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Fasn Gene Detail
Summary
  • Symbol
    Fasn
  • Name
    fatty acid synthase
  • Synonyms
    A630082H08Rik, FAS
  • Feature Type
    protein coding gene
  • IDs
    MGI:95485
    NCBI Gene: 14104
  • Alliance
  • Transcription Start Sites
    15 TSS
  • Candidate for QTL
    8 QTL
Location &
Maps
more
  • Sequence Map
    Chr11:120696672-120715373 bp, - strand
    From Ensembl annotation of GRCm39
  • View this region in JBrowse
  • Genome Browsers
  • Genetic Map
    Chromosome 11, 84.56 cM
  • Mapping Data
    12 experiments
Strain
Comparison
more
  • SNPs within 2kb
    382 from dbSNP Build 142
  • Strain Annotations
    19
  • PCR
For selected strains:
Strain Gene Model ID Feature Type Coordinates Select Strains
C57BL/6J MGI_C57BL6J_95485
protein coding gene Chr11:120696672-120715992 (-)
129S1/SvImJ ENSMUSG00200051958
protein coding gene Chr11:118060187-118078888 (-)
A/J ENSMUSG00195024732
protein coding gene Chr11:117735259-117753961 (-)
AKR/J ENSMUSG00220024312
protein coding gene Chr11:117885648-117904349 (-)
BALB/cJ ENSMUSG00180045349
protein coding gene Chr11:118028136-118046838 (-)
C3H/HeJ ENSMUSG00175043085
protein coding gene Chr11:117985712-118004413 (-)
C57BL/6NJ ENSMUSG00215041592
protein coding gene Chr11:117555741-117574442 (-)
CAROLI/EiJ MGP_CAROLIEiJ_G0017547
protein coding gene Chr11:116706358-116725233 (-)
CAST/EiJ ENSTCUG00005030491
protein coding gene Chr11:117411608-117430292 (-)
CBA/J ENSMUSG00210050275
protein coding gene Chr11:117699746-117718447 (-)
DBA/2J ENSMUSG00185026162
protein coding gene Chr11:118012913-118031614 (-)
FVB/NJ ENSMUSG00205019446
protein coding gene Chr11:117860595-117879296 (-)
JF1/MsJ ENSUMUG00000020708
protein coding gene Chr11:118302458-118321162 (-)
LP/J ENSMUSG00230045885
protein coding gene Chr11:119079246-119097947 (-)
NOD/ShiLtJ ENSMUSG00190043456
protein coding gene Chr11:118084127-118102828 (-)
NZO/HlLtJ ENSMUSG00225051588
protein coding gene Chr11:121227985-121246686 (-)
PWK/PhJ ENSLUMG00010022408
protein coding gene Chr11:117821072-117839777 (-)
SPRET/EiJ ENSMSPG00010036293
protein coding gene Chr11:118391526-118410247 (-)
WSB/EiJ ENSIUOG00005038810
protein coding gene Chr11:117817750-117836450 (-)



Homology
more
  • Human Ortholog
    FASN, fatty acid synthase
  • Vertebrate Orthologs
    3
Vertebrate Orthology Source
Alliance of Genome Resources
  • Human Ortholog
    FASN, fatty acid synthase
  • Synonyms
    FAS, OA-519, SDR27X1
  • Links
    NCBI Gene ID: 2194
    UniProt: P49327

  • Chr Location
    17q25.3; chr17:82078338-82098294 (-)  GRCh38

Mutations,
Alleles, and
Phenotypes
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  • Phenotype Summary
    29 phenotypes from 3 alleles in 4 genetic backgrounds
    56 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.
Targeted mutation of this locus has implicated its product in embryogenesis as all homozygotes and most heterozygotes die prior to birth.
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
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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
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    Representative SequencesLengthStrain/SpeciesFlank
    genomic ENSMUSG00000025153 Ensembl Gene Model | MGI Sequence Detail 18702 C57BL/6J ±  kb
    transcript ENSMUST00000055655 Ensembl | MGI Sequence Detail 10050 Not Applicable  
    polypeptide ENSMUSP00000052872 Ensembl | MGI Sequence Detail 2504 Not Applicable  
    For the selected sequence
    Protein
    Information
    less
    Molecular
    Reagents
    less
    • All nucleic 35
      cDNA 27
      Primer pair 8
      Antibodies 4

      Microarray probesets 5
    Other
    Accession IDs
    less
    MGD-MRK-9712, MGI:2443287
    References
    more
    • Summaries
      All 201
      Developmental Gene Expression 48
      Gene Ontology 22
      Phenotypes 56
    • Earliest
      J:9167 Paulauskis JD, et al., Cloning and expression of mouse fatty acid synthase and other specific mRNAs. Developmental and hormonal regulation in 3T3-L1 cells. J Biol Chem. 1988 May 25;263(15):7049-54
    • Latest
      J:391329 Duan CH, et al., Loss of Echs1 in neural stem and progenitor cells impairs neurogenesis via ER stress activation and lipid metabolic reprogramming. Nat Commun. 2026 Jul 1;17(1)

    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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    last database update
    09/01/2026
    MGI 6.24
    The Jackson Laboratory