Tpp1 Gene Tripeptidyl Peptidase 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| Attribute | Value | [@miller2023] |-----------|-------| | Gene Symbol | TPP1 | | Gene Name | Tripeptidyl Peptidase 1 | | Official Full Name | Tripeptidyl Peptidase 1 | | Chromosomal Location | 11p15.4 | | GRCh38 Coordinates | chr11:2,653,227-2,660,457 | | NCBI Gene ID | 1201 | | OMIM ID | 607998 | | Ensembl ID | ENSG00000142149 | | UniProt ID | O14773 | | Gene Family | S9 family serine proteases |
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Overview
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TPP1 Gene
Introduction
Tpp1 Gene Tripeptidyl Peptidase 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| Attribute | Value | [@miller2023] |-----------|-------| | Gene Symbol | TPP1 | | Gene Name | Tripeptidyl Peptidase 1 | | Official Full Name | Tripeptidyl Peptidase 1 | | Chromosomal Location | 11p15.4 | | GRCh38 Coordinates | chr11:2,653,227-2,660,457 | | NCBI Gene ID | 1201 | | OMIM ID | 607998 | | Ensembl ID | ENSG00000142149 | | UniProt ID | O14773 | | Gene Family | S9 family serine proteases |
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Overview
Mermaid diagram (expand to render)
The TPP1 gene encodes tripeptidyl peptidase 1 (TPP1), a lysosomal serine protease that cleaves tripeptides from the N-terminus of proteins. This enzyme is essential for the degradation of proteins within lysosomes. Mutations in TPP1 cause Late Infantile Neuronal Ceroid Lipofuscinosis (LINCL), also known as Batten disease variant<sup>[1]</sup>.
Function
Enzymatic Activity
TPP1 is a 563-amino acid glycoprotein (59 kDa) that functions as a homodimer in the lysosome. It displays tripeptidyl-peptidase activity, cleaving N-terminal tripeptides from various substrates<sup>[1]</sup>.
Normal Physiological Roles
Lysosomal Protein Degradation: Primary exopeptidase in lysosomes
Protein Turnover: Essential for cellular protein homeostasis
Neuronal Function: Critical for neuronal health
[Autophagy](/entities/autophagy): Participates in protein clearance pathways
Developmental Expression: Increases with age in brain
Transcript: 1.8 kb mRNA, 13 exons
Therapeutic Approaches
Current Treatments
Anticonvulsants: Seizure management
Supportive care: Multidisciplinary support
Physical/occupational therapy: Maintain function
FDA-Approved Therapy
Cerliponase alfa (Brineura): Recombinant human TPP1 (rhTPP1) delivered via intracerebroventricular infusion. First disease-modifying therapy for LINCL<sup>[2]</sup>.
Experimental Therapies
Gene therapy: AAV-vector delivery in clinical trials
Stem cell therapy: Investigational approaches
Small molecule chaperones: Being studied
Research Directions
Improving enzyme delivery to all brain regions
Long-term outcomes of cerliponase alfa therapy
Gene therapy approaches
Biomarker development
Background
The study of Tpp1 Gene Tripeptidyl Peptidase 1 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.