Interhelical angles in structures of
S100A10

Interhelical angles in structures of
S100A6

Interhelical angles in structures of
S100A7

Interhelical angles in structures of
S100B

Interhelical angles in structures of
SPARC

Interhelical angles in structures of
Calbindin D9k

Interhelical angles in structures of
Calcineurin B

Interhelical angles in structures of
Calmodulin

Interhelical angles in structures of
Calpain

Interhelical angles in structures of
Myosin Essential Light Chain

Interhelical angles in structures of
Myosin Regulatory Light Chain

Interhelical angles in structures of
Parvalbumin

Interhelical angles in structures of
Recoverin

Interhelical angles in structures of
Sarcoplasmic Calcium Binding Protein

Interhelical angles in structures of
Troponin C

Please note: Only angles between helices within a given structural regions are reported. This is because in many structures, the relative orientation between structural regions is quite variable, making any interhelical angles between helices in different regions meaningless. In some cases (for instance, recoverin), this may not be true. However, while the angles between helices in different regions of these structures may be stored in the underlying database, they are not yet reported here. Please contact the library administrator if you would like to have these angles.
Angles are calculated using the helical limits defined in the PDB file, where available. If helical limits are not defined in the PDB file, the angles for that structure are usually not stored in the database. In some of these cases, the helical limits may have been determined from the original paper reporting the structure. For homodimeric structures, the angles are calcualted for only one of the two chains. In most cases, the first chain is chosen, but in some cases another chain might be used. For instance, if there is a ligand bound to only one of the two chains, the chain with the ligand bound to it will be used..
Please also be aware that the angles reported on these pages may or may not be appropriate for your purposes. Examine the helical limits used in the calculation of the angles to determine if these angles are what you need. Also, be sure to look at the RMSDs for the angles from NMR structures. If the RMSD for an angle is large, the relative orientation of those two helices is not welldefined in the structure. In some cases, this will make the angle essentially meaningless.