5cuo | pdb_00005cuo

Structure of Rhodopseudomonas palustris PduL - CoA bound form

spinqualitylabelsall models 5cuo, resolution 1.54Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5cuo is a 2 chain structure with sequence from Rhodopseudomonas palustris BisB18. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: COA, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PDUL_RHOPB Involved in 1,2-propanediol (1,2-PD) utilization within the bacterial microcompartment (BMC) dedicated to 1,2-PD degradation by catalyzing the conversion of propanoyl-CoA to propanoyl-phosphate. CoA is regenerated within the pdu BMC (for use by PduP) via this enzyme, although there must also be cofactor transport across the BMC (PubMed:26959993). Directly targeted to the BMC (By similarity). Phosphate is probably the first substrate to bind in the forward direction. CoA is probably the first substrate to bind in the reverse direction, and might bind to the enzyme as the BMC assembles, ensuring cofactor encapsulation (Probable).[UniProtKB:Q9XDN5] Publication Abstract from PubMed Bacterial Microcompartments (BMCs) are proteinaceous organelles that encapsulate critical segments of autotrophic and heterotrophic metabolic pathways; they are functionally diverse and are found across 23 different phyla. The majority of catabolic BMCs (metabolosomes) compartmentalize a common core of enzymes to metabolize compounds via a toxic and/or volatile aldehyde intermediate. The core enzyme phosphotransacylase (PTAC) recycles Coenzyme A and generates an acyl phosphate that can serve as an energy source. The PTAC predominantly associated with metabolosomes (PduL) has no sequence homology to the PTAC ubiquitous among fermentative bacteria (Pta). Here, we report two high-resolution PduL crystal structures with bound substrates. The PduL fold is unrelated to that of Pta; it contains a dimetal active site involved in a catalytic mechanism distinct from that of the housekeeping PTAC. Accordingly, PduL and Pta exemplify functional, but not structural, convergent evolution. The PduL structure, in the context of the catalytic core, completes our understanding of the structural basis of cofactor recycling in the metabolosome lumen. The Structural Basis of Coenzyme A Recycling in a Bacterial Organelle.,Erbilgin O, Sutter M, Kerfeld CA PLoS Biol. 2016 Mar 9;14(3):e1002399. doi: 10.1371/journal.pbio.1002399., eCollection 2016 Mar. PMID:26959993 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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