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Cyclic di-GMP (also called cyclic diguanylate and c-di-GMP) is a second messenger used in signal transduction in a wide variety of bacteria. [1] Cyclic di-GMP is not known to be used by archaea , and has only been observed in eukaryotes in Dictyostelium . [ 2 ]
PilZ is a c-di-GMP binding domain and PilZ domain-containing proteins represent the best studied class of c-di-GMP effectors. [2] C-di-GMP, cyclic diguanosine monophosphate, the second messenger in cells, is widespread in and unique to the bacterial kingdom. [3] Elevated intracellular levels of c-di-GMP generally cause bacteria to change from a ...
This molecule, referred to as 2′3′-cGAMP (cyclic [G(2’,5’)pA(3’,5’)p]), functions as an endogenous second messenger inducing STING-dependent type I interferon response. [1] [3] cGAMP has also been shown to be an effective adjuvant that boosts the production of antigen-specific antibodies and T cell responses in mice.
The substrates of diguanylate cyclases (DGCs) are two molecules of guanosine triphosphate (GTP) and the products are two molecules of diphosphate and one molecule of cyclic di-3’,5’-guanylate (cyclic di-GMP). Degradation of cyclic di-GMP to guanosine monophosphate (GMP) is catalyzed by a phosphodiesterase (PDE).
Its function is to act as a diguanylate cyclase and synthesize cyclic di-GMP, which is used as an intracellular signalling molecule in a wide variety of bacteria. [ 1 ] [ 2 ] Enzymatic activity can be strongly influenced by the adjacent domains .
Guanylate cyclase (EC 4.6.1.2, also known as guanyl cyclase, guanylyl cyclase, or GC; systematic name GTP diphosphate-lyase (cyclizing; 3′,5′-cyclic-GMP-forming)) is a lyase enzyme that converts guanosine triphosphate (GTP) to cyclic guanosine monophosphate (cGMP) and pyrophosphate: [1]
Cyclic guanosine monophosphate (cGMP) is a cyclic nucleotide derived from guanosine triphosphate (GTP). cGMP acts as a second messenger much like cyclic AMP. Its most likely mechanism of action is activation of intracellular protein kinases in response to the binding of membrane -impermeable peptide hormones to the external cell surface. [ 1 ]
Cyclic GMP-AMP (cGAMP) is a cyclic dinucleotide (CDN) and the first to be found in metazoans. Other CDNs (c-di-GMP and c-di-AMP) are commonly found in bacteria, archaea, and protozoa. As the name suggests, cGAMP is cyclic molecule composed of one Adenine monophosphate (AMP) and one Guanine monophosphate (GMP) connected by two phosphodiester bonds.