TALDO1 (Transaldolase) encodes a critical enzyme in the non-oxidative branch of the pentose phosphate pathway (PPP), catalyzing the transfer of three-carbon units between sugar phosphates. Together with transketolase (TKT), transaldolase forms the essential bridge connecting glycolysis to the pentose phosphate pathway, enabling nucleotide biosynthesis and NADPH production for cellular antioxidant defenses. TALDO1 deficiency and dysfunction have been strongly linked to neurodegeneration in Alzheimer's disease (AD), Parkinson's disease (PD), and other neurological conditions. [@martin2013]
TALDO1 (Transaldolase) encodes a critical enzyme in the non-oxidative branch of the pentose phosphate pathway (PPP), catalyzing the transfer of three-carbon units between sugar phosphates. Together with transketolase (TKT), transaldolase forms the essential bridge connecting glycolysis to the pentose phosphate pathway, enabling nucleotide biosynthesis and NADPH production for cellular antioxidant defenses. TALDO1 deficiency and dysfunction have been strongly linked to neurodegeneration in Alzheimer's disease (AD), Parkinson's disease (PD), and other neurological conditions. [@martin2013]
Overview
TALDO1 encodes a 337-amino acid enzyme that catalyzes the reversible reaction: sedoheptulose-7-phosphate + glyceraldehyde-3-phosphate ⇌ erythrose-4-phosphate + fructose-6-phosphate. Unlike transketolase, transaldolase does not require thiamine pyrophosphate as a cofactor, using a Schiff base intermediate for catalysis. The gene is located on chromosome 11p15.5 and is expressed in all tissues, with high expression in the liver and brain. [@gibson2013]
Gene Information
Protein Structure
Catalytic Domains
N-terminal domain: Substrate binding and catalytic activity
C-terminal domain: Dimerization interface
Active site: Lys-132 forms Schiff base intermediate
Combination therapy: With transketolase enhancement
Background
The study of Taldo1 Gene 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.
[Martin, M.A., et al, (2013) (2013)](https://pubmed.ncbi.nlm.nih.gov/22996079/)
[Gibson, G.E., et al, (2013) (2013)](https://pubmed.ncbi.nlm.nih.gov/24315776/)
[Zhao, Y., et al, (2011) (2011)](https://pubmed.ncbi.nlm.nih.gov/21567489/)
[Unknown, Perl, A. (2013). Metabolic pathways leading to autoimmunity and oxidative stress in systemic lupus erythematosus (2013)](https://pubmed.ncbi.nlm.nih.gov/23668380/)
[Belanger, M., et al, (2011) (2011)](https://pubmed.ncbi.nlm.nih.gov/21821353/)
[Unknown, Horecker, B.L. (2002). The pentose phosphate pathway (2002)](https://pubmed.ncbi.nlm.nih.gov/12374793/)