SPACI score report for 1j1p in ASTRAL 1.75:

PDB Entry: 1j1p
SPACI score: 0.61
AEROSPACI score: 0.61 (mutant; see below)

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.191
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.483
WCK2 WHAT_CHECK Ramachandran: -0.811
WCK3 WHAT_CHECK Chi angles: -0.277
WCK4 WHAT_CHECK Backbone: 0.345

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: "Fv fragment only; mutant; part of Fv HyHEL-10"

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).