Tag: Cell signaling

WD40 repeat proteins commonly form seven-bladed beta-propellers that function as versatile platforms for protein interactions, signaling, transcription, protein degradation, and cellular regulation.

Leucine-rich repeats (LRRs) are protein structural units that form curved domains for molecular recognition. They play important roles in immune defense, cell signaling, cell adhesion, and the development of tissues and the nervous system.

HEAT repeats are structural units made of alpha helices that help proteins interact with one another. Discover their structure and roles in cellular transport, signaling, metabolism, and protein complex assembly.

Tetratricopeptide repeats (TPRs) are protein domains that help proteins recognize and bind to specific partners. Learn about their structure and roles in protein folding, cell signaling, transport, and other cellular processes.

Cell biology is the study of cells, their structures, functions, interactions, and processes. Learn about cell types, organelles, membranes, metabolism, cell division, signaling, differentiation, and other fundamental cellular processes.

Protein sulfation is an important modification that regulates protein interactions, cell adhesion, extracellular signaling, immune responses, coagulation, and tissue organization. Explore tyrosine sulfation, glycosaminoglycan sulfation, sulfotransferases, PAPS, and their roles in health and disease.

Protein ADP-ribosylation is an important post-translational modification that uses NAD+ to regulate proteins and cellular pathways. Explore mono- and poly-ADP-ribosylation, PARP enzymes, DNA repair, chromatin regulation, cancer, metabolism, inflammation, and cell death.

Protein phosphorylation is a reversible post-translational modification that regulates protein activity, stability, localization, interactions, and cellular signaling. Learn about protein kinases, phosphatases, phosphorylation sites, signaling pathways, phosphoproteomics, disease mechanisms, and therapeutic applications.

Post-translational modifications (PTMs) are biochemical changes that occur during or after protein synthesis and regulate protein structure, activity, stability, localization, interactions, and degradation. This overview introduces the major types of PTMs, their biological functions, mechanisms, role in disease, and methods used to study protein modifications.

Cells are dynamic systems that perform essential functions such as metabolism, respiration, signaling, migration, division, and homeostasis. This article explores how these interconnected processes sustain life at the microscopic level.