SPACI score report for 1vg4 in ASTRAL 1.69:

PDB Entry: 1vg4
SPACI score: 0.11
AEROSPACI score: 0.11 (mutant; see below)

Experiment type: XRAY
Resolution: 3.3
R-factor: 0.277
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -0.493
WCK2 WHAT_CHECK Ramachandran: -5.848
WCK3 WHAT_CHECK Chi angles: -2.624
WCK4 WHAT_CHECK Backbone: -4.239

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).