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Kinesin family member 3B
Available structures
PDB Ortholog search: PDBe, RCSB
Symbols KIF3B ; FLA8; HH0048; KLP-11
External IDs OMIM603754 MGI107688 HomoloGene55849 ChEMBL: 6109 GeneCards: KIF3B Gene
EC number
RNA expression pattern
PBB GE KIF3B 203943 at tn.png
More reference expression data
Species Human Mouse
Entrez 9371 16569
Ensembl ENSG00000101350 ENSMUSG00000027475
UniProt O15066 Q61771
RefSeq (mRNA) NM_004798 NM_008444
RefSeq (protein) NP_004789 NP_032470
Location (UCSC) Chr 20:
32.28 – 32.34 Mb
Chr 2:
153.29 – 153.33 Mb
PubMed search [1] [2]

Kinesin-like protein KIF3B is a protein that in humans is encoded by the KIF3B gene.[1][2]


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.[2][3][4]


KIF3B has been shown to interact with RAB4A.[5]

Model organisms[edit]

Model organisms have been used in the study of KIF3B function. A conditional knockout mouse line called Kif3btm1b(EUCOMM)Wtsi was generated at the Wellcome Trust Sanger Institute.[6] Male and female animals underwent a standardized phenotypic screen[7] to determine the effects of deletion.[8][9][10][11] Additional screens performed: - In-depth immunological phenotyping[12]


  1. ^ Nagase T, Ishikawa K, Nakajima D, Ohira M, Seki N, Miyajima N, Tanaka A, Kotani H, Nomura N, Ohara O (Apr 1997). "Prediction of the coding sequences of unidentified human genes. VII. The complete sequences of 100 new cDNA clones from brain which can code for large proteins in vitro". DNA Research 4 (2): 141–50. doi:10.1093/dnares/4.2.141. PMID 9205841. 
  2. ^ a b "Entrez Gene: KIF3B kinesin family member 3B". 
  3. ^ Scholey JM (Apr 1996). "Kinesin-II, a membrane traffic motor in axons, axonemes, and spindles". The Journal of Cell Biology 133 (1): 1–4. doi:10.1083/jcb.133.1.1. PMC 2120781. PMID 8601599. 
  4. ^ Lawrence CJ, Dawe RK, Christie KR, Cleveland DW, Dawson SC, Endow SA, Goldstein LS, Goodson HV, Hirokawa N, Howard J, Malmberg RL, McIntosh JR, Miki H, Mitchison TJ, Okada Y, Reddy AS, Saxton WM, Schliwa M, Scholey JM, Vale RD, Walczak CE, Wordeman L (Oct 2004). "A standardized kinesin nomenclature". The Journal of Cell Biology 167 (1): 19–22. doi:10.1083/jcb.200408113. PMC 2041940. PMID 15479732. 
  5. ^ Imamura T, Huang J, Usui I, Satoh H, Bever J, Olefsky JM (Jul 2003). "Insulin-induced GLUT4 translocation involves protein kinase C-lambda-mediated functional coupling between Rab4 and the motor protein kinesin". Molecular and Cellular Biology 23 (14): 4892–900. doi:10.1128/MCB.23.14.4892-4900.2003. PMC 162221. PMID 12832475. 
  6. ^ Gerdin AK (2010). "The Sanger Mouse Genetics Programme: high throughput characterisation of knockout mice". Acta Opthalmologica 88: 925-7.doi:10.1111/j.1755-3768.2010.4142.x: Wiley. 
  7. ^ a b "International Mouse Phenotyping Consortium". 
  8. ^ Skarnes WC, Rosen B, West AP, Koutsourakis M, Bushell W, Iyer V, Mujica AO, Thomas M, Harrow J, Cox T, Jackson D, Severin J, Biggs P, Fu J, Nefedov M, de Jong PJ, Stewart AF, Bradley A (Jun 2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature 474 (7351): 337–42. doi:10.1038/nature10163. PMC 3572410. PMID 21677750. 
  9. ^ Dolgin E (Jun 2011). "Mouse library set to be knockout". Nature 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718. 
  10. ^ Collins FS, Rossant J, Wurst W (Jan 2007). "A mouse for all reasons". Cell 128 (1): 9–13. doi:10.1016/j.cell.2006.12.018. PMID 17218247. 
  11. ^ White JK, Gerdin AK, Karp NA, Ryder E, Buljan M, Bussell JN, Salisbury J, Clare S, Ingham NJ, Podrini C, Houghton R, Estabel J, Bottomley JR, Melvin DG, Sunter D, Adams NC, Tannahill D, Logan DW, Macarthur DG, Flint J, Mahajan VB, Tsang SH, Smyth I, Watt FM, Skarnes WC, Dougan G, Adams DJ, Ramirez-Solis R, Bradley A, Steel KP (Jul 2013). "Genome-wide generation and systematic phenotyping of knockout mice reveals new roles for many genes". Cell 154 (2): 452–64. doi:10.1016/j.cell.2013.06.022. PMID 23870131. 
  12. ^ a b "Infection and Immunity Immunophenotyping (3i) Consortium". 

Further reading[edit]