Function and Biology

Crystal Structure Analysis of Fab-Bound Human Insulin Degrading Enzyme (IDE) in Complex with Amyloid-Beta (1-40)

Source organism: Homo sapiens
Biochemical function: metal ion binding
Biological process: regulation of aerobic respiration
Cellular component: membrane

EC 3.4.24.56: Insulysin

Reaction catalysed:
Degradation of insulin, glucagon and other polypeptides. No action on proteins.
Alternative Name(s):
  • IDE
  • Insulin protease
  • Insulin proteinase
  • Insulin-degrading enzyme
  • Insulin-degrading neutral proteinase
  • Insulin-glucagon protease
  • Insulin-specific protease
  • Insulinase
  • Metalloinsulinase

Sequence families

Pfam Protein families (Pfam)
PF05193
Domain description: Peptidase M16 inactive domain
Occurring in:
  1. Insulin-degrading enzyme
The deposited structure of PDB entry 4m1c contains 4 copies of Pfam domain PF05193 (Peptidase M16 inactive domain) in Insulin-degrading enzyme. Showing 2 copies in chain A.

PF03494
Domain description: Beta-amyloid peptide (beta-APP)
Occurring in:
  1. Amyloid-beta protein 40
The deposited structure of PDB entry 4m1c contains 2 copies of Pfam domain PF03494 (Beta-amyloid peptide (beta-APP)) in Amyloid-beta protein 40. Showing 1 copy in chain G.

PF16187
Domain description: Middle or third domain of peptidase_M16
Occurring in:
  1. Insulin-degrading enzyme
The deposited structure of PDB entry 4m1c contains 2 copies of Pfam domain PF16187 (Middle or third domain of peptidase_M16) in Insulin-degrading enzyme. Showing 1 copy in chain A.

PF00675
Domain description: Insulinase (Peptidase family M16)
Occurring in:
  1. Insulin-degrading enzyme
The deposited structure of PDB entry 4m1c contains 2 copies of Pfam domain PF00675 (Insulinase (Peptidase family M16)) in Insulin-degrading enzyme. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR013803
Domain description: Amyloidogenic glycoprotein, amyloid-beta peptide
Occurring in:
  1. Amyloid-beta protein 40
IPR003597
Domain description: Immunoglobulin C1-set
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR013106
Domain description: Immunoglobulin V-set domain
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR036179
Domain description: Immunoglobulin-like domain superfamily
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR007110
Domain description: Immunoglobulin-like domain
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR013783
Domain description: Immunoglobulin-like fold
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR011249
Domain description: Metalloenzyme, LuxS/M16 peptidase-like
Occurring in:
  1. Insulin-degrading enzyme
IPR003599
Domain description: Immunoglobulin subtype
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR003006
Domain description: Immunoglobulin/major histocompatibility complex, conserved site
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
IPR007863
Domain description: Peptidase M16, C-terminal
Occurring in:
  1. Insulin-degrading enzyme
IPR037071
Domain description: Amyloidogenic glycoprotein, amyloid-beta peptide superfamily
Occurring in:
  1. Amyloid-beta protein 40
IPR003598
Domain description: Immunoglobulin subtype 2
Occurring in:
  1. Fab-bound IDE, light chain
IPR032632
Domain description: Peptidase M16, middle/third domain
Occurring in:
  1. Insulin-degrading enzyme
IPR011765
Domain description: Peptidase M16, N-terminal
Occurring in:
  1. Insulin-degrading enzyme

Structure domains

CATH CATH domains
2.60.40.10
Class: Mainly Beta
Architecture: Sandwich
Topology: Immunoglobulin-like
Homology: Immunoglobulins
Occurring in:
  1. Fab-bound IDE, heavy chain
  2. Fab-bound IDE, light chain
The deposited structure of PDB entry 4m1c contains 4 copies of CATH domain 2.60.40.10 (Immunoglobulin-like) in Fab-bound IDE, heavy chain. Showing 2 copies in chain E.
The deposited structure of PDB entry 4m1c contains 4 copies of CATH domain 2.60.40.10 (Immunoglobulin-like) in Fab-bound IDE, light chain. Showing 2 copies in chain F.
3.30.830.10
Class: Alpha Beta
Architecture: 2-Layer Sandwich
Topology: Cytochrome Bc1 Complex; Chain A, domain 1
Homology: Metalloenzyme, LuxS/M16 peptidase-like
Occurring in:
  1. Insulin-degrading enzyme
The deposited structure of PDB entry 4m1c contains 8 copies of CATH domain 3.30.830.10 (Cytochrome Bc1 Complex; Chain A, domain 1) in Insulin-degrading enzyme. Showing 4 copies in chain A.