PFKL
ATP-dependent 6-phosphofructokinase, liver type
Also known as: PFKAL_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P17858
- Gene
- PFKL
- Ensembl
- ENSG00000141959
- Chromosome
- 21
- Canonical length
- 780 aa
- Protein class
- Enzymes, Metabolic proteins, Plasma proteins, Predicted intracellular proteins
- Subcellular location
- Nucleoli,Mitochondria
OverviewNCBI Gene
This gene encodes the liver (L) subunit of an enzyme that catalyzes the conversion of D-fructose 6-phosphate to D-fructose 1,6-bisphosphate, which is a key step in glucose metabolism (glycolysis). This enzyme is a tetramer that may be composed of different subunits encoded by distinct genes in different tissues. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2014]
Canonical amino-acid sequenceUniProt
780 residues, UniProt reviewed canonical sequence.
>P17858|PFKL
1 MAAVDLEKLR ASGAGKAIGV LTSGGDAQGM NAAVRAVTRM GIYVGAKVFL IYEGYEGLVE
61 GGENIKQANW LSVSNIIQLG GTIIGSARCK AFTTREGRRA AAYNLVQHGI TNLCVIGGDG
121 SLTGANIFRS EWGSLLEELV AEGKISETTA RTYSHLNIAG LVGSIDNDFC GTDMTIGTDS
181 ALHRIMEVID AITTTAQSHQ RTFVLEVMGR HCGYLALVSA LASGADWLFI PEAPPEDGWE
241 NFMCERLGET RSRGSRLNII IIAEGAIDRN GKPISSSYVK DLVVQRLGFD TRVTVLGHVQ
301 RGGTPSAFDR ILSSKMGMEA VMALLEATPD TPACVVTLSG NQSVRLPLME CVQMTKEVQK
361 AMDDKRFDEA TQLRGGSFEN NWNIYKLLAH QKPPKEKSNF SLAILNVGAP AAGMNAAVRS
421 AVRTGISHGH TVYVVHDGFE GLAKGQVQEV GWHDVAGWLG RGGSMLGTKR TLPKGQLESI
481 VENIRIYGIH ALLVVGGFEA YEGVLQLVEA RGRYEELCIV MCVIPATISN NVPGTDFSLG
541 SDTAVNAAME SCDRIKQSAS GTKRRVFIVE TMGGYCGYLA TVTGIAVGAD AAYVFEDPFN
601 IHDLKVNVEH MTEKMKTDIQ RGLVLRNEKC HDYYTTEFLY NLYSSEGKGV FDCRTNVLGH
661 LQQGGAPTPF DRNYGTKLGV KAMLWLSEKL REVYRKGRVF ANAPDSACVI GLKKKAVAFS
721 PVTELKKDTD FEHRMPREQW WLSLRLMLKM LAQYRISMAA YVSGELEHVT RRTLSMDKGFLocalizationUniProt · AlphaFold · HPA
Whether an antibody against PFKL can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.2
- Highest tissue expression
- 94 nTPM
Expression across tissuesHPA
Tissue
- duodenum: 94 nTPM
- kidney: 89 nTPM
- small intestine: 87 nTPM
- spinal cord: 75 nTPM
- esophagus: 75 nTPM
- colon: 74 nTPM
Single-cell type
- enterocytes: 317 nCPM
- esophageal apical cells: 293 nCPM
- colonocytes: 235 nCPM
- extravillous trophoblasts: 229 nCPM
- syncytiotrophoblasts: 189 nCPM
- enteric transient amplifying cells: 185 nCPM
Immune cell
- non-classical monocyte: 127 nTPM
- intermediate monocyte: 119 nTPM
- total PBMC: 84 nTPM
- myeloid DC: 84 nTPM
- T-reg: 79 nTPM
- classical monocyte: 72 nTPM
Brain region
- white matter: 131 nTPM
- medulla oblongata: 129 nTPM
- thalamus: 126 nTPM
- spinal cord: 116 nTPM
- midbrain: 111 nTPM
- cerebellum: 104 nTPM
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 1.03
- gnomAD pLI
- 0
- gnomAD missense Z
- 1.68
- DepMap mean gene effect
- 0.05
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- canonical glycolysis
- fructose 1,6-bisphosphate metabolic process
- fructose 6-phosphate metabolic process
- glycolytic process
- negative regulation of insulin secretion
- response to glucose
Molecular functions
- 6-phosphofructokinase activity
- ATP binding
- fructose binding
- fructose-6-phosphate binding
- identical protein binding
- kinase binding
- metal ion binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of PFKL in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads PFKL as an antibody target. Whether an autoantibody or antibody against PFKL could matter depends on whether native PFKL is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
PFKL is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label PFKL as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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