cap 18

CAP18 (rabbit) is a 37 amino acid antimicrobial peptide derived from rabbit granulocytes. It exhibits extensive antimicrobial activity against both Gram-positive (IC50, 130-200 nM) and Gram-negative (IC50, 20-100 nM) bacteria. Thus, CAP18 (rabbit) holds promise for the study and advancement of bacterial sepsis research.

7-Methylguanosine 5’-diphosphate (7-Methyl-GDP) sodium, a cap analog, can be used in the synthesis of mRNA cap analogues[1]. 7-Methylguanosine 5’-diphosphate sodium inhibits binding of eukaryotic initiation factors to reovirus capped mRNA and complex formation involving uncapped mRNA or 18 S rRNA[1].T. brucei mRNA decapping enzyme (TbDcp2) that cleaves 7-Methylguanosine 5’-diphosphate sodium from capped RNA to generate pRNA, a substrate for TbCe1[2]. [1]. Sonenberg N, et al. Nonspecific effect of m7GMP on protein-RNA interactions. J Biol Chem. 1978;253(19):6630-6632.[2]. Ignatochkina AV, et al. The messenger RNA decapping and recapping pathway in Trypanosoma. Proc Natl Acad Sci U S A. 2015;112(22):6967-6972.

2',3'-O-Isopropylideneguanosine is an alkylated guanosine building block.1,2It has been used in the synthesis of ordered honeycomb microporous films and mRNA cap analogs. 1.Gao, Y.-F., Huang, Y.-J., Xu, S.-Y., et al.Ordered honeycomb microporous films from self-assembly of alkylated guanosine derivativesLangmuir27(6)2958-2964(2011) 2.Kore, A.R., Shanmugasundaram, M., and Vlassov, A.V.Synthesis and application of a new 2',3'-isopropylidene guanosine substituted cap analogBioorg. Med. Chem. Lett.18(17)4828-4832(2008)

LL-37 (18-37) 是 LL-37 的一种抗菌肽片段。对S. aureus和C. albicans具有活性，最小致死浓度分别为4 µM 和10 µM。在10到50 µM 的浓度范围内，它还能抑制E. histolytica营养体的生长。