SPACI score report for 2q4p in ASTRAL 2.08:

PDB Entry: 2q4p
SPACI score: 0.33
AEROSPACI score: 0.33

Experiment type: XRAY
Resolution: 2.32
R-factor: 0.138
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 4
WCK1 WHAT_CHECK Packing: -3.256
WCK2 WHAT_CHECK Ramachandran: -6.056
WCK3 WHAT_CHECK Chi angles: -5
WCK4 WHAT_CHECK Backbone: -2.65

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).