CV:NAPBO: Difference between revisions

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Primitive definition of base pair opening for the A:B base pair defined as a dihedral angle between three vectors: base A vector (C and D points), helical axis vector (A and B points), and base B vector (E and F points). This CV should provide the same value as [[CV:DIH2]] but with the different order of atom groups.
Primitive definition of base pair opening for the A:B base pair defined as a dihedral angle between three vectors: base A vector (C and D points), helical axis vector (A and B points), and base B vector (E and F points). This CV should provide the same value as [[CV:DIH2]] but with the different order of atom groups.


'''PBC note:''' The minimum-image convention is applied to vectors |AB|, |CD|, and |EF| only if the [[General setup|fenable_pbc]] option is activated. The convention is not used to calculate the center of mass. It is therefore required that atoms within a group are either covalently bound or are part of complex that will not be separated or reimaged during a simulation.
'''NOTE:''' This CV is not well tested.





Latest revision as of 17:17, 12 February 2019

Navigation: Documentation / Collective Variables / Nucleic Acids / CV:NAPBO


Distance

Angle

Coordination

Shape

Nucleic Acids

Puckering

Special

Energy

Algebra

Definition

Primitive definition of base pair opening for the A:B base pair defined as a dihedral angle between three vectors: base A vector (C and D points), helical axis vector (A and B points), and base B vector (E and F points). This CV should provide the same value as CV:DIH2 but with the different order of atom groups.

NOTE: This CV is not well tested.


Specification

Section name: NAPBO

Key Type Default Description




name string unique CV name
group_a mask atoms specifying the point A
group_b mask atoms specifying the point B
group_c mask atoms specifying the point C
group_d mask atoms specifying the point D
group_e mask atoms specifying the point E
group_f mask atoms specifying the point F

Keys in bold are mandatory.