1N1M

Human Dipeptidyl Peptidase IV/CD26 in complex with an inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.211 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

Crystal structure of human dipeptidyl peptidase IV/CD26 in complex with a substrate analogue

Rasmussen, H.B.Branner, S.Wiberg, F.C.Wagtmann, N.R.

(2003) Nat Struct Biol 10: 19-25

  • DOI: https://doi.org/10.1038/nsb882
  • Primary Citation of Related Structures:  
    1N1M

  • PubMed Abstract: 

    Dipeptidyl peptidase IV (DPP-IV/CD26) is a multifunctional type II transmembrane serine peptidase. This enzyme contributes to the regulation of various physiological processes, including blood sugar homeostasis, by cleaving peptide hormones, chemokines and neuropeptides. We have determined the 2.5 A structure of the extracellular region of DPP-IV in complex with the inhibitor valine-pyrrolidide. The catalytic site is located in a large cavity formed between the alpha/beta-hydrolase domain and an eight-bladed beta-propeller domain. Both domains participate in inhibitor binding. The structure indicates how substrate specificity is achieved and reveals a new and unexpected opening to the active site.


  • Organizational Affiliation

    Protein Chemistry, Research and Development, Novo Nordisk A/S, Novo Allé, DK-2880 Bagsvaerd, Denmark. Hbrm@novonordisk.com


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dipeptidyl peptidase IV SOLUBLE FORM
A, B
728Homo sapiensMutation(s): 0 
EC: 3.4.14.5
UniProt & NIH Common Fund Data Resources
Find proteins for P27487 (Homo sapiens)
Explore P27487 
Go to UniProtKB:  P27487
PHAROS:  P27487
GTEx:  ENSG00000197635 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27487
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
C
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G19870TQ
GlyCosmos:  G19870TQ
GlyGen:  G19870TQ
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
D
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, G, H, J
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
F
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G52260VY
GlyCosmos:  G52260VY
GlyGen:  G52260VY
Entity ID: 6
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose
I
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G86851RC
GlyCosmos:  G86851RC
GlyGen:  G86851RC
Entity ID: 7
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
K, L
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Entity ID: 8
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
M
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G07375KG
GlyCosmos:  G07375KG
GlyGen:  G07375KG
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
N [auth A],
R [auth B],
S [auth B]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
HG
Query on HG

Download Ideal Coordinates CCD File 
O [auth A],
P [auth A],
T [auth B],
U [auth B]
MERCURY (II) ION
Hg
BQPIGGFYSBELGY-UHFFFAOYSA-N
A3M
Query on A3M

Download Ideal Coordinates CCD File 
Q [auth A],
V [auth B]
2-AMINO-3-METHYL-1-PYRROLIDIN-1-YL-BUTAN-1-ONE
C9 H18 N2 O
IHBAVXVTGLANPI-QMMMGPOBSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
A3M BindingDB:  1N1M Ki: min: 470, max: 2000 (nM) from 2 assay(s)
IC50: min: 548, max: 5400 (nM) from 4 assay(s)
PDBBind:  1N1M Ki: 2000 (nM) from 1 assay(s)
Binding MOAD:  1N1M Ki: 2000 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.211 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 119.234α = 90
b = 123.448β = 90
c = 131.315γ = 90
Software Package:
Software NamePurpose
MAR345data collection
SCALEPACKdata scaling
SOLVEphasing
CNXrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-12-27
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Data collection, Refinement description
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary