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Variations on the GFP chromophore scaffold: A fragmented 5-membered heterocycle revealed in the 2.1A crystal structure of a non-fluorescent chromoprotein

X-ray diffraction
2.1Å resolution
PDB entry 1xqm coloured by chain, front view.
PDB entry 1xqm coloured by chain, side view.
PDB entry 1xqm coloured by chain, top view.
Source organism: Anemonia sulcata
Assembly composition:
homo tetramer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1 (preferred)
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Assembly Name: GFP-like non-fluorescent chromoprotein FP595 chain 1
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Multimeric state: homo tetramer
Accessible surface area: 29903.59 Å2
Buried surface area: 11023.21 Å2
Dissociation area: 2,046.78 Å2
Dissociation energy (ΔGdiss): 16.89 kcal/mol
Dissociation entropy (TΔSdiss): 14.42 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-190439

Macromolecules

GFP-like non-fluorescent chromoprotein FP595
Chain: A
Length: 230 amino acids
Theoretical weight: 25.84 KDa
Source organism: Anemonia sulcata
Expression system: Not provided
UniProt:
  • Canonical: Q9GZ28 (Residues: 1-232; Coverage: 100%)
Pfam: Green fluorescent protein
InterPro: Green fluorescent protein-related
CATH: Green fluorescent protein
SCOP: Fluorescent proteins
GFP-like non-fluorescent chromoprotein FP595 in PDB entry 1xqm, assembly 1, front view.
GFP-like non-fluorescent chromoprotein FP595 in PDB entry 1xqm, assembly 1, side view.
GFP-like non-fluorescent chromoprotein FP595 in PDB entry 1xqm, assembly 1, top view.
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