1GKA	Lipocalin	date	Aug 10, 2001
title	The Molecular Basis Of The Coloration Mechanism In Lobster S Beta-Crustacyanin At 3.2 A Resolution
authors	M.Cianci, P.J.Rizkallah, A.Olczak, J.Raftery, N.E.Chayen, P.F.Zag J.R.Helliwell
compound		source
Molecule: Crustacyanin A1 Subunit Chain: A Synonym: Beta Crustacyanin Subunit		Organism_scientific: Homarus Gammarus Organism_common: European Lobster Organism_taxid: 6707 Tissue: Carapace
Molecule: Crustacyanin A2 Subunit Chain: B		Organism_scientific: Homarus Gammarus Organism_common: European Lobster Organism_taxid: 6707 Tissue: Carapace
symmetry	Space Group: P 63 2 2	R_factor 0.213 R_Free 0.252
crystal cell	length a length b length c angle alpha angle beta angle gamma 155.466 155.466 168.504 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	3.23 Å
ligand	AXT, D12, EPE, TRS	enzyme
Gene Ontology	Chain Function Process Component A B
Primary reference	The molecular basis of the coloration mechanism in lobster shell: beta-crustacyanin at 3.2-A resolution., Cianci M, Rizkallah PJ, Olczak A, Raftery J, Chayen NE, Zagalsky PF, Helliwell JR, Proc Natl Acad Sci U S A 2002 Jul 23;99(15):9795-800. PMID:12119396

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (1gka.pdb1.gz) 61 Kb LPC: Ligand-Protein Contacts for 1GKA CSU: Contacts of Structural Units for 1GKA Likely Quarternary Molecular Structure file(s) for 1GKA Structure Factors (196 Kb) Retrieve 1GKA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1GKA from S2C, [Save to disk] Re-refined 1gka structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1GKA in 3D

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Visual 3D analysis of 1GKA

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1GKA, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1gkaa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1gkab_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1gka_A] [1gka] [1gka_B] SWISS-PROT database: [P58989] [P80007] Domain organization of [CRA1_HOMGA] [CRA2_HOMGA] by SWISSPFAM

Other resources with information on 1GKA

Community annotation for 1GKA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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