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Pf4 Gene Detail
Summary
  • Symbol
    Pf4
  • Name
    platelet factor 4
  • Synonyms
    Cxcl4, Pf4, Scyb4
  • Feature Type
    protein coding gene
  • IDs
    MGI:1888711
    NCBI Gene: 56744
  • Alliance
  • Transcription Start Sites
    6 TSS
Location &
Maps
more
  • Sequence Map
    Chr5:90920362-90921242 bp, + strand
    From NCBI annotation of GRCm39
  • View this region in JBrowse
  • Genome Browsers
  • Genetic Map
    Chromosome 5, 44.78 cM
  • Mapping Data
    2 experiments
Strain
Comparison
more
  • SNPs within 2kb
    69 from dbSNP Build 142
  • Strain Annotations
    19
For selected strains:
Strain Gene Model ID Feature Type Coordinates Select Strains
C57BL/6J MGI_C57BL6J_1888711
protein coding gene Chr5:90920294-90921242 (+)
129S1/SvImJ ENSMUSG00200007696
protein coding gene Chr5:86654325-86655273 (+)
A/J ENSMUSG00195024186
protein coding gene Chr5:85823059-85824007 (+)
AKR/J ENSMUSG00220012021
protein coding gene Chr5:85968701-85969649 (+)
BALB/cJ ENSMUSG00180022327
protein coding gene Chr5:85682657-85683605 (+)
C3H/HeJ ENSMUSG00175036759
protein coding gene Chr5:87778274-87779222 (+)
C57BL/6NJ ENSMUSG00215022793
protein coding gene Chr5:86516028-86516976 (+)
CAROLI/EiJ MGP_CAROLIEiJ_G0027394
protein coding gene Chr5:83941714-83942666 (+)
CAST/EiJ ENSTCUG00005033460
protein coding gene Chr5:85427584-85428531 (+)
CBA/J ENSMUSG00210005548
protein coding gene Chr5:86578052-86579000 (+)
DBA/2J ENSMUSG00185037408
protein coding gene Chr5:88499007-88499955 (+)
FVB/NJ ENSMUSG00205019688
protein coding gene Chr5:85398848-85399796 (+)
JF1/MsJ ENSUMUG00000040669
protein coding gene Chr5:92777790-92778738 (+)
LP/J ENSMUSG00230023487
protein coding gene Chr5:93180671-93181619 (+)
NOD/ShiLtJ ENSMUSG00190029272
protein coding gene Chr5:85460547-85461495 (+)
NZO/HlLtJ ENSMUSG00225008416
protein coding gene Chr5:98328196-98329144 (+)
PWK/PhJ ENSLUMG00010025621
protein coding gene Chr5:85447843-85448791 (+)
SPRET/EiJ ENSMSPG00010033866
protein coding gene Chr5:87849799-87850743 (+)
WSB/EiJ ENSIUOG00005028920
protein coding gene Chr5:88462328-88463276 (+)



Homology
more
  • Human Ortholog
    PF4, platelet factor 4
  • Vertebrate Orthologs
    4
Vertebrate Orthology Source
Alliance of Genome Resources
  • Human Ortholog
    PF4, platelet factor 4
  • Synonyms
    CXCL4, PF-4, SCYB4
  • Links
    NCBI Gene ID: 5196
    UniProt: P02776

  • Chr Location
    4q13.3; chr4:73980811-73982124 (-)  GRCh38

  • Human Ortholog
    PF4V1, platelet factor 4 variant 1
  • Synonyms
    CXCL4L1, CXCL4V1, PF4A, PF4-ALT, SCYB4V1
  • Links
    NCBI Gene ID: 5197
    UniProt: P10720

  • Chr Location
    4q13.3; chr4:73853296-73854483 (+)  GRCh38

Human Diseases
more
  • Diseases
    1 with human PF4 associations

Human Disease Mouse Models
      
IDs
Click on a disease name to see all genes associated with that disease.

Mutations,
Alleles, and
Phenotypes
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  • Phenotype Summary
    2 phenotypes from 1 allele in 1 genetic background
    54 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 and heterozygous null mice display increased platelet counts and reduced thrombus formation following vascular injury.
Gene Ontology
(GO)
Classifications
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  • 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
Sequences &
Gene Models
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Representative SequencesLengthStrain/SpeciesFlank
genomic 56744 NCBI Gene Model | MGI Sequence Detail 881 C57BL/6J ±  kb
transcript NM_019932 RefSeq | MGI Sequence Detail 520 C57BL/6  
polypeptide Q9Z126 UniProt | EBI | MGI Sequence Detail 105 Not Applicable  
For the selected sequence
Protein
Information
less
Molecular
Reagents
less
  • All nucleic 39
    cDNA 32
    Primer pair 6
    Other 1
    Antibodies 1

    Microarray probesets 3
References
more
  • Summaries
    All 110
    Developmental Gene Expression 15
    Gene Ontology 9
    Phenotypes 54
  • 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:385797 Xia M, et al., A machine learning-based megakaryocyte identification system uncovers resident organs, markers, and functional diversity. Dev Cell. 2026 May 11;

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)
Citing These Resources
Funding Information
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last database update
09/15/2026
MGI 6.29
The Jackson Laboratory