3kds | pdb_00003kds

apo-FtsH crystal structure

spinqualitylabelsall models 3kds, resolution 2.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3kds is a 3 chain structure with sequence from Atcc 43589. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: NHX, ZN Related: 2ce7, 2cea Gene: FtsH (ATCC 43589) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [FTSH_THEMA] Acts as a processive, ATP-dependent zinc metallopeptidase for both cytoplasmic and membrane proteins. Plays a role in the quality control of integral membrane proteins.[HAMAP-Rule:MF_01458] 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 The hexameric membrane-spanning ATP-dependent metalloprotease FtsH is universally conserved in eubacteria, mitochondria, and chloroplasts, where it fulfills key functions in quality control and signaling. As a member of the self-compartmentalizing ATPases associated with various cellular activities (AAA+ proteases), FtsH converts the chemical energy stored in ATP via conformational rearrangements into a mechanical force that is used for substrate unfolding and translocation into the proteolytic chamber. The crystal structure of the ADP state of Thermotoga maritima FtsH showed a hexameric assembly consisting of a 6-fold symmetric protease disk and a 2-fold symmetric AAA ring. The 2.6 A resolution structure of the cytosolic region of apo-FtsH presented here reveals a new arrangement where the ATPase ring shows perfect 6-fold symmetry with the crucial pore residues lining an open circular entrance. Triggered by this conformational change, a substrate-binding edge beta strand appears within the proteolytic domain. Comparison of the apo- and ADP-bound structure visualizes an inward movement of the aromatic pore residues and generates a model of substrate translocation by AAA+ proteases. Furthermore, we demonstrate that mutation of a conserved glycine in the linker region inactivates FtsH. The crystal structure of apo-FtsH reveals domain movements necessary for substrate unfolding and translocation.,Bieniossek C, Niederhauser B, Baumann UM Proc Natl Acad Sci U S A. 2009 Dec 22;106(51):21579-84. Epub 2009 Dec 2. PMID:19955424 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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