2rih | pdb_00002rih

CBS domain protein PAE2072 from Pyrobaculum aerophilum

spinqualitylabelsall models 2rih, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2rih is a 2 chain structure with sequence from Pyrobaculum aerophilum str. IM2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.1Å Ligands: ACY, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q8ZVX8_PYRAE Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Cystathionine beta-synthase domains are found in a myriad of proteins from organisms across the tree of life and have been hypothesized to function as regulatory modules that sense the energy charge of cells. Here we characterize the structure and stability of PAE2072, a dimeric tandem cystathionine beta-synthase domain protein from the hyperthermophilic crenarchaeon Pyrobaculum aerophilum. Crystal structures of the protein in unliganded and AMP-bound forms, determined at resolutions of 2.10 and 2.35 A, respectively, reveal remarkable conservation of key functional features seen in the gamma subunit of the eukaryotic AMP-activated protein kinase. The structures also confirm the presence of a suspected intermolecular disulfide bond between the two subunits that is shown to stabilize the protein. Our AMP-bound structure represents a first step in investigating the function of a large class of uncharacterized prokaryotic proteins. In addition, this work extends previous studies that have suggested that, in certain thermophilic microbes, disulfide bonds play a key role in stabilizing intracellular proteins and protein-protein complexes. Structures and functional implications of an AMP-binding cystathionine beta-synthase domain protein from a hyperthermophilic archaeon.,King NP, Lee TM, Sawaya MR, Cascio D, Yeates TO J Mol Biol. 2008 Jun 27;380(1):181-92. Epub 2008 May 7. PMID:18513746 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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