Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA117773 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Transcription signature of Multiple Sclerosis in peripheral blood mononuclear cells.
| PRJNA123611 | ENA
Project description:MicroRNA regulate immune pathways in T-cells in multiple sclerosis (MS) mRNA
| PRJNA186786 | ENA
Project description:Prediction of acute multiple sclerosis relapses by transcription levels of peripheral blood cells
| PRJNA116533 | ENA
Project description:Pregnancy changes expression in peripheral blood mononuclear cells of Multiple Sclerosis (MS) patients
| PRJNA123615 | ENA
Project description:Whole blood gene expression profiling of multiplex multiple sclerosis family
| PRJNA399733 | ENA
Project description:longitudinal expression profiling in whole blood of multiple sclerosis patients and controls [IFN_discovery dataset]
| PRJNA178315 | ENA
Project description:longitudinal expression profiling in whole blood of multiple sclerosis patients and controls [IFN_replication dataset]
| PRJNA178316 | ENA
Project description:Kynureninase is a member of a large family of catalytically diverse but structurally homologous pyridoxal 5'-phosphate (PLP) dependent enzymes known as the aspartate aminotransferase superfamily or alpha-family. The Homo sapiens and other eukaryotic constitutive kynureninases preferentially catalyze the hydrolytic cleavage of 3-hydroxy-l-kynurenine to produce 3-hydroxyanthranilate and l-alanine, while l-kynurenine is the substrate of many prokaryotic inducible kynureninases. The human enzyme was cloned with an N-terminal hexahistidine tag, expressed, and purified from a bacterial expression system using Ni metal ion affinity chromatography. Kinetic characterization of the recombinant enzyme reveals classic Michaelis-Menten behavior, with a Km of 28.3 +/- 1.9 microM and a specific activity of 1.75 micromol min-1 mg-1 for 3-hydroxy-dl-kynurenine. Crystals of recombinant kynureninase that diffracted to 2.0 A were obtained, and the atomic structure of the PLP-bound holoenzyme was determined by molecular replacement using the Pseudomonas fluorescens kynureninase structure (PDB entry 1qz9) as the phasing model. A structural superposition with the P. fluorescens kynureninase revealed that these two structures resemble the "open" and "closed" conformations of aspartate aminotransferase. The comparison illustrates the dynamic nature of these proteins' small domains and reveals a role for Arg-434 similar to its role in other AAT alpha-family members. Docking of 3-hydroxy-l-kynurenine into the human kynureninase active site suggests that Asn-333 and His-102 are involved in substrate binding and molecular discrimination between inducible and constitutive kynureninase substrates.
| S-EPMC2531291 | biostudies-literature
Project description:RNA extracted at 240min. Samples are rRNA depleted. Expression measurement of Homo sapiens genes.
2019-07-31 | GSE114179 | GEO
Project description:miRNA Profiling from total blood of Multiple Sclerosis and control samples
| PRJNA117905 | ENA