SPACI score report for 1y6m in ASTRAL 2.07:

PDB Entry: 1y6m
SPACI score: 0.18
AEROSPACI score: 0.18 (mutant; see below)

Experiment type: XRAY
Resolution: 2.8
R-factor: 0.261
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.425
WCK2 WHAT_CHECK Ramachandran: -5.917
WCK3 WHAT_CHECK Chi angles: -4.103
WCK4 WHAT_CHECK Backbone: -1.215

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 d1j7vr1; automatically matched to d1lqsr2; automatically matched to d1vlk__; automated match to d1lqsr1; automated match to d1lqsr2; automated match to d1vlk__"

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).