Summary

Name NRXN1
Full Name Neurexin-1
Synonyms Neurexin I-alpha, Neurexin-1-alpha | KIAA0578
Primary ID Q9ULB1
Links - -
Type protein
Relations 15
Pathways Neurotransmitters release
Function Cell surface protein involved in cell-cell-interactions, exocytosis of secretory granules and regulation of signal transmission. Function is isoform-specific. Alpha-type isoforms have a long N-terminus with six laminin G-like domains and play an important role in synaptic signal transmission. Alpha-type isoforms play a role in the regulation of calcium channel activity and Ca(2+)-triggered neurotransmitter release at synapses and at neuromuscular junctions. They play an important role in Ca(2+)-triggered exocytosis of secretory granules in pituitary gland. They may effect their functions at synapses and in endocrine cells via their interactions with proteins from the exocytotic machinery. Likewise, alpha-type isoforms play a role in regulating the activity of postsynaptic NMDA receptors, a subtype of glutamate-gated ion channels. Both alpha-type and beta-type isoforms may play a role in the formation or maintenance of synaptic junctions via their calcium-dependent interactions (via the extracellular domains) with neuroligin family members, CBLN1 or CBLN2. In vitro, triggers the de novo formation of presynaptic structures. May be involved in specification of excitatory synapses. Alpha-type isoforms were first identified as receptors for alpha-latrotoxin from spider venom (By similarity).

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Relations

Regulator Mechanism target score
+ up-regulates activity img/direct-activation.png binding NLGN2 0.82
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
+ up-regulates activity img/direct-activation.png binding NRXN1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png post transcriptional regulation NRXN1 0.343
Publications: 1 Organism: Mus Musculus
+ up-regulates activity img/direct-activation.png binding NRXN1 0.35
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
+ up-regulates activity img/direct-activation.png binding NRXN1 0.836
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding NRXN1 0.651
Publications: 1 Organism: Chlorocebus Aethiops
Pathways:Neurotransmitters release
+ down-regulates quantity by repression img/direct_inhibition.png transcriptional regulation NRXN1 0.264
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation NRXN1 0.28
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding DAG1 0.396
Publications: 1 Organism: Homo Sapiens
Tissue: Brain
+ up-regulates activity img/direct-activation.png binding NRXN1 0.82
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding NRXN1 0.505
Publications: 1 Organism: Chlorocebus Aethiops
Pathways:Neurotransmitters release
+ up-regulates activity img/direct-activation.png binding NRXN1 0.836
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding NRXN1 0.571
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding NRXN1 0.765
Publications: 1 Organism: Homo Sapiens
+ up-regulates activity img/direct-activation.png binding NRXN1 0.617
Publications: 1 Organism: Chlorocebus Aethiops