parts


                    Table
1: Details of the parts used in the Peppytide model

Part-name

Subparts

Description

Weight (g)

Total (g)

Amide unit

3D printed amide group

ABS plastic

4.53












5.47 g

2 H-bond Neodymium rod magnets

For O and H; 3/16"D x 1/8"H; pull force = 2.49 lbs.

5 Neodymium rod magnets

Neodymium rod magnets. For representing rotational barriers in dihedrals (3 for phi; 2 for psi); 1/8"D x 1/8"H; pull force = 1.43 lbs.

0.94 (0.19 each)

                                                                   Amide total =

 

Alpha-carbon unit

3D printed alpha-carbon unit

ABS plastic

3.04










3.78 g

4 Neodymium rod magnets

Neodymium rod magnets. For representing rotational barriers in dihedrals (2 for phi; 2 for psi); 1/8"D x 1/8"H; pull force = 1.43 lbs.

0.74 (0.19 each)

                                                                               Ca     total =

 

Covalent Bonds (3 bonds to connect the alpha carbon to 2 amides, and one side chain residue)

3 Screws

Pan-head machine screw 5/8"H, 4-40 thread

1.22 (each bond)

 

 

 

 

 

 

 


3.66 g

3 Nuts

Machine screw nuts; 3/32"H, 0.25"D, 4-40 thread

3 Spacers

Nylon spacer; 0.25"D x 3/8"H

3 bonds total =

 

Methyl group Unit

3D printed part

ABS plastic

2.68



2.68 g

Methyl group total =

 

1 complete monomeric subunit

(1 amide, 1 Ca, 1 methyl group, 3 bonds)

15.59



15.59 g

Monomer subtotal =

 

An alanine 9-mer Peppytide model

140.31


140.31 g

Model total =

 

 

 

                                    Table 2: Parts and suppliers we used

Part

Supplier

Part Number

uPrint Plus Model Material, P430 Color Model Material Spools (each 30 cu. in) – Package of 5 (red, blue, black, ivory)

Dimension (Paton Group)

340-21200

uPrint P400-SR Soluble Support Material (each 30 cu. in) – Package of 5

Dimension (Paton Group)

345-20005

Screw

McMaster-Carr

(mcmaster.com)

91735A109

Nut

91841A005

Spacer

94639A202

Magnet (rotational barrier)

Magcraft

NSN0658

Magnet (H-bond)

K&J Magnetics, Inc.

(kjmagnetics.com)

D32-N52