KIF2B kinesin family member 2B [Homo sapiens (human)] - Gene

Summary

Official Symbol: KIF2Bprovided by HGNC
Official Full Name: kinesin family member 2Bprovided by HGNC
Primary source: HGNC:HGNC:29443
See related: Ensembl:ENSG00000141200 MIM:615142; AllianceGenome:HGNC:29443
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Summary: Predicted to enable ATP hydrolysis activity; microtubule binding activity; and microtubule motor activity. Involved in metaphase chromosome alignment; microtubule depolymerization; and regulation of chromosome segregation. Predicted to be located in cytosol. Predicted to be part of kinesin complex. Predicted to be active in cytoplasm and microtubule cytoskeleton. [provided by Alliance of Genome Resources, Jul 2025]
Orthologs: all
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Genomic context

Location:: 17q22

Exon count:: 1

Annotation release	Status	Assembly	Chr	Location
RS_2025_08	current	GRCh38.p14 (GCF_000001405.40)	17	NC_000017.11 (53822927..53825193)
RS_2025_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	17	NC_060941.1 (54698157..54700426)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	17	NC_000017.10 (51900288..51902554)

Chromosome 17 - NC_000017.11 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

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Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Chromosomal instability suppresses the growth of K-Ras-induced lung adenomas.
Title: Chromosomal instability suppresses the growth of K-Ras-induced lung adenomas.
GSK3beta-SKAP-Kif2b signaling axis constitutes a dynamic link between spindle microtubule plus-ends and mitotic chromosomes to achieve faithful cell division.
Title: Phosphorylation of SKAP by GSK3β ensures chromosome segregation by a temporal inhibition of Kif2b activity.
Data indicate that Cep170 association with the C-terminus of Kif2b enhances localization of Kif2b to the spindle.
Title: The microtubule-binding protein Cep170 promotes the targeting of the kinesin-13 depolymerase Kif2b to the mitotic spindle.
Data show that Polo-like kinase 1 (Plk1) regulates both the localization and activity of kinesin-13 protein Kif2b during mitosis to promote the correction of k-MT attachment errors to ensure mitotic fidelity.
Title: Plk1 regulates the kinesin-13 protein Kif2b to promote faithful chromosome segregation.
Observational study and genome-wide association study of gene-disease association. (HuGE Navigator)
Title: A genome-wide study reveals copy number variants exclusive to childhood obesity cases.
Data show that CLASP1-astrin-Kif2b complex acts as a central switch at kinetochores that defines mitotic progression and promotes fidelity by temporally regulating kinetochore-microtuble attachments.
Title: CLASP1, astrin and Kif2b form a molecular switch that regulates kinetochore-microtubule dynamics to promote mitotic progression and fidelity.
Here we show that two microtubule-depolymerizing kinesins, Kif2b and MCAK, stimulate kinetochore-microtubule dynamics during distinct phases of mitosis to correct mal-orientations.
Title: Genome stability is ensured by temporal control of kinetochore-microtubule dynamics.
These data demonstrate that Kif2b function is required for spindle assembly and chromosome movement and that the microtubule depolymerase activities of Kif2a, Kif2b, and MCAK fulfill distinct functions during mitosis in human cells.
Title: The kinesin-13 proteins Kif2a, Kif2b, and Kif2c/MCAK have distinct roles during mitosis in human cells.
kinesin-I-dependent neuronal AbetaPP transport, which controls AbetaPP processing, may be regulated by JIP1
Title: Amyloid beta protein precursor (AbetaPP), but not AbetaPP-like protein 2, is bridged to the kinesin light chain by the scaffold protein JNK-interacting protein 1.
when microtubules are absent, the neck linker exists in equilibrium between two structural states; microtubule binding may activate the nucleotide-sensing mechanism of kinesin
Title: Two conformations in the human kinesin power stroke defined by X-ray crystallography and EPR spectroscopy.

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Phenotypes

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Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

Variation

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See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

Interaction	Pubs
Knockdown of kinesin family member 2B (KIF2B) by siRNA inhibits HIV-1 replication in HeLa P4/R5 cells	PubMed

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables ATP binding	IEA Inferred from Electronic Annotation more info
enables ATP hydrolysis activity	IBA Inferred from Biological aspect of Ancestor more info
enables microtubule binding	IBA Inferred from Biological aspect of Ancestor more info
enables microtubule binding	IEA Inferred from Electronic Annotation more info
enables microtubule motor activity	IBA Inferred from Biological aspect of Ancestor more info
enables microtubule motor activity	IEA Inferred from Electronic Annotation more info

Process	Evidence Code	Pubs
involved_in cilium assembly	IBA Inferred from Biological aspect of Ancestor more info
involved_in cytoskeleton-dependent intracellular transport	IBA Inferred from Biological aspect of Ancestor more info
involved_in metaphase chromosome alignment	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in microtubule depolymerization	IEA Inferred from Electronic Annotation more info
involved_in microtubule depolymerization	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in microtubule depolymerization	TAS Traceable Author Statement more info	PubMed
involved_in microtubule-based movement	IBA Inferred from Biological aspect of Ancestor more info
involved_in microtubule-based movement	IEA Inferred from Electronic Annotation more info
involved_in regulation of chromosome segregation	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
is_active_in centrosome	IBA Inferred from Biological aspect of Ancestor more info
located_in centrosome	IEA Inferred from Electronic Annotation more info
is_active_in cytoplasm	IBA Inferred from Biological aspect of Ancestor more info
located_in cytosol	TAS Traceable Author Statement more info
part_of kinesin complex	IBA Inferred from Biological aspect of Ancestor more info
is_active_in microtubule	IBA Inferred from Biological aspect of Ancestor more info
is_active_in spindle	IBA Inferred from Biological aspect of Ancestor more info
located_in spindle	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: kinesin-like protein KIF2B

Names: kinesin protein; testis tissue sperm-binding protein Li 82P

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.