biotite.structure.get_residue_starts_for

biotite.structure.get_residue_starts_for(array, indices)[source]

For each given atom index, get the index that points to the start of the residue that atom belongs to.

Parameters
arrayAtomArray or AtomArrayStack

The atom array (stack) to determine the residues from.

indicesndarray, dtype=int, shape=(k,)

These indices point to the atoms to get the corresponding residue starts for. Negative indices are not allowed.

Returns
start_indicesndarray, dtype=int, shape=(k,)

The indices that point to the residue starts for the input indices.

See also

get_residue_masks
get_residue_positions

Examples

>>> indices = [5, 42]
>>> residue_starts = get_residue_starts_for(atom_array, indices)
>>> print(residue_starts)
[ 0 35]
>>> print(atom_array[indices[0]])
    A       1  ASN CG     C       -10.915    3.130   -2.611
>>> print(atom_array[residue_starts[0]])
    A       1  ASN N      N        -8.901    4.127   -0.555
>>> print(atom_array[indices[1]])
    A       3  TYR CD2    C        -1.820    4.326    3.332
>>> print(atom_array[residue_starts[1]])
    A       3  TYR N      N        -4.354    3.455   -0.111