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Simulation report

Technical information

General information

Name: Orexin receptor type 1 in complex with suvorexant

PDB id: 4ZJ8.A

Activation state: Inactive

Description: Classical unbiased (NVT ensemble) complex flexibility assay.

Submitted by: GPCRmd community

System setup

Solvent type: TIP3P

Membrane type: Homogeneous

Membrane composition: POPC

Ionic composition: Sodium ion (160 mM), Chloride (196 mM)

Number of molecules:

Water: 20080

POPC: 159

Chloride: 71

Sodium ion: 58

Suvorexant: 1

Orexin receptor type 1: 1

Total number of atoms: 87043

Simulation details

Software and version: ACEMD, GPUGRID

Forcefield and version: CHARMM, 36m Feb 2016

Time step : 4.0 fs

Delta : 0.2 ns

Replicates: 3

Accumulated simulation time: 1.4 µs

Additonal parameters: Available at "Simulation protocol & starting files"


Ismael Rodríguez-Espigares, Mariona Torrens-Fontanals, et al.. 2020. GPCRmd uncovers the dynamics of the 3D-GPCRome. Nature methods 17 (8). doi: 10.1038/s41592-020-0884-y. (http://doi.org/10.1038/s41592-020-0884-y)

Simulation components


Orthosteric ligand(s)


(1 molecule)


PDB id: 4ZJ8.A
Orexin receptor type 1

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Open with GPCRmd Workbench


No mutations found

Other molecules

Sodium ion

Specific State ID: 5016

(58 molecules)



Specific State ID: 5017

(71 molecules)



Specific State ID: 5018

(159 molecules)


Specific State ID: 5019

(20080 molecules)


Suvorexant (orthosteric lig.)

Specific State ID: 5062

(1 molecule)