1GKA

The molecular basis of the coloration mechanism in lobster shell. beta-crustacyanin at 3.2 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.23 Å
  • R-Value Free: 0.252
  • R-Value Work: 0.213

Literature

Macromolecules
Sequence Display for 1GKA

Classification: LIPOCALIN

Total Structure Weight: 41971.31

Macromolecule Entities
Molecule Chains Length Organism Details
CRUSTACYANIN A1 SUBUNIT A 180 Homarus gammarus Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG
CRUSTACYANIN A2 SUBUNIT B 174 Homarus gammarus Gene Name(s):
Metabolic Pathways
Maps:       
Reactions:
ESCHER  BiGG

Small Molecules
Ligands 4 Unique
ID Chains Name / Formula / InChI Key 2D Diagram 3D Interactions
AXT
Query on AXT

A, B ASTAXANTHIN
3,3'-DIHYDROXY-BETA,BETA-CAROTENE-4,4'-DIONE (Synonym)
C40 H52 O4
MQZIGYBFDRPAKN-UWFIBFSHSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
EPE
Query on EPE

B 4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES (Synonym)
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
D12
Query on D12

A DODECANE
C12 H26
SNRUBQQJIBEYMU-UHFFFAOYSA-N
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)
TRS
Query on TRS

B 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
TRIS BUFFER (Synonym)
C4 H12 N O3
LENZDBCJOHFCAS-UHFFFAOYSA-O
Ligand Explorer NGL
 
Binding Pocket (JSmol)
 
Electron Density (JSmol)

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.23 Å
  • R-Value Free: 0.252
  • R-Value Work: 0.213
  • Space Group: P 63 2 2

Unit Cell:

Length (Å) Angle (°)
a = 155.47 α = 90.00
b = 155.47 β = 90.00
c = 168.50 γ = 120.00

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History

Deposition Data

  • Deposited Date: 2001-08-10
  • Released Date: 2002-08-08
  • Deposition author(s): Cianci, M., Rizkallah, P.J., Olczak, A., Raftery, J., Chayen, N.E., Zagalsky, P.F., Helliwell, J.R.

Revision History

  • 2011-05-08
    Type: Version format compliance
  • 2011-07-13
    Type: Version format compliance