SPACI score report for 2yls in ASTRAL 2.07:

PDB Entry: 2yls
SPACI score: 0.38
AEROSPACI score: 0.38

Experiment type: XRAY
Resolution: 2.26
R-factor: 0.18932
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.442
WCK2 WHAT_CHECK Ramachandran: -1.18
WCK3 WHAT_CHECK Chi angles: -1.781
WCK4 WHAT_CHECK Backbone: 2.513

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).