Table 1 A summary of different restrain methods employed in the steered molecular dynamics simulation during the last three decades.

From: Treatment of flexibility of protein backbone in simulations of protein–ligand interactions using steered molecular dynamics

Nr

Year

Complex

Fixed atoms

PDB ID

1

1997

Bacteriorhodopsin and retinal (C20H28O)

Six atoms, the Cα—atoms of six residues, at the ends of helices A, B, and C16

1BRD

2

1999

Human retinoic acid receptor hRAR and retinoic acid (C20H28O2)

Set of atoms, all of Cα—atoms in the top part of the protein31

2LBD

3

1999

Gelsolin sesgment 1 and Adenosine-5'-triphosphate (C10H16N5O13P3)

Set of atoms, all carbon atoms of residues 31, 26, 56, 215, 307, and 333 at the front face of the protein33

1EQY

4

2002

Acetylcholine receptors and huperzine A (C15H18N2O)

Center of mass of AChE protein37

1VOT

5

2003

HIV-1 reverse transcriptase and (2-acetyl-5-methylanilino)(2,6-dibromophenyl)acetamide (C17H16Br2N2O2)

All heavy atom38

1HNI

6

2005

Acetylcholine receptors and 1-benzyl-4-[(5,6-dimethoxy-1-indanon-2-yl)methyl]piperidine (C24H29NO3)

None report39

1EVE

7

2006

Acetylcholine receptors and acetylcholine (C7H16NO2+)

One atom, a Cα of residue V-10940

1I9B

8

2010

Neuraminidase and oseltamivir carboxylate (C14H24N2O4)

Center of mass of protein Cα—atoms32

2HU4, 3CL0, 3CL2

9

2015

Thrombin and C32H35BrN2O2S, neuraminidase and C11H19NO9, penicillopepsin and alpha-D-mannopyranose (C6H12O6)

Set of atoms, Cα—atoms of the receptor which are 3 Å behind the last atom of the ligand41

1D3D, 1NSC, 1APT

10

2015

Bovine beta-lactoglobulin and octanoic acid (C8H16O2)

Cα—atoms far from binding site are fixed42

3NQ9

11

2019

Human Adenosine A2A Receptor and C23H29N7O6, C16H15N7O2

Five atoms, Cα—atoms of five residues at the top of the transmembrane helices (residues 9, 80, 177, 256 and 270)43

4UHR, 5IU4

12

2020

Trypsin and benzamidine (C7H8N2)

All Cα—atoms44

3PTB

13

2020

Human Abl kinase domain and imatinib (C29H31N7O)

All backbone atoms of protein’s binding pocket45

2HYY

14

2020

RDB of Spike protein and simeprevir (C38H47N5O7S2), or lumacaftor (C24H18F2N2O5)

All atoms of protein backbone46

6LZG

15

2021

Heat shock protein 90 (Hsp90) and C13H10BrN5

All Cα—atoms47

3K99

16

2022

Spike protein of SAR-2 virus and ACE2 and silodosin (C25H32F3N3O4)

Cα—atoms of residues 519, 333, 360, 525, 386 and 517.48

6LZG

17

2022

Neuraminidase and capsaicin (C18H27NO3)

All Cα—atoms49

2HU0