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Crystal structure of chemically synthesized human anaphylatoxin C3a
Biology and Chemistry Report
  •   Structure Details   Hide

    Structure Keywords

    Keywords IMMUNE SYSTEM
    Text disulfide-rich, alpha-helical bundle, drumstick, complement system, third component of complement (C3), local inflammatory process mediator, smooth muscle contraction induction, vascular permeability increase, mast cell histamine release, C3a receptor, GPCR, extracellular, blood plasma, IMMUNE SYSTEM

    Polymeric Molecules

    Chain A
    Description Complement C3 
    Fragment C3a anaphylatoxin (UNP residues 672-748) 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 9114.8 
    Source Method synthetic  

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    MPD  (4S)-2-METHYL-2,4-PENTANEDIOL  C6 H14 O2   118.17  View 
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A CO3_HUMAN P01024     

    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A
    GO ID   Ontology GO Term Definition
    6954   Inflammatory Response  The Immediate Defensive Reaction (by Vertebrate Tissue) to Infection or Injury Caused by Chemical or Physical Agents. the Process Is Characterized by Local Vasodilation Extravasation of Plasma Into Intercellular Spaces and Accumulation of White Blood Cells and Macrophages. 
    6956   Complement Activation  Any Process Involved in the Activation of Any of the Steps of the Complement Cascade Which Allows For the Direct Killing of Microbes the Disposal of Immune Complexes and the Regulation of Other Immune Processes; the Initial Steps of Complement Activation Involve One of Three Pathways the Classical Pathway the Alternative Pathway and the Lectin Pathway All of Which Lead to the Terminal Complement Pathway. 
    5576   Extracellular Region  The Space External to the Outermost Structure of a Cell. For Cells Without External Protective or External Encapsulating Structures This Refers to Space Outside of the Plasma Membrane. This Term Covers the Host Cell Environment Outside an Intracellular Parasite.