SPACI score report for 2hj9 in ASTRAL 1.75:

PDB Entry: 2hj9
SPACI score: 0.4
AEROSPACI score: 0.4 (disorder; see below)

Experiment type: XRAY
Resolution: 2.34
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.527
WCK2 WHAT_CHECK Ramachandran: -1.067
WCK3 WHAT_CHECK Chi angles: -2.028
WCK4 WHAT_CHECK Backbone: 0.239

The AEROSPACI score for this entry is lower than the SPACI score because human-curated comments on the entry in SCOP contain the phrase disorder. The full comment is: "automatically matched to 2HJ9 C:52-270; automatically matched to d1jx6a_; the second PAS-domain is partly disordered in the crystal; automated match to d1zhhb1; automated match to d1jx6a_"

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).