KIF21B

KIF21B
Identifiers
Aliases	KIF21B , kinesin family member 21B
External IDs	OMIM: 608322; MGI: 109234; GeneCards: KIF21B
Gene location (Human)
Chr.	Chromosome 1 (human)
End	201,023,714 bp
Gene location (Mouse)
Chr.	Chromosome 1 (mouse)
End	136,105,736 bp
RNA expression pattern
	Top expressed in
	ganglionic eminence; ; Brodmann area 10; ; Brodmann area 46; ; granulocyte; ; blood; ; retinal pigment epithelium; ; entorhinal cortex; ; Region I of hippocampus proper; ; orbitofrontal cortex; ; frontal pole;
	Top expressed in
	granulocyte; ; ganglionic eminence; ; neural layer of retina; ; mesenteric lymph nodes; ; thymus; ; blood; ; visual cortex; ; spleen; ; primary visual cortex; ; Rostral migratory stream;
	More reference expression data
	n/a
Gene ontology
Molecular function	microtubule binding ; microtubule motor activity ; nucleotide binding ; ATPase activity ; ATP binding ;
Cellular component	cytoplasm ; microtubule ; cytoskeleton ; kinesin complex ; axon ; dendrite ; growth cone ; cytoplasmic vesicle ; cell projection ;
Biological process	microtubule-based movement ;
	Sources:Amigo / QuickGO
Orthologs
Databases	NCBI: entry; OMA: entry
	23046
	16565
	ENSG00000116852
	ENSMUSG00000041642
	O75037
	Q9QXL1
	NM_001252100 ; NM_001252102 ; NM_001252103 ; NM_017596
	NM_001039472 ; NM_019962 ; NM_177126
	NP_001239029 ; NP_001239031 ; NP_001239032 ; NP_060066
	NP_001034561
	Wikidata
View/Edit Human	View/Edit Mouse

Last updated November 02, 2026

Kinesin family member 21B (KIF21B), also known as kinesin-4, is a human protein encoded by the KIF21B gene. It is part of the kinesin family of motor proteins.

References

1 2 3 GRCh38: Ensembl release 89: ENSG00000116852 – Ensembl, May 2017
1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000041642 – Ensembl, May 2017
↑ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
↑ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

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[refGRCh38Ensembl-1] 1 2 3 GRCh38: Ensembl release 89: ENSG00000116852 – Ensembl, May 2017

[refGRCm38Ensembl-2] 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000041642 – Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

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