Regulator Proteins

Although the mechanisms of action of a number of Axon Ligands™ remain ambiguous, they can significantly affect biological processes of various kinds. While interacting with regulator proteins in this section, they may have therapeutic applications as their target proteins play a role in the regulation and/or facilitation of processes within the cell, without having enzymatic or transporting properties by themselves. Additionally, their mode of action may not have been elucidated in great detail, yet evidence has been found for a certain role in, for example:  signaling pathwaysapoptosis, or stem cell differentiation.
Calmodulin (CaM) is a ubiquitous regulatory protein that communicates the presence of calcium to its molecular targets and correspondingly modulates their function. This key signaling protein is important for controlling the activity of hundreds of membrane channels and transporters[1]. CaM contains two globular domains each containing a pair of helix-loop-helix Ca2+-binding sites (EF-hands). Upon Ca2+ binding, conformational transitions in calmodulin are induced that changes its affinity to target proteins[2]. One example of the proteins function being regulated by CaM is the family of auqaporins (AQPs): water channels that facilitate the flux of water molecules across membranes. Regulation of the water permeability by CaM is achieved through a Ca2+-dependent interaction between Ca2+-CaM and the cytoplasmic C-terminal domain of the AQP[3].
Avridine (Axon 2099),  for example, is a lipoidal amine with interferon-inducing and adjuvant properties specifically related to Newcastle disease[4]. What’s more, although avridine is a synthetic non-immunogenic adjuvant, it is also known to induce arthritis in rats in a predictable and T-cell dependent way. However, the mechanism of action by which this Avridine Induced Arthritis (AvIA) is triggered, or acts as adjuvant of the Newcastle disease antigen has not been elucidated in detail[5].

[1] S.L. Reichow et al. Allosteric mechanism of water-channel gating by Ca2+-calmodulin. Nat. Struct. Mol. Biol. 2013, 20, 1085-1092.
[2] N.V. Valeyev et al. Elucidating the mechanisms of cooperative calcium-calmodulin interactions: a structural systems biology approach.BMC Systems Biol. 2008, 2, 48.
[3] S.L. Reichow et al. Allosteric mechanism of water-channel gating by Ca2+–calmodulin. Nat. Struct. Mol. Biol. 2013, 20, 1085-1092.
[4] M.M. Rweyemamu et al. Efficacy of avridine as an adjuvant forNewcastle disease virus antigen in chickens. Am. J. Vet. Res. 1986, 47, 1243-1248.
[5] C. Vingsbro, R. Jonsson, R. Holmdahl. Avridine-induced arthritis in rats; a T cell-dependent chronic disease influenced both byMHC genes and by non-MHC genes. Clin Exp Immunol 1995, 99, 359-363.

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Axon ID Name Description From price
2141 ABT 199 Potent, orally bioavailable BCL-2-selective inhibitor €135.00
1985 AT 406 Antagonist of Inhibitor of apoptosis proteins (IAPs) €145.00
2099 Avridine Lipoidal amine; interferon-inducing and adjuvant properties €85.00
2185 BAM 7 Selective small-molecule activator of proapoptotic BAX €105.00
2774 Barbadin β-Arrestin/β2-Adaptin inhibitor  Recently added €110.00
2624 BF844

CLRN1-N48K stabilizer

1828 BH3I 1 Inhibitor of Bcl-2 family protein €125.00
2334 BT2 Allosteric inhibitor of BCKDC kinase (BDK) and Mcl-1 inhibitor €95.00
2645 CC-885 Cereblon (CRBN) modulator with potent anti-tumour activity €145.00
2161 CCT 031374 hydrobromide Inhibitor of TCF-dependent transcription of genes of Wnt signaling pathway €60.00
1252 CGS 9343B Calmodulin inhibitor €95.00
2594 CPI 0610 Selective and metabolically stable inhibitor of BET bromodomains €75.00
2438 Cuspin-1 Upregulator of the Survival of Motor Neuron protein (SMN) by Ras signaling activation €95.00
2701 EED226 Potent, selective and orally bioavailable PRC2 inhibitor €105.00
2847 ESI-08 Selective EPAC antagonist  Recently added €145.00

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