4kbb
From Proteopedia
Structure of Botulinum neurotoxin B binding domain in complex with both synaptotagmin II and GD1a
Function
[BXB_CLOBO] Botulinum toxin acts by inhibiting neurotransmitter release. It binds to peripheral neuronal synapses, is internalized and moves by retrograde transport up the axon into the spinal cord where it can move between postsynaptic and presynaptic neurons. It inhibits neurotransmitter release by acting as a zinc endopeptidase that cleaves the '76-Gln-|-Phe-77' bond of synaptobrevin-2. [SYT2_MOUSE] May have a regulatory role in the membrane interactions during trafficking of synaptic vesicles at the active zone of the synapse. It binds acidic phospholipids with a specificity that requires the presence of both an acidic head group and a diacyl backbone.
About this Structure
4kbb is a 4 chain structure with sequence from Clostridium botulinum and Mus musculus. Full crystallographic information is available from OCA.
