1BEN

INSULIN COMPLEXED WITH 4-HYDROXYBENZAMIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A novel complex of a phenolic derivative with insulin: structural features related to the T-->R transition.

Smith, G.D.Ciszak, E.Pangborn, W.

(1996) Protein Sci. 5: 1502-1511

  • DOI: 10.1002/pro.5560050806

  • PubMed Abstract: 
  • The structure of a symmetric T3R3f insulin hexamer, complexed with 4-hydroxybenzamide, has been determined using X-ray crystallographic techniques. Data were measured from six crystals grown in microgravity to a resolution of 1.4 A and the structure ...

    The structure of a symmetric T3R3f insulin hexamer, complexed with 4-hydroxybenzamide, has been determined using X-ray crystallographic techniques. Data were measured from six crystals grown in microgravity to a resolution of 1.4 A and the structure has been refined including the contributions from hydrogen atoms. The crystals are isomorphous with T3R3f complexes of phenolic derivatives as well as with uncomplexed forms. Unlike the structures of complexes with phenol, m-cresol, resorcinol, 4'-hydroxyacetanilide, and methylparaben, which bind one phenolic derivative molecule per R- or Rf-state monomer, two molecules of 4-hydroxybenzamide are bound by each Rf-state monomer. The presence of the second guest molecule results in an extensive hydrogen bonding network, mediated by water molecules, between the T- and Rf-state trimers and adds stability to the formation of the hexamer. The only access to these second sites is through three symmetry-related, narrow channels that originate on the surface of the T-state trimer. Although the conformation of the backbone atoms of the monomers is nearly identical to that of other T3R3f hexamers, significant changes are observed in the conformations of side chains in the vicinity of the second binding site. The side chain of the T-state A11 Cys residue, which forms a disulfide bond to A6 Cys in the same monomer, is observed in two discrete conformations; two discrete conformations are also present for the entire A8 Thr residue in the Rf-state monomer. A procedure is also described for an alternate method of interframe scaling and merging intensity data from an image plate detector.


    Related Citations: 
    • Role of C-Terminal B-Chain Residues in Insulin Assembly: The Structure of Hexameric Lysb28Prob29-Human Insulin
      Ciszak, E.,Beals, J.M.,Frank, B.H.,Baker, J.C.,Carter, N.D.,Smith, G.D.
      (1995) Structure 3: 615
    • The Structure of a Rhombohedral R6 Insulin/Phenol Complex
      Smith, G.D.,Dodson, G.G.
      (1992) Proteins 14: 401
    • Crystallographic Evidence for Dual Coordination Around Zinc in the T3R3 Human Insulin Hexamer
      Ciszak, E.,Smith, G.D.
      (1994) Biochemistry 33: 1512
    • The Structure of a Complex of Hexameric Insulin and 4'-Hydroxyacetanilide
      Smith, G.D.,Ciszak, E.
      (1994) Proc.Natl.Acad.Sci.USA 91: 8851
    • Structural Stability in the 4-Zinc Human Insulin Hexamer
      Smith, G.D.,Swenson, D.C.,Dodson, E.J.,Dodson, G.G.,Reynolds, C.D.
      (1984) Proc.Natl.Acad.Sci.USA 81: 7093
    • The Structure of 2Zn Pig Insulin Crystals at 1.5A Resolution
      Baker, E.N.,Blundell, T.L.,Cutfield, J.F.,Cutfield, S.M.,Dodson, E.J.,Dodson, G.G.,Hodgkin, D.C.,Hubbard, R.E.,Isaacs, N.W.,Reynolds, C.D.,Sakabe, K.,Sakabe, N.,Vijayan, N.M.
      (1988) Philos.Trans.R.Soc.London,Ser.B 319: 369


    Organizational Affiliation

    Hauptman-Woodward Medical Research Institute, Inc., Buffalo, New York 14203, USA. smith@hwi.buffalo.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HUMAN INSULIN
A, C
21Homo sapiensGene Names: INS
Find proteins for P01308 (Homo sapiens)
Go to Gene View: INS
Go to UniProtKB:  P01308
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HUMAN INSULIN
B, D
30Homo sapiensGene Names: INS
Find proteins for P01308 (Homo sapiens)
Go to Gene View: INS
Go to UniProtKB:  P01308
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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B, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

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Download CCD File 
D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
HBD
Query on HBD

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C, D
4-HYDROXYBENZAMIDE
C7 H7 N O2
QXSAKPUBHTZHKW-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 80.720α = 90.00
b = 80.720β = 90.00
c = 37.630γ = 120.00
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-07-11
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance