play critical roles in normal blood cell biology.
- Dysregulation of these interactions contributes to the pathophysiology of various diseases.
Related Concept Videos
Integrins
Animal and protozoan cells do not have cell walls to help maintain shape and provide structural stability. Instead, these eukaryotic cells secrete a sticky mass of carbohydrates and proteins into the spaces between adjacent cells. This network of proteins and molecules is called an extracellular matrix or ECM.
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
Intracellular Signaling Affects Focal Adhesions
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
Cell Adhesion Molecules - Types and Functions
Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily involved in a...
CAM Families
The Integrin family of proteins is primarily involved in a...
Selectins
Cell adhesion is an essential aspect of multicellularity. While stable cell interactions usually occur between cells of the same type, transient cell interactions occur between cells of different tissue types, such as between neutrophils and endothelial cells. Selectins are one class of cell adhesion molecules (CAMs) that bind carbohydrate ligands to form transient cell adhesion. They are rod-like proteins with a long extracellular part of variable length ending with the lectin domain, which...
Immunoglobulin-like Cell Adhesion Molecules
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Cell Adhesion Molecules - Types and Functions
Cell adhesion molecules (CAMs) are pivotal to multicellularity and the coordinated functioning of tissues and organ systems. They enable physical interactions between cells and provide mechanical strength to tissues. They also function as receptors for signal transmission across the plasma membrane. The CAMs are broadly classified into four families - integrins, cadherins, selectins, and immunoglobulin-like CAMs (IgCAMs).
CAM Families
The Integrin family of proteins is primarily involved in a...
CAM Families
The Integrin family of proteins is primarily involved in a...

