SPACI score report for 1erv in ASTRAL 1.59:

PDB Entry: 1erv
SPACI score: 0.55
AEROSPACI score: 0.55 (mutant; see below)

Experiment type: XRAY
Resolution: 1.65
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.531
WCK2 WHAT_CHECK Ramachandran: 0.575
WCK3 WHAT_CHECK Chi angles: 1.155
WCK4 WHAT_CHECK Backbone: 0.956

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"

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).