Cytosim PI Cytoskeleton Simulator

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Classes
Couple and Derived Activities
List of objects | How to create objects

A Couple contains two Hand, and can thus crosslink two Fibers. More...

## Classes
class | Couple
| A set of two Hand linked by an elastic element. More...
class | Bridge
| A specialized kind of Couple. More...
class | CoupleLong
| A Couple with a non-zero resting length. More...
class | Crosslink
| A specialized kind of Couple. More...
class | CrosslinkLong
| A Crosslink with a non-zero resting length. More...
class | Fork
| A specialized kind of Couple. More...
class | Shackle
| A specialized kind of Couple. More...
class | ShackleLong
| A Shackle with a non-zero resting length. More...

## Detailed Description

The plain Couple may crosslink two Fiber irrespective of their configuration. Derived classes implement specificity, angular stiffness, etc.

List of classes accessible by specifying `couple:activity`.

`activity` | Clas | Parameters
--- | --- | ---
`diffuse` | Couple | Parameters of Couple (default)
`fork` | Fork | Parameters of Fork
`crosslink` | Crosslink | Parameters of Crosslink
`bridge` | Bridge | Parameters of Bridge
`slide` | Shackle | Parameters of Shackle

Example:

set couple complex
{
hand1 = kinesin
hand2 = kinesin
stiffness = 100
diffusion = 10
activity = crosslink
length = 0.02
}

You can attach the hands of a Couple:

new couple protein
{
attach1 = INTEGER, REAL
attach2 = INTEGER, REAL
}

where:

- INTEGER designates the fiber:
  - 1 for the first fiber
  - 2 for the second, etc.
  - 0 designates the last fiber,
  - -1 is the penultimate one, etc.
- REAL is the abscissa of the attachment point