SPACI score report for 2aq3 in ASTRAL 1.75:

PDB Entry: 2aq3
SPACI score: 0.26
AEROSPACI score: 0.26 (mutant; see below)

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.209
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.218
WCK2 WHAT_CHECK Ramachandran: -4.85
WCK3 WHAT_CHECK Chi angles: -5.592
WCK4 WHAT_CHECK Backbone: -2.63

The AEROSPACI score for this entry is lower than the SPACI score because human-curated comments on the entry in SCOP contain the phrase mutant. The full comment is: "mutant; automatically matched to d1bxta1; automatically matched to d1bxta2; automatically matched to 2AQ3 A:2-117; automated match to d3bvza1; automated match to d3bvga2; automated match to d2aq3a1"

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).