Rabbit Bassoon Polyclonal Antibody | anti-BSN antibody
Bassoon Antibody: FITC
Immunohistochemistry (IHC)
(Immunohistochemistry analysis using Rabbit Anti-Bassoon Polyclonal Antibody (SPC-198). Tissue: Muscle. Species: Mouse. Primary Antibody: Rabbit Anti-Bassoon Polyclonal Antibody (SPC-198) at 1:400. Secondary Antibody: Alexa Fluor 488 Goat Anti-Rabbit. Counterstain: BTX (red). Localization: Selective staining of the NMJ.)
Scientific Background: Bassoon (1) is a 420 kDa protein that is a localized at the presynaptic nerve terminals and is believed to play a role in the structural and functional organization of the synaptic vesicle cycle. Bassoon is predicted to contain two double-zinc fingers, three coiled-coil regions, and two polyglutamine domains. The polyglutamine domains in the C-terminus are of interest, since it is known that for some human proteins, such as Huntington, abnormal amplification of this region can cause late-onset neurodegeneration. Bassoon is concentrated at sites opposite to postsynaptic densities in synaptic terminals and in cultured neurons, it is found to co-localize with GABA (A) and glutamate (GluR1) receptors.
NCBI and Uniprot Product Information
NCBI Description
Neurotransmitters are released from a specific site in the axon terminal called the active zone, which is composed of synaptic vesicles and a meshwork of cytoskeleton underlying the plasma membrane. The protein encoded by this gene is thought to be a scaffolding protein involved in organizing the presynaptic cytoskeleton. The gene is expressed primarily in neurons in the brain. A similar gene product in rodents is concentrated in the active zone of axon terminals and tightly associated with cytoskeletal structures, and is essential for regulating neurotransmitter release from a subset of synapses. [provided by RefSeq, Jul 2008]
Uniprot Description
BSN: involved in the organization of the cytomatrix at the nerve terminals active zone (CAZ) which regulates neurotransmitter release. Essential in regulated neurotransmitter release from a subset of brain glutamatergic synapses. Involved in the formation of the retinal photoreceptor ribbon synapses. Interacts with CAST1, RIMS1 and UNC13A. Part of a complex consisting of ERC2, RIMS1 and BSN. Localized to the active zone of presynaptic density. Mice lacking functional BSN showed a reduced excitability attributed to inactivation of a fraction of brain glutamatergic synapses. At these synapses, vesicles are clustered and docked in normal numbers, but are unable to fuse. In retina, mutants lacking functional BSN showed normal retinal anatomy, but synapses lacked anchoring of the photoreceptor ribbon to the presynaptic active zone resulting in impaired photoreceptor synaptic transmission. Two alternatively spliced isoforms have been reported.
Protein type: Cytoskeletal
Chromosomal Location of Human Ortholog: 3p21.31
Cellular Component: axon; postsynaptic density; dendrite; presynaptic active zone; excitatory synapse; cell junction; nucleus
Molecular Function: metal ion binding
Biological Process: synaptic transmission
Research Articles on BSN
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