ligases


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Related to ligases: DNA polymerase, restriction endonuclease, oxidoreductase, alkaline phosphatase, Isomerases, Kinases, methylases

ligases

[lī′gāsəz]
Etymology: L, ligare + Fr, diastase, enzyme
a group of enzymes that catalyze the formation of a bond between substrate molecules coupled with the breakdown of a pyrophosphate bond in ATP or a similar donor molecule. Examples of ligases include the synthetase enzymes.
References in periodicals archive ?
Structural insights at atomic resolution, combined with in vitro and in vivo functional studies are designed to reveal (i) how the signalosome deneddylates and maintains the bound ligases in an inactive state, (ii) how the multiple CSN subunits bind to structurally diverse CRLs, and (iii) how CSN is itself subject to regulation by post-translational modifications or additional further factors.
Sept 2, 2011), Identification and remediation of biases in the activity of RNA ligases in small-RNA deep sequencing Nuc Acid Res, 1--12.
The aim of the present study is to determine the level of the E3 SUMO-Protein Ligase (NSMCE2) in pg/ml and their relationship to 5'-nucleotidase and XOR enzymes U/l and some biochemical parameters including Uric acid, Total protein (Albumin, Globulin and Alb/Glb ratio) in Patients with Atherosclerosis compared with healthy normal.
Because parkin is a ubiquitin ligase, researchers have assumed that its absence allows some other protein or proteins to evade proteasomal destruction and thus accumulate abnormally and harm neurons.
E3 ubiquitin ligase is an enzyme that catalyzes covalent binding of multiple ubiquitin proteins to its substrates and enhances degradation of the substrate proteins in the proteasome.
Genotypic classification--Under normal conditions of peptidoglycan synthesis in enterococci, two molecules of D-alanine are joined by a ligase enzyme to form D-Ala-D-Ala, which is then added to UDP-N-acetylmuramyl-tripeptide to form the UDP-N-acetylmuramyl-pentapeptide.
DNA ligases then join the DNA molecules with "sticky ends" to bacterial plasmids that also have been cleaved by restriction enzymes.
For species identification of enterococcal isolates, the genes encoding D-alanine-D-alanine ligases specific for E.
The researchers then compared the gene with that in normal rats to find that only diabetes-afflicted rats showed ''nonsense mutation'' in Cb1b, a kind of ubiquitin-protein ligases, they said in the journal.
This process requires a family of dedicated enzymes, such as ligases, for completion.
Conducting a small molecule screening for inhibitors that attenuate hyperplasia phenotype caused by E3 ligases mutation.