Annotated protein:Kinesin-like protein KIF3A (Microtubule plus end-directed kinesin motor 3A). Gene symbol: KIF3A. Taxonomy: Mus musculus (Mouse). Uniprot ID: P28741
antibody wiki:
SynGO gene info:SynGO data @ KIF3A
Ontology domain:Biological Process
SynGO term:anterograde dendritic transport (GO:0098937)
Synapse type(s):hippocampus
Annotated paper:Ichinose S, et al. "Mechanism of Activity-Dependent Cargo Loading via the Phosphorylation of KIF3A by PKA and CaMKIIa" Neuron. 2015 Sep 2;87(5):1022-35 PMID:26335646
Figure(s):Figure 1-8
Annotation description:"KIF3, a member of the kinesin-2 family, forms a heterotrimeric complex that consists of KIF3A, KIF3B, and kinesin-associated protein 3 (KAP3) (Kondo et al., 1994, Teng et al., 2005, Yamazaki et al., 1996)."

Authors show that KIF3A is involved in the transport of N-cadherin (Cadherin-2, gene CDH2), a synaptic adhesion molecule, to dendritic spines.

Highlights section;
- The cargo-bound KIF3A was phosphorylated by specific kinases, PKA and CaMKIIa.
- Phosphorylation of the KIF3A upregulates the loading and transport of N-cadherin.
- N-cadherin was accumulating in the spine during homeostatic plasticity.
- Phospho-KIF3A enhances the N-cadherin accumulation during homeostatic plasticity.
Evidence tracking, Biological System:Intact tissue
Cultured neurons
Evidence tracking, Protein Targeting:Over-expression
Antagonist / agonist
Antibody (detection)
Evidence tracking, Experiment Assay:Confocal
IP + WB/MSMS
Western blot
Annotator(s):Frank Koopmans (ORCID:0000-0002-4973-5732)
Guus Smit (ORCID:0000-0002-2286-1587)
Matthijs Verhage (ORCID:0000-0002-2514-0216)
Lab:Department of Functional Genomics, Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
Additional literature:biochemical characterization of KIF3A/B/C in rat brain. @ PMID:9487132

immunoprecipitations in mouse brain lysate show KIF3C associates with KIF3A, but not KIF3B. Also shows KIF3B/C in synaptic biochemical fractions and microtubule binding characteristics of KIF3C @ PMID:9450952

KIF3A/B are enriched in the same synaptic biochemical fractions prepared from mouse brain.

KIF3A and KIF3B form a heterodimer in vitro that provides plus end--directed motor activity.

The KIF3 complex Is a heterotrimeric motor in vivo. @ PMID:7559760

"Here we characterized a new member of the kinesin superfamily, KIF3A (50-nm rod with globular head and tail), and found that it is localized in neurons, associated with membrane organdie fractions, and accumulates with anterogradely moving membrane organelles after ligation of peripheral nerves. Furthermore, native KIF3A (a complex of 80/85 KIF3A heavy chain and a 95-kD polypeptide) revealed microtubule gliding activity and baculovirus-expressed KIF3A heavy chain demonstrated microtubule plus end-directed (anterograde) motility in vitro" @ PMID:7515068
SynGO annotation ID:5444
Dataset release (version):20231201
View annotation as GO-CAM model:Gene Ontology