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Overview

Uniprot IDP63041
Protein NameComplexin-1
Gene NameCplx1
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
26 MLGGDEEKDPDAAKK
54 ERKAKYAKMEAEREV
6 **MEFVMKQALGGAT

Function

Positively regulates a late step in exocytosis of various cytoplasmic vesicles, such as synaptic vesicles and other secretory vesicles. Organizes the SNAREs into a cross-linked zigzag topology that, when interposed between the vesicle and plasma membranes, is incompatible with fusion, thereby preventing SNAREs from releasing neurotransmitters until an action potential arrives at the synapse. Also involved in glucose-induced secretion of insulin by pancreatic beta-cells. Essential for motor behavior

Protein Sequence

10 MEFVMKQALG 20 GATKDMGKML 30 GGDEEKDPDA 40 AKKEEERQEA 50 LRQAEEERKA 60 KYAKMEAERE 70 VMRQGIRDKY 80 GIKKKEEREA 90 EAQAAMEANS 100 EGSLTRPKKA 110 IPPGCGDEPE 120 EEDESILDTV 130 IKYLPGPLQD MFKK

Gene Ontology

Classification GO ID Description
Biological Process GO:0016079 synaptic vesicle exocytosis
Cellular Component GO:0044305 calyx of Held
Cellular Component GO:0005829 cytosol
Cellular Component GO:0030425 dendrite
Cellular Component GO:0098978 glutamatergic synapse
Cellular Component GO:0043025 neuronal cell body
Cellular Component GO:0043204 perikaryon
Cellular Component GO:0098794 postsynapse
Cellular Component GO:0098793 presynapse
Cellular Component GO:0032991 protein-containing complex
Cellular Component GO:0098685 Schaffer collateral - CA1 synapse
Cellular Component GO:0031201 SNARE complex
Cellular Component GO:0045202 synapse
Cellular Component GO:0070032 synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex
Cellular Component GO:0043195 terminal bouton
Molecular Function GO:0008289 lipid binding
Molecular Function GO:0000149 SNARE binding
Molecular Function GO:0017075 syntaxin-1 binding
Biological Process GO:0030073 insulin secretion
Biological Process GO:0050804 modulation of chemical synaptic transmission
Biological Process GO:0099145 regulation of exocytic insertion of neurotransmitter receptor to postsynaptic membrane
Biological Process GO:0031630 regulation of synaptic vesicle fusion to presynaptic active zone membrane

Reference

[1] Yao Y, Bade R, Li G, Zhang A, Zhao H et al.. Global-Scale Profiling of Differential Expressed Lysine-Lactylated Proteins in the Cerebral Endothelium of Cerebral Ischemia-Reperfusion Injury Rats.. Cell Mol Neurobiol 43(5):1989-2004. 2023 Jul. PMID: 36030297.

[2] Chen Y, Sun W, Sun Z, Zhao H, Wu T et al.. Effect of electroacupuncture on hippocampal protein lactylation in a rat model of vascular dementia.. Front Neurol 16:1629474. 2025. PMID: 40963935.