SPACI score report for 1ce0 in ASTRAL 1.71:

PDB Entry: 1ce0
SPACI score: 0.33
AEROSPACI score: -1.67 (mutant; see below)

Experiment type: XRAY
Resolution: 2.4
R-factor: 0.221
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 6.648
WCK2 WHAT_CHECK Ramachandran: 0.697
WCK3 WHAT_CHECK Chi angles: -4.024
WCK4 WHAT_CHECK Backbone: 1.284

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: "HIV-1 gp41 trimer-based mutant"

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).