8i6z

Crystal structure of apo-form of malonyl-CoA reductase C-domain from Chloroflexus aurantiacus

spinqualitylabelsall models 8i6z, resolution 1.95Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8i6z is a 1 chain structure with sequence from Chloroflexus aurantiacus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.95Å Ligands: GOL, TLA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A9WIU3_CHLAA Publication Abstract from PubMed The platform chemical 3-hydroxypropionic acid is used to synthesize various valuable materials, including bioplastics. Bifunctional malonyl-CoA reductase is a key enzyme in 3-hydroxypropionic acid biosynthesis as it catalyzes the two-step reduction of malonyl-CoA to malonate semialdehyde to 3-hydroxypropionic acid. Here, we report the cryo-EM structure of a full-length malonyl-CoA reductase protein from Chloroflexus aurantiacus (CaMCR(Full)). The EM model of CaMCR(Full) reveals a tandem helix architecture comprising an N-terminal (CaMCR(ND)) and a C-terminal (CaMCR(CD)) domain. The CaMCR(Full) model also revealed that the enzyme undergoes a dynamic domain movement between CaMCR(ND) and CaMCR(CD) due to the presence of a flexible linker between these two domains. Increasing the flexibility and extension of the linker resulted in a twofold increase in enzyme activity, indicating that for CaMCR, domain movement is crucial for high enzyme activity. We also describe the structural features of CaMCR(ND) and CaMCR(CD). This study reveals the protein structures underlying the molecular mechanism of CaMCR(Full) and thereby provides valuable information for future enzyme engineering to improve the productivity of 3-hydroxypropionic acid. Cryo-EM structure of bifunctional malonyl-CoA reductase from Chloroflexus aurantiacus reveals a dynamic domain movement for high enzymatic activity.,Ahn JW, Kim S, Hong J, Kim KJ Int J Biol Macromol. 2023 Jul 1;242(Pt 1):124676. doi: , 10.1016/j.ijbiomac.2023.124676. Epub 2023 May 3. PMID:37146856 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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