. 2004 Aug 10;382(Pt 1):375–383. doi: 10.1042/BJ20040142

Table 3. Areas of interacting helical surfaces for the self-association of S100P and its interaction with S100A1.

	Area (Å²)^*
Helical interfaces	S100P/S100A1	S100P/S100P
Helix1/helix1	797	835
Helix4/helix4	791	707
Helix1/helix4	1016	905
Other contacts	519	455
Total contact area	3123^†	2902^†

* Areas were calculated using the computer program GRASP.

† The total contact area of the heterodimer is slightly larger (nearly 8%) than that of the homodimer, suggesting that the heterodimer may be more stable than the homodimer.