1W1I

Crystal structure of dipeptidyl peptidase IV (DPPIV or CD26) in complex with adenosine deaminase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.03 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 

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Literature

Crystal structure of CD26/dipeptidyl-peptidase IV in complex with adenosine deaminase reveals a highly amphiphilic interface.

Weihofen, W.A.Liu, J.Reutter, W.Saenger, W.Fan, H.

(2004) J Biol Chem 279: 43330-43335

  • DOI: 10.1074/jbc.M405001200
  • Primary Citation of Related Structures:  
    1W1I

  • PubMed Abstract: 
  • Dipeptidyl-peptidase IV (DPPIV or CD26) is a homodimeric type II membrane glycoprotein in which the two monomers are subdivided into a beta-propeller domain and an alpha/beta-hydrolase domain. As dipeptidase, DPPIV modulates the activity of various biologically important peptides and, in addition, DPPIV acts as a receptor for adenosine deaminase (ADA), thereby mediating co-stimulatory signals in T-lymphocytes ...

    Dipeptidyl-peptidase IV (DPPIV or CD26) is a homodimeric type II membrane glycoprotein in which the two monomers are subdivided into a beta-propeller domain and an alpha/beta-hydrolase domain. As dipeptidase, DPPIV modulates the activity of various biologically important peptides and, in addition, DPPIV acts as a receptor for adenosine deaminase (ADA), thereby mediating co-stimulatory signals in T-lymphocytes. The 3.0-A resolution crystal structure of the complex formed between human DPPIV and bovine ADA presented here shows that each beta-propeller domain of the DPPIV dimer binds one ADA. At the binding interface, two hydrophobic loops protruding from the beta-propeller domain of DPPIV interact with two hydrophilic and heavily charged alpha-helices of ADA, giving rise to the highest percentage of charged residues involved in a protein-protein contact reported thus far. Additionally, four glycosides linked to Asn229 of DPPIV bind to ADA. In the crystal structure of porcine DPPIV, the observed tetramer formation was suggested to mediate epithelial and lymphocyte cell-cell adhesion. ADA binding to DPPIV could regulate this adhesion, as it would abolish tetramerization.


    Organizational Affiliation

    Institut für Chemie/Kristallographie, Freie Universität Berlin, Takustrasse 6, D-14195 Berlin, Germany.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DIPEPTIDYL PEPTIDASE IVA, B, C, D728Homo sapiensMutation(s): 0 
Gene Names: DPP4ADCP2CD26
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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP27487
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ADENOSINE DEAMINASEE, F, G, H357Bos taurusMutation(s): 3 
Gene Names: ADA
EC: 3.5.4.4
UniProt
Find proteins for P56658 (Bos taurus)
Explore P56658 
Go to UniProtKB:  P56658
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP56658
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranoseI, Q 3N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Entity ID: 4
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
J, K, N, P, R, S, U, W, Y
J, K, N, P, R, S, U, W, Y
2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 5
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseL, O, T, X 4N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G81315DD
GlyCosmos:  G81315DD
GlyGen:  G81315DD
Entity ID: 6
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranoseM, V 2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G86851RC
GlyCosmos:  G86851RC
GlyGen:  G86851RC
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
AA [auth A],
BA [auth A],
CA [auth A],
DA [auth B],
EA [auth B],
AA [auth A],
BA [auth A],
CA [auth A],
DA [auth B],
EA [auth B],
FA [auth B],
GA [auth B],
HA [auth C],
IA [auth C],
JA [auth C],
KA [auth D],
LA [auth D],
MA [auth D],
NA [auth D],
Z [auth A]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
ZN
Query on ZN

Download Ideal Coordinates CCD File 
OA [auth E],
PA [auth F],
QA [auth G],
RA [auth H]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.03 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.224 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 158.065α = 90
b = 168.504β = 100.54
c = 236.842γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-02
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2018-07-25
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Source and taxonomy, Structure summary
  • Version 3.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary