SPACI score report for 3mm0 in ASTRAL 2.06:

PDB Entry: 3mm0
SPACI score: 0.23
AEROSPACI score: 0.23

Experiment type: XRAY
Resolution: 2.7
R-factor: 0.226
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.891
WCK2 WHAT_CHECK Ramachandran: -1.991
WCK3 WHAT_CHECK Chi angles: -5.323
WCK4 WHAT_CHECK Backbone: 0.161

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).