SPACI score report for 1xgt in ASTRAL 1.73:

PDB Entry: 1xgt
SPACI score: 0.36
AEROSPACI score: 0.36 (mutant; see below)

Experiment type: XRAY
Resolution: 2.1
R-factor: 0.252
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.473
WCK2 WHAT_CHECK Ramachandran: -0.689
WCK3 WHAT_CHECK Chi angles: -1.381
WCK4 WHAT_CHECK Backbone: -4.741

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 d1lsg_1; automated match to d1dqdl2; automated match to d1dqdl1; automated match to d3lzta_"

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).