SPACI score report for 4gpd in ASTRAL 1.73:

WARNING! The SPACI score for this entry is not valid. This is not an X-ray structure, so the resolution and R-factor listed may be arbitrary and not valid.

PDB Entry: 4gpd
SPACI score: 0.08 (not valid)
AEROSPACI score: 0.08 (not valid)

Experiment type: -
Resolution: 2.8
R-factor: 0.218
PCK1 PROCHECK Ramachandran: 4
PCK2 PROCHECK Chi-1 angle: 4
PCK3 PROCHECK H-bonds: 4
WCK1 WHAT_CHECK Packing: -1.904
WCK2 WHAT_CHECK Ramachandran: -7.368
WCK3 WHAT_CHECK Chi angles: -5.923
WCK4 WHAT_CHECK Backbone: -17.394

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).