SPACI score report for 1x6l in ASTRAL 1.75:

PDB Entry: 1x6l
SPACI score: 0.58
AEROSPACI score: 0.58 (mutant; see below)

Experiment type: XRAY
Resolution: 1.9
R-factor: 0.217
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.254
WCK2 WHAT_CHECK Ramachandran: -1.225
WCK3 WHAT_CHECK Chi angles: 0.778
WCK4 WHAT_CHECK Backbone: -0.388

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 d1ctn_1; automatically matched to d1ctn_2; automatically matched to d1ctn_3; automated match to d1rd6a1; automated match to d1rd6a2; automated match to d1rd6a3"

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).