TABLE 1 .

List of precursors, their reference numbers, final working concentrations, and incorporation in the new molecules

Polyamine precursor or dipeptide		Catalog no. (Sigma-Aldrich) or other supplier	Concn in medium	Incorporation in molecule
No.	Name			Partial	Full
Polyamine precursors
1	Diaminopropane	D23602	8 mM	Yes	Yes
2	Spermidine	S0266	8 mM	Yes	Yes
3	Spermine	S4264	1 mM	NDa	ND
4	Cadaverine	D22606	1 mM	Yes	ND
5	Putrescine	P5780	2.5 mM	Yes	Yes
6	Norspermidine	I1006	10 mM	Yes	Yes
7	m-Xylylenediamine	X1202	2.5 mM	Yes	ND
8	N,N′-Bis(2-aminoethyl)-1,3- propanediamine	333131	5 mM	ND	ND
9	N-Benzylethylenediamine	462292	2.5 mM	Yes	Yes
10	4-Aminobenzylamine	368466	2.5 mM	Yes	ND
11	4-(2-Aminoethyl)aniline	123056	0.5 mM	Yes	ND
12	4,4′-Oxydianiline	248398	0.05 mM	Yes	ND
13	4,4′-Diaminodiphenylmethane	32950	0.01 mM	ND	ND
14	1,5-Diaminonaphthalene	D21200	5 mM	ND	ND
15	2,2′-Thiobisacetamide	S365033	0.02 mM	ND	ND
16	Sulfaguanidine	S8751	2.5 µM	ND	ND
17	p-Aminobenzenesulfonamide	S9251	0.05 µM	ND	ND
18	Urea	U5378	5 mM	ND	ND
19	N-Phenylthiourea	P7629	5 mM	ND	ND
20	3,3′-Diamino-N- methyldipropylamine	188441	5 mM	ND	ND
21	1, 8-Diaminooctane	D22401	5 mM	Yes	ND
Dipeptides
22	Dipeptide KR	Biomatik USA	0.01 mM	ND	ND
23	Dipeptide KK			ND	ND
24	Dipeptide KQ			ND	ND
25	Dipeptide QN			ND	ND

^aND, not detected.