Thymic & Immune

KPV

alpha-MSH (11-13)

3 residues · 342 Da · 55 atoms

The C-terminal tripeptide of alpha-melanocyte-stimulating hormone. Small enough to show every hydrogen, and studied for anti-inflammatory signalling.

In our catalogue

LL-37

Human cathelicidin, all 37 residues

37 residues · 4493 Da · 318 atoms

The complete human cathelicidin. Strongly cationic, with five lysines and five arginines, which is what lets it associate with membranes. One of the largest structures here, so it is drawn without hydrogens to stay readable.

Reference entry · not stocked

Peptide T

Octapeptide of threonines

8 residues · 858 Da · 115 atoms

Eight residues, four of them threonine, which is unusual enough to be worth seeing. Named for that threonine content.

Reference entry · not stocked

Rigin

4 residues · 457 Da · 65 atoms

Four residues from immunoglobulin G, structurally analogous to tuftsin. Small enough to show every hydrogen.

Reference entry · not stocked

Splenopentin

5 residues · 694 Da · 101 atoms

Five residues from splenin. One residue different from thymopentin, which is also in this library: a glutamate here where that has an aspartate.

Reference entry · not stocked

Thymocartin

4 residues · 517 Da · 77 atoms

Four residues, thymopentin minus its terminal tyrosine. Both are here, so the difference is visible directly.

Reference entry · not stocked

Thymopentin

Thymopoietin residues 32 to 36

5 residues · 680 Da · 98 atoms

Five residues, the active fragment of a much longer thymic protein. Small enough to show every hydrogen.

Reference entry · not stocked

Thymosin alpha-1

Acetylated 28-residue thymic peptide

28 residues · 3108 Da · 217 atoms

Twenty-eight residues with an acetyl group capping the N-terminus, which is drawn here. Strikingly acidic: eight glutamates and four aspartates out of twenty-eight.

In our catalogue

Thymulin

9 residues · 859 Da · 60 atoms

Nine residues opening with a pyroglutamate ring. In its active form it binds a zinc ion, which is not modelled here, so this is the peptide alone.

Reference entry · not stocked

Tuftsin

4 residues · 501 Da · 77 atoms

Four residues carrying two basic side chains. The same fragment that Selank is built around, shown here on its own.

Reference entry · not stocked

VIP

Vasoactive intestinal peptide

28 residues · 3326 Da · 234 atoms

Twenty-eight residues sharing the same architecture as PACAP and secretin: a structured N-terminus and a helical tail. Ends in an amide.

Reference entry · not stocked