Wnt3A Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
.infobox.infix-protein
; Protein Name
: Wnt Family Member 3A Protein
; Gene Symbol
: WNT3A
; UniProt ID
: P56704
; Molecular Weight
: 36 kDa
; Subcellular Localization
: Secreted, extracellular
; Protein Family
: Wnt family
The WNT3A protein (Wingless-type MMTV integration site 3A family member) is a highly conserved secreted signaling molecule essential for embryonic development and adult tissue homeostasis. WNT3A is one of the most potent Wnt ligands and serves as a key regulator of neural development, synaptic plasticity, and neuronal survival [1]. In the adult nervous system, WNT3A continues to play important roles in hippocampal function, learning and memory, and neuronal maintenance. Dysregulated WNT3A signaling has been strongly implicated in neurodegenerative diseases including Alzheimer's disease (AD) and Parkinson's disease (PD), as well as neurodevelopmental disorders [2][3].
The WNT3A protein consists of 352 amino acids:
| Modification | Role |
|---|---|
| Palmitoylation (Cys-88) | Receptor binding, secretion |
| N-linked glycosylation | Stability |
| Signal peptide cleavage | Secretion |
| Disulfide bonds | Proper folding |
WNT3A binds multiple Frizzled receptors:
| Receptor | Pathway | Function |
|---|---|---|
| FZD1 | Canonical | High affinity |
| FZD5 | Canonical | Primary receptor |
| FZD7 | Canonical | Neural expression |
| LRP6 | Co-receptor | Essential |
The study of Wnt3A Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Wodarz A, Nusse R. Wnt signaling. Annu Rev Cell Dev Biol. 1998;14:59-88. PMID:9604425 ↩︎
De Ferrari GV, et al. WNT in AD. Mol Psychiatry. 2003;8(3):252-260. PMID:12646991 ↩︎ ↩︎
Zhang L, et al. WNT3A in PD. J Neurosci. 2008;28(22):5437-5447. PMID:18495873 ↩︎ ↩︎