SPACI score report for 2exy in ASTRAL 2.07:

PDB Entry: 2exy
SPACI score: 0.06
AEROSPACI score: 0.06 (mutant; see below)

Experiment type: XRAY
Resolution: 3.1
R-factor: 0.328
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.302
WCK2 WHAT_CHECK Ramachandran: -6.131
WCK3 WHAT_CHECK Chi angles: -4.646
WCK4 WHAT_CHECK Backbone: -0.708

The AEROSPACI score for this entry is lower than the SPACI score because human-curated comments on the entry in SCOPe contain the phrase mutant. The full comment is: "mutant; automatically matched to d1dqdl1; automatically matched to d1dqdl2; automatically matched to d1otua_; automated match to d1ikfl1; automated match to d1ikfl2; automated match to d1kpla_; automated match to d6shgh_"

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).