---
search:
boost: 5.0
---
# Slot: molecule_charge
_Electrostatic charge of a molecule._
URI: [https://CCPBioSim.ac.uk/biosim-schema/molecule_charge](https://CCPBioSim.ac.uk/biosim-schema/molecule_charge)
## Applicable Classes
| Name | Description | Modifies Slot |
| --- | --- | --- |
| [MoleculeID](../classes/MoleculeID.md) | Identifiers of a molecule type in the simulated system | no |
## Properties
### Type and Range
| Property | Value |
| --- | --- |
| Range | [ChargeQuantity](../classes/ChargeQuantity.md) |
| Domain Of | [MoleculeID](../classes/MoleculeID.md) |
### Cardinality and Requirements
| Property | Value |
| --- | --- |
### Value Constraints
| Property | Value |
| --- | --- |
| Regex Pattern | `^[+-]?\d+(\.\d+)?$` |
## Examples
| Value |
| --- |
| -1.0 |
## Identifier and Mapping Information
### Annotations
| property | value |
| --- | --- |
| engine_mapping | [{'engine': 'toptrajparser', 'key': 'molecule_charge', 'unit': 'e'}] |
### Schema Source
* from schema: https://CCPBioSim.ac.uk/biosim-schema/
## Mappings
| Mapping Type | Mapped Value |
| --- | --- |
| self | https://CCPBioSim.ac.uk/biosim-schema/molecule_charge |
| native | https://CCPBioSim.ac.uk/biosim-schema/molecule_charge |
## LinkML Source
```yaml
name: molecule_charge
annotations:
engine_mapping:
tag: engine_mapping
value:
- engine: toptrajparser
key: molecule_charge
unit: e
description: Electrostatic charge of a molecule.
examples:
- value: '-1.0'
from_schema: https://CCPBioSim.ac.uk/biosim-schema/
rank: 1000
domain_of:
- MoleculeID
range: ChargeQuantity
pattern: ^[+-]?\d+(\.\d+)?$
```