2bra

Structure of N-Terminal FAD Binding motif of mouse MICAL

spinqualitylabelsall models 2bra, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2bra is a 2 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: CL, FAD Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MICA1_MOUSE Monooxygenase that promotes depolymerization of F-actin by mediating oxidation of specific methionine residues on actin. Acts by modifying actin subunits through the addition of oxygen to form methionine-sulfoxide, leading to promote actin filament severing and prevent repolymerization. Acts as a cytoskeletal regulator that connects NEDD9 to intermediate filaments (By similarity). Also acts as a negative regulator of apoptosis via its interaction with STK38 and STK38L; acts by antagonizing STK38 and STK38L activation by MST1/STK4. 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 During development, neurons are guided to their targets by short- and long-range attractive and repulsive cues. MICAL, a large multidomain protein, is required for the combined action of semaphorins and plexins in axon guidance. Here, we present the structure of the N-terminal region of MICAL (MICAL(fd)) determined by x-ray diffraction to 2.0 A resolution. The structure shows that MICAL(fd) is an FAD-containing module structurally similar to aromatic hydroxylases and amine oxidases. In addition, we present biochemical data that show that MICAL(fd) is a flavoenzyme that in the presence of NADPH reduces molecular oxygen to H(2)O(2) (K(m,NAPDH) = 222 microM; k(cat) = 77 sec(-1)), a molecule with known signaling properties. We propose that the H(2)O(2) produced by this reaction may be one of the signaling molecules involved in axon guidance by MICAL. Structure and activity of the axon guidance protein MICAL.,Nadella M, Bianchet MA, Gabelli SB, Barrila J, Amzel LM Proc Natl Acad Sci U S A. 2005 Nov 15;102(46):16830-5. Epub 2005 Nov 7. PMID:16275926 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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