37579-77-4Relevant articles and documents
2,4-BIS(4-METHOXYPHENYL)-1,3,2,4-DITHIADIPHOSPHETANE 2,4-DISULFIDE, LR, AS A NEW ACTIVATION REAGENT IN PREPARATION OF PEPTIDES, AMIDES AND ESTERS
Pedersen, U.,Yde, B.,Andersen, T.,Thorsen, M.,Clausen, K.,Lawesson, S.-O.
, p. 381 - 384 (2007/10/02)
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An Approach to the Elucidation of Metabolic Breakdown Products of the Luteinizing Hormone-Releasing Hormone
Stetler-Stevenson, Mary Alice,Yang, Dai Chang,Lipkowski, Andrew,McCartney, Linda,Peterson, Darryl,Fluoret, George
, p. 688 - 692 (2007/10/02)
Metabolic breakdown of the luteinizing hormone-releasing hormone (LH-RH) could lead to the following fragments containing pyroglutamic acid: pyroglutamic acid (1), pGlu-His (2), pGlu-His-Trp (3), pGlu-His-Trp-Ser (4), etc., and finally pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly (10).We have synthesized fragments 2-10 and successfully separated all ten metabolites and LH-RH by high-performance liquid chromatography (HPLC) with μBondapak C18 column.In a test of viability of the method, cochromatography of fragments 1-10 and LH-RH with the products of chymotryptic digestion of tritiated LH-RH showed radioactive peaks corresponding to the expected products, fragments 3 and 5.Analysis of the products of incubation of a rat kidney homogenate supernatant with LH-RH showed fragments 1-4 and LH-RH.The finding of breakdown at position 4 uncovers a new site of LH-RH breakdown and points the way to the design of potential LH-RH antagonists and agonists where the 4 position would be substituted with unnatural amino acids to prevent breakdown.