Words similar to cyclases
Example sentences for: cyclases
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The soluble guanylyl cyclases are important signaling molecules in animals that transduce signals mediated by the gaseous first messenger, nitric oxide [ 16 17 18 19 ] . In animals, NO functions as a neurotransmitter both in the central and peripheral nervous system.
The majority of previously known nucleotide cyclases belong to two major folds.
The classical adenylyl cyclases, guanylyl cyclases and the GGDEF (diguanylate cyclase) domains share the catalytic palm domain with the family B DNA polymerases, reverse transcriptases, viral RNA dependent RNA polymerases and eukaryote-type primases [ 4 13 14 ] . The pathogenic adenylyl cyclases of several bacteria and the CyaA-like proteobacteria adenylyl cyclases are extremely divergent versions of the catalytic domain seen in the Pol-β family of nucleotidyl transferases [ 15 ] (also see SCOP database: http://scop.mrc-lmb.cam.ac.uk/scop/).
We postulate that these enzymes are likely to chelate 2 divalent cations and are likely follow a bimetal reaction mechanism similar to what has been proposed for nucleotide cyclases, nucleic acid polymerases, or certain phosphoesterases such as those of the HD and DHH superfamilies.
At convergence, this search detected, in addition to the soluble guanylyl cyclases from the animals, several bacterial proteins, including certain methyl-accepting chemotaxis receptors from bacteria such as Desulfovibrio and Clostridium . Transitive searches initiated with the small bacterial proteins that entirely correspond to the N-terminal-most domain of the SGCs also recovered the same set of proteins as observed in the earlier search, with e <.01.
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