SPACI score report for 1h4u in ASTRAL 2.01:

PDB Entry: 1h4u
SPACI score: 0.36
AEROSPACI score: -1.64 (mutant; see below)

Experiment type: XRAY
Resolution: 2.2
R-factor: 0.241
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.816
WCK2 WHAT_CHECK Ramachandran: -0.972
WCK3 WHAT_CHECK Chi angles: -0.74
WCK4 WHAT_CHECK Backbone: 0.71

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; partly disordered"

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).