SPACI score report for 2g4d in ASTRAL 2.04:

PDB Entry: 2g4d
SPACI score: 0.22
AEROSPACI score: 0.22 (mutant; see below)

Experiment type: XRAY
Resolution: 2.8
R-factor: 0.248
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.121
WCK2 WHAT_CHECK Ramachandran: -2.692
WCK3 WHAT_CHECK Chi angles: -2.971
WCK4 WHAT_CHECK Backbone: 0.662

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 d1tgzb_; automatically matched to 2G4D A:440-643; automated match to d1y8rc_; automated match to d2g4da1"

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).