cross-link

5-Bromocytosine can be used in the synthesis of cross-link products under anaerobic and aerobic conditions.

Fructosyl-lysine dihydrochloride (Fructoselysine), an Amadori glycation product, forms through the Maillard reaction between glucose and lysine. This compound serves as the precursor to glucosepane, a lysine–arginine protein cross-link, which is significant in the detection of diabetes [1].

CB1954(Tretazicar (NSC-115829)), an anticancer prodrug, is activated by NAD(P)H quinone oxidoreductase 2. It is converted in the presence of the enzyme NQO2 and co-substrate caricotamide ( EP-0152R) (EP) into a potent cytotoxic bifunctional alkylating agent.

5-Bromouridine is a brominated analog of the nucleoside uridine .1It can be incorporated into RNA and subsequently detected by antibodies against bromodeoxyuridine .25-Bromouridine decreases the viability of HL-60 and MOLT-4 cells (LC50s = 10 and 20 μM, respectively). It induces apoptosis and halts the cell cycle at the S phase in HL-60 cells. It is photoreactive, and UV irradiation has been used to cross-link RNA containing 5-bromouridine to proteins in the study of of RNA-protein interactions.1,35-Bromouridine can also be incorporated into RNA using 5-bromouridine 5'-triphosphate . 1.Tanner, N.K., Hanna, M.M., and Abelson, J.Binding interactions between yeast tRNA ligase and a precursor transfer ribonucleic acid containing two photoreactive uridine analoguesBiochemistry27(24)8852-8861(1988) 2.Li, X., Patel, R., Melamed, M.R., et al.The cell cycle effects and induction of apoptosis by 5-bromouridine in cultures of human leukaemic MOLT-4 and HL-60 cell lines and mitogen-stimulated normal lymphocytesCell Prolif.27(6)307-319(1994) 3.Gott, J.M., Willis, M.C., Koch, T.H., et al.A specific, UV-induced RNA-protein cross-link using 5-bromouridine-substituted RNABiochemistry30(25)6290-6295(1991)

DL-Glyceraldehyde (Glyceric aldehyde) is produced from the action of the enzyme glyceraldehyde dehydrogenase, which converts glycerol to glyceraldehyde using NADP as a cofactor. When present at sufficiently high levels, DL-Glyceraldehyde can be a cytotoxin and a mutagen. A cytotoxin is a compound that kills cells. A mutagen is a compound that causes mutations in DNA. DL-Glyceraldehyde is a highly reactive compound that can modify and cross-link proteins. DL-Glyceraldehyde modified proteins appear to be cytotoxic, depress intracellular glutathione levels, and induce reactive oxygen species (ROS) production (PMID: 14981296 ). DL-Glyceraldehyde has been shown to cause chromosome damage to human cells in culture and is mutagenic in the Ames bacterial test.

PBD dimer-2 (compound 2c), a C8-linked pyrrolobenzodiazepine dimer, has the capability to span an extra base pair and cross-link the 5′-Pu-GA(T/A)TC-Py sequence. It serves as a potential payload for antibody–agent conjugates (ADCs) and is under research for cancer treatments [1] [2].

Alagebrium is a advanced glycation endproducts (AGE) cross-link breaker.

Fructosyl-lysine is the precursor to glucosepane. Fructosyl-lysine is a lysine–arginine protein cross-link that can be an indicator in diabetes detection. Fructosyl-lysine is an amadori glycation product from the reaction of glucose and lysine by the Maillard reaction.

GMBS, a heterobifunctional cross-linker, possesses an N-hydroxysuccinimide (NHS) ester at one end and a maleimide group at the other. It is commonly used in bioconjugation to link amines and sulfhydryls [thiols], forming stable amide and thioether bonds, respectively, which are useful in creating protein and peptide conjugates.