CV:NASBO

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

---

Distance

DD, DIS, MDIS, MDISG, ODIS, OPOS, OPOS2, ORAD, ORAD2, POS, RAD

Angle

ANG, ANG2, AXANG, AXANG2, DIH, DIH2, PANG, PVANG

Coordination

CNFF, CNGFF, CNSW, CNGSW, CNRF, CNGRF

Shape

ACYL, ASPH, EVEC, PMGTD, PMOGT, PLANE, RGYR, RMSDT, SANIS

Nucleic Acids

NALBPP, NASBPP, NASBPPOLD, NALSTP, NASSTP, NASSTPOLD, NASBO, NAPBO, NABEND

Puckering

PUCK6Q, PUCK6P, PUCK6T, PUCK5Q, PUCK5P

Special

WORMPOS, WORMANG

Energy

POT, EGAP

Algebra

ADD, SUB, MULT, DIV, FSWITCH, RSWITCH

Definition

The simple base pair opening for the A:B base pair. This is an earlier implementation providing only opening, full set of simple base pair parameters is availble via CV:NASPP.

IMPORTANT: It is critical that the A and B bases are not separated during simulation due to imaging of DNA chains into the simulation box. Use ether topjoinmol from CATs to merge both chains into a single molecule or use the correct value of iwrap in sander or pmemd.

Specification

Section name: NASBO

Key	Type	Default	Description
name	string		unique CV name
group_a	mask		atoms for the base A ring
reference_a	string		name of the file with the reference structure in the XYZ format, the structure must have the same number of atoms as the group group_a
group_b	mask		atoms for the base B ring
reference_b	string		name of the file with the reference structure in the XYZ format, the structure must have the same number of atoms as the group group_b
skip_mass_test	logical	.false.	if .true. it does not control atom masses between the system and loaded reference structures

Keys in bold are mandatory.