TABLE 2.

Interhelical angles of the EF-hands in CaM and CaBP1

Residues in the helices are shown below.

	Interhelical angles
Helix pair	Apo-CaMa	Ca2+-bound CaMb	Mg2+-bound CaBP1c	Ca2+-bound CaBP1c
		degree
α1-α2	130.9	103.8	126.8
α3-α4	130.8	101.0	140.2
α5-α6	139.5	101.0	140.1	100.6
α7-α8	126.0	101.0	126.2	110.6

^aApo-CaM (PDB accession code 1dmo): (a1) 6-18, (a2) 29-38, (a3) 45-55, (a4) 65-75, (a5) 82-90, (a6) 103-112, (a7) 118-127, (a8) 137-143.

^bCa²⁺ bound CaM (PDB accession code 1j7p): (a1) 6-19, (a2) 29-38, (a3) 45-55, (a4) 65-75, (a5) 83-92, (a6) 102-111, (a7) 118-128, (a8) 138-145.

^cCaBP1: (a₁) 22-34, (a₂) 45-54, (a₃) 61-70, (a₄) 80-88, (a₅) 101-110, (a₆) 121-130, (a₇) 141-147, (a₈) 158-165.