SPACI score report for 1uj3 in ASTRAL 1.73:

PDB Entry: 1uj3
SPACI score: 0.41
AEROSPACI score: -1.59 (chimer; see below)

Experiment type: XRAY
Resolution: 2.1
R-factor: 0.196
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.511
WCK2 WHAT_CHECK Ramachandran: -0.731
WCK3 WHAT_CHECK Chi angles: -1.089
WCK4 WHAT_CHECK Backbone: -6.348

The AEROSPACI score for this entry is lower than the SPACI score because human-curated comments on the entry in SCOP contain the phrase chimer. The full comment is: "MQ NA P01834 # artificial chimera; MQ NA P01857 # artificial chimera"

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).