SPACI score report for 1a64 in ASTRAL 1.59:

PDB Entry: 1a64
SPACI score: 0.4
AEROSPACI score: -1.6 (mutant; see below)

Experiment type: XRAY
Resolution: 2
R-factor: 0.2306
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.52
WCK2 WHAT_CHECK Ramachandran: -0.234
WCK3 WHAT_CHECK Chi angles: 0.05
WCK4 WHAT_CHECK Backbone: 1.785

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: "misfolded V (N-terminal) domain dimer; 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).