7b2b | pdb_00007b2b

Solution structure of a non-covalent extended docking domain complex of the Pax NRPS: PaxA T1-CDD/PaxB NDD

spinqualitylabelsall models 7b2b Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7b2b is a 2 chain structure with sequence from Xenorhabdus cabanillasii and Xenorhabdus cabanillasii JM26. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A3D9UGN9_9GAMM Publication Abstract from PubMed Non-ribosomal peptide synthetases (NRPS) produce natural products from amino acid building blocks. They often consist of multiple polypeptide chains which assemble in a specific linear order via specialized N- and C-terminal docking domains ((N/C) DDs). Typically, docking domains function independently from other domains in NRPS assembly. Thus, docking domain replacements enable the assembly of "designer" NRPS from proteins that normally do not interact. The multiprotein "peptide-antimicrobial-Xenorhabdus" (PAX) peptide-producing PaxS NRPS is assembled from the three proteins PaxA, PaxB and PaxC. Herein, we show that the small (C) DD of PaxA cooperates with its preceding thiolation (T1 ) domain to bind the (N) DD of PaxB with very high affinity, establishing a structural and thermodynamical basis for this unprecedented docking interaction, and we test its functional importance in vivo in a truncated PaxS assembly line. Similar docking interactions are apparently present in other NRPS systems. Cooperation between a T Domain and a Minimal C-Terminal Docking Domain to Enable Specific Assembly in a Multiprotein NRPS.,Watzel J, Duchardt-Ferner E, Sarawi S, Bode HB, Wohnert J Angew Chem Int Ed Engl. 2021 Jun 14;60(25):14171-14178. doi:, 10.1002/anie.202103498. Epub 2021 May 14. PMID:33876501 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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