SP3 (Specificity Protein 3) is a transcription factor belonging to the SP/KLF family of zinc finger proteins. SP3 regulates the expression of numerous genes involved in cell proliferation, differentiation, and neuronal function. It has been implicated in Alzheimer's disease, Parkinson's disease, and various neurological disorders.
Gene Information
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SP3 — Specificity Protein 3
Gene Overview
Mermaid diagram (expand to render)
SP3 (Specificity Protein 3) is a transcription factor belonging to the SP/KLF family of zinc finger proteins. SP3 regulates the expression of numerous genes involved in cell proliferation, differentiation, and neuronal function. It has been implicated in Alzheimer's disease, Parkinson's disease, and various neurological disorders.
SP3 is a sequence-specific transcription factor that binds to GC-rich promoter elements (GC boxes) and regulates gene expression. It plays crucial roles in both normal development and disease processes.
Structural Features
Transactivation Domains: N-terminal regions required for transcriptional activation
Zinc Finger Domain: C-terminal DNA-binding domain with three C2H2-type zinc fingers
Repressor Domain: Contains domains that can recruit co-repressors
Biological Functions
Gene Regulation: Binds to GC box sequences (GGGGCGGGG) in target gene promoters
Cell Proliferation: Regulates genes involved in cell cycle control (e.g., cyclin D1)
Neuronal Differentiation: Controls expression of neuronal genes during development
Synaptic Plasticity: Regulates genes important for synaptic function
[Apoptosis](/entities/apoptosis): Can function as both pro- and anti-apoptotic regulator