KIF3B

Kinesin-like protein KIF3B is a protein that in humans is encoded by the KIF3B gene.

Function

The protein encoded by this gene forms a heterotrimeric motor complex with kinesin family member 3A and KAP3 (kinesin accessory protein 3) to drive intra-flagellar transport and possibly to aid in chromosome movement during mitosis and meiosis. The encoded protein is a plus end-directed microtubule motor and can interact with the SMC3 subunit of the cohesin complex. In addition, the encoded protein may be involved in the intracellular movement of membranous organelles. The heterotrimeric KIF3B/KIF3A/KAP3 motor protein is a member of the kinesin-2 subfamily of the kinesin superfamily.

Interactions

KIF3B has been shown to interact with RAB4A.

Model organisms

Model organisms have been used in the study of KIF3B function. A conditional knockout mouse line called Kif3b^{tm1b(EUCOMM)Wtsi} was generated at the Wellcome Trust Sanger Institute. Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion. Additional screens performed: - In-depth immunological phenotyping

Kif3b knockout mouse phenotype

Characteristic	Phenotype
All data available at.
Peripheral blood leukocytes 6 Weeks	Abnormal
Insulin	Normal
Haematology 6 Weeks	Normal
Homozygous viability at P14	Abnormal
Recessive lethal study	Abnormal
Body weight	Normal
Neurological assessment	Normal
Grip strength	Normal
Dysmorphology	Normal
Indirect calorimetry	Normal
Glucose tolerance test	Normal
Auditory brainstem response	Normal
DEXA	Normal
Radiography	Normal
Eye morphology	Normal
Clinical chemistry	Normal
Haematology 16 Weeks	Normal
Peripheral blood leukocytes 16 Weeks	Normal
Heart weight	Normal
Salmonella infection	Normal
Cytotoxic T Cell Function	Normal
Spleen Immunophenotyping	Normal
Mesenteric Lymph Node Immunophenotyping	Normal
Bone Marrow Immunophenotyping	Normal
Epidermal Immune Composition	Normal