SPACI score report for 1atu in ASTRAL 2.08:

PDB Entry: 1atu
SPACI score: 0.17
AEROSPACI score: 0.17 (mutant; see below)

Experiment type: XRAY
Resolution: 2.7
R-factor: 0.195
PCK1 PROCHECK Ramachandran: 4
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -4.52
WCK2 WHAT_CHECK Ramachandran: -7.94
WCK3 WHAT_CHECK Chi angles: -6.582
WCK4 WHAT_CHECK Backbone: -6.076

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: "uncleaved; mutant; intact chain"

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).