IDE
Insulin-degrading enzyme
Also known as: IDE_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P14735
- Gene
- IDE
- Ensembl
- ENSG00000119912
- Chromosome
- 10
- Canonical length
- 1019 aa
- Protein class
- Enzymes, FDA approved drug targets, Plasma proteins, Predicted intracellular proteins, Predicted secreted proteins
- Secretome location
- Secreted in other tissues
- Quaternary structure
- Homotetramer
OverviewNCBI Gene
This gene encodes a zinc metallopeptidase that degrades intracellular insulin, and thereby terminates insulins activity, as well as participating in intercellular peptide signalling by degrading diverse peptides such as glucagon, amylin, bradykinin, and kallidin. The preferential affinity of this enzyme for insulin results in insulin-mediated inhibition of the degradation of other peptides such as beta-amyloid. Deficiencies in this protein's function are associated with Alzheimer's disease and type 2 diabetes mellitus but mutations in this gene have not been shown to be causitive for these diseases. This protein localizes primarily to the cytoplasm but in some cell types localizes to the extracellular space, cell membrane, peroxisome, and mitochondrion. Alternative splicing results in multiple transcript variants encoding distinct isoforms. Additional transcript variants have been described but have not been experimentally verified.[provided by RefSeq, Sep 2009]
Canonical amino-acid sequenceUniProt
1019 residues, UniProt reviewed canonical sequence.
>P14735|IDE
1 MRYRLAWLLH PALPSTFRSV LGARLPPPER LCGFQKKTYS KMNNPAIKRI GNHITKSPED
61 KREYRGLELA NGIKVLLISD PTTDKSSAAL DVHIGSLSDP PNIAGLSHFC EHMLFLGTKK
121 YPKENEYSQF LSEHAGSSNA FTSGEHTNYY FDVSHEHLEG ALDRFAQFFL CPLFDESCKD
181 REVNAVDSEH EKNVMNDAWR LFQLEKATGN PKHPFSKFGT GNKYTLETRP NQEGIDVRQE
241 LLKFHSAYYS SNLMAVCVLG RESLDDLTNL VVKLFSEVEN KNVPLPEFPE HPFQEEHLKQ
301 LYKIVPIKDI RNLYVTFPIP DLQKYYKSNP GHYLGHLIGH EGPGSLLSEL KSKGWVNTLV
361 GGQKEGARGF MFFIINVDLT EEGLLHVEDI ILHMFQYIQK LRAEGPQEWV FQECKDLNAV
421 AFRFKDKERP RGYTSKIAGI LHYYPLEEVL TAEYLLEEFR PDLIEMVLDK LRPENVRVAI
481 VSKSFEGKTD RTEEWYGTQY KQEAIPDEVI KKWQNADLNG KFKLPTKNEF IPTNFEILPL
541 EKEATPYPAL IKDTAMSKLW FKQDDKFFLP KACLNFEFFS PFAYVDPLHC NMAYLYLELL
601 KDSLNEYAYA AELAGLSYDL QNTIYGMYLS VKGYNDKQPI LLKKIIEKMA TFEIDEKRFE
661 IIKEAYMRSL NNFRAEQPHQ HAMYYLRLLM TEVAWTKDEL KEALDDVTLP RLKAFIPQLL
721 SRLHIEALLH GNITKQAALG IMQMVEDTLI EHAHTKPLLP SQLVRYREVQ LPDRGWFVYQ
781 QRNEVHNNCG IEIYYQTDMQ STSENMFLEL FCQIISEPCF NTLRTKEQLG YIVFSGPRRA
841 NGIQGLRFII QSEKPPHYLE SRVEAFLITM EKSIEDMTEE AFQKHIQALA IRRLDKPKKL
901 SAECAKYWGE IISQQYNFDR DNTEVAYLKT LTKEDIIKFY KEMLAVDAPR RHKVSVHVLA
961 REMDSCPVVG EFPCQNDINL SQAPALPQPE VIQNMTEFKR GLPLFPLVKP HINFMAAKLLocalizationUniProt · AlphaFold · HPA
Whether an antibody against IDE 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
- Cell surface
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.22
- Highest tissue expression
- 31 nTPM
Expression across tissuesHPA
Tissue
- skin: 31 nTPM
- skeletal muscle: 26 nTPM
- testis: 24 nTPM
- heart muscle: 10 nTPM
- retina: 9.6 nTPM
- pancreas: 9.5 nTPM
Single-cell type
- cone photoreceptor cells: 149 nCPM
- rod photoreceptor cells: 144 nCPM
- retinal ganglion cells: 143 nCPM
- myonuclei: 141 nCPM
- cardiomyocytes: 124 nCPM
- prostatic glandular cells: 121 nCPM
Immune cell
- non-classical monocyte: 6 nTPM
- myeloid DC: 4.6 nTPM
- intermediate monocyte: 4.2 nTPM
- T-reg: 4 nTPM
- NK-cell: 3.7 nTPM
- classical monocyte: 3.5 nTPM
Brain region
- choroid plexus: 7.2 nTPM
- pons: 2.8 nTPM
- medulla oblongata: 2.7 nTPM
- white matter: 2.6 nTPM
- cerebellum: 2.5 nTPM
- hypothalamus: 2.5 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)
- 0.41
- gnomAD pLI
- 0.01
- gnomAD missense Z
- 2.08
- DepMap mean gene effect
- -0.09
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- amyloid-beta clearance
- amyloid-beta clearance by cellular catabolic process
- amyloid-beta metabolic process
- antigen processing and presentation of endogenous peptide antigen via MHC class I
- bradykinin catabolic process
- hormone catabolic process
- insulin catabolic process
- insulin metabolic process
- insulin receptor signaling pathway
- negative regulation of proteolysis
- peptide catabolic process
- positive regulation of protein binding
- positive regulation of protein catabolic process
- protein catabolic process
- proteolysis
- proteolysis involved in protein catabolic process
- regulation of aerobic respiration
- ubiquitin recycling
Molecular functions
- amyloid-beta binding
- ATP binding
- ATP hydrolysis activity
- endopeptidase activity
- identical protein binding
- insulin binding
- metalloendopeptidase activity
- peptide binding
- protein homodimerization activity
- protein-containing complex binding
- virus receptor activity
- zinc ion binding
- beta-endorphin binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Peptidase M16, zinc-binding site
- Peptidase M16, C-terminal
- Metalloenzyme, LuxS/M16 peptidase-like
- Peptidase M16, N-terminal
- Peptidase M16, middle/third domain
- Peptidase M16
- Insulinase (Peptidase family M16)
- Peptidase M16 inactive domain
- Middle or third domain of peptidase_M16
- Coenzyme PQQ synthesis protein F-like, C-terminal lobe, domain 4
- PQQ synthase PqqF-like, C-terminal lobe domain 4
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of IDE 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 IDE as an antibody target. Whether an autoantibody or antibody against IDE could matter depends on whether native IDE is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
IDE is annotated at the cell surface, where native IDE is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label IDE as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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