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Kif21b Gene Detail
Summary
  • Symbol
    Kif21b
  • Name
    kinesin family member 21B
  • Synonyms
    2610511N21Rik, mKIAA0449, N-5 kinesin
  • Feature Type
    protein coding gene
  • IDs
    MGI:109234
    NCBI Gene: 16565
  • Alliance
  • Transcription Start Sites
    10 TSS
Location &
Maps
more
  • Sequence Map
    Chr1:136059127-136105736 bp, + strand
    From Ensembl annotation of GRCm39
  • View this region in JBrowse
  • Genome Browsers
  • Genetic Map
    Chromosome 1, 59.61 cM
  • Mapping Data
    3 experiments
Strain
Comparison
more
  • SNPs within 2kb
    1251 from dbSNP Build 142
  • Strain Annotations
    19
  • RFLP
For selected strains:
Strain Gene Model ID Feature Type Coordinates Select Strains
C57BL/6J MGI_C57BL6J_109234
protein coding gene Chr1:136059127-136105739 (+)
129S1/SvImJ ENSMUSG00200007091
protein coding gene Chr1:133680812-133727398 (+)
A/J ENSMUSG00195015498
protein coding gene Chr1:132746660-132793276 (+)
AKR/J ENSMUSG00220002660
protein coding gene Chr1:132637535-132684143 (+)
BALB/cJ ENSMUSG00180011157
protein coding gene Chr1:133287224-133333845 (+)
C3H/HeJ ENSMUSG00175006441
protein coding gene Chr1:132990720-133037335 (+)
C57BL/6NJ ENSMUSG00215012548
protein coding gene Chr1:132989075-133035688 (+)
CAROLI/EiJ MGP_CAROLIEiJ_G0014651
protein coding gene Chr1:127741538-127788559 (+)
CAST/EiJ ENSTCUG00005037313
protein coding gene Chr1:131920985-131967687 (+)
CBA/J ENSMUSG00210013931
protein coding gene Chr1:132921041-132967655 (+)
DBA/2J ENSMUSG00185029663
protein coding gene Chr1:137298469-137344940 (+)
FVB/NJ ENSMUSG00205002191
protein coding gene Chr1:132256750-132303367 (+)
JF1/MsJ ENSUMUG00000045255
protein coding gene Chr1:136423714-136470418 (+)
LP/J ENSMUSG00230038623
protein coding gene Chr1:136821844-136868452 (+)
NOD/ShiLtJ ENSMUSG00190002712
protein coding gene Chr1:132935058-132981676 (+)
NZO/HlLtJ ENSMUSG00225019811
protein coding gene Chr1:140588814-140635423 (+)
PWK/PhJ ENSLUMG00010001746
protein coding gene Chr1:132047592-132094286 (+)
SPRET/EiJ ENSMSPG00010011707
protein coding gene Chr1:134847718-134894451 (+)
WSB/EiJ ENSIUOG00005027519
protein coding gene Chr1:132704829-132751424 (+)



Homology
more
  • Human Ortholog
    KIF21B, kinesin family member 21B
  • Vertebrate Orthologs
    3
Vertebrate Orthology Source
Alliance of Genome Resources
  • Human Ortholog
    KIF21B, kinesin family member 21B
  • Links
    NCBI Gene ID: 23046
    UniProt: O75037

  • Chr Location
    1q32.1; chr1:200969390-201023714 (-)  GRCh38

Mutations,
Alleles, and
Phenotypes
less
  • Phenotype Summary
    11 phenotypes from 2 alleles in 2 genetic backgrounds
    18 phenotype references
Phenotype Overview

adipose tissue
behavior/neurological
cardiovascular system
cellular
craniofacial
digestive/alimentary system
embryo
endocrine/exocrine glands
growth/size/body
hearing/vestibular/ear
hematopoietic system
homeostasis/metabolism
integument
immune system
limbs/digits/tail
liver/biliary system
mortality/aging
muscle
nervous system
pigmentation
renal/urinary system
reproductive system
respiratory system
skeleton
taste/olfaction
neoplasm
vision/eye

Click cells to view annotations.
Homozygous KO reduces dendrite branching and spine density as a result of reduced microtubule growth, resulting in impaired spatial learning and cued conditioning behavior.
Gene Ontology
(GO)
Classifications
less
  • All GO Annotations
  • GO References
Molecular Function

carbohydrate derivative binding
cytoskeletal protein binding
DNA binding
enzyme regulator
hydrolase
ligase
lipid binding
oxidoreductase
RNA binding
signaling receptor activity
signaling receptor binding
transcription
transferase
transporter
Biological Process

carbohydrate derivative metabolism
cell differentiation
cell population proliferation
cellular component organization
DNA-templated transcription
establishment of localization
homeostatic process
immune system process
lipid metabolic process
programmed cell death
protein metabolic process
response to stimulus
signaling
system development
Cellular Component

cell projection
cytoplasmic vesicle
cytoskeleton
cytosol
endoplasmic reticulum
endosome
extracellular region
Golgi apparatus
mitochondrion
membraneless organelle
nucleus
organelle envelope
organelle lumen
plasma membrane
protein-containing complex
synapse
vacuole
Click cells to view annotations.
Expression
less
Expression Overview

early conceptus
embryo ectoderm
embryo endoderm
embryo mesoderm
embryo mesenchyme
extraembryonic component
alimentary system
auditory system
branchial arches
cardiovascular system
connective tissue
endocrine system
exocrine system
hemolymphoid system
integumental system
limbs
liver and biliary system
musculoskeletal system
nervous system
olfactory system
reproductive system
respiratory system
urinary system
visual system
Click cells to view annotations.


  • Assay Results
  • Tissues
  • cDNA Data
  • Literature Summary
  • Comparison Matrix
  • Sequences &
    Gene Models
    less
    Representative SequencesLengthStrain/SpeciesFlank
    genomic ENSMUSG00000041642 Ensembl Gene Model | MGI Sequence Detail 46610 C57BL/6J ±  kb
    transcript ENSMUST00000130864 Ensembl | MGI Sequence Detail 9254 Not Applicable  
    polypeptide ENSMUSP00000114297 Ensembl | MGI Sequence Detail 1639 Not Applicable  
    For the selected sequence
    Protein
    Information
    less
    Molecular
    Reagents
    less
    • All nucleic 188
      cDNA 186
      Primer pair 1
      Other 1
      Antibodies 1

      Microarray probesets 3
    Other
    Accession IDs
    less
    MGD-MRK-38278, MGI:2443746
    References
    more
    • Summaries
      All 51
      Developmental Gene Expression 4
      Gene Ontology 6
      Phenotypes 18
    • Earliest
      J:134667 Roderick TH, et al., Two radiation-induced chromosomal inversions in mice (Mus musculus). Proc Natl Acad Sci U S A. 1970 Oct;67(2):961-7
    • Latest
      J:345621 Adams DJ, et al., Genetic determinants of micronucleus formation in vivo. Nature. 2024 Mar;627(8002):130-136

    Contributing Projects:
    Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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    Funding Information
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    last database update
    09/01/2026
    MGI 6.24
    The Jackson Laboratory