Auxin binding protein: curiouser and curiouser.
Auxin is implicated in a variety of plant developmental processes, yet the molecular mechanism of auxin response remains largely unknown. Auxin binding protein 1 (ABP1) mediates cell expansion and might be involved in cell cycle control. Structural modeling shows that it is a beta-barrel dimer, with the C terminus free to interact with other proteins. We do not know where ABP1 performs its receptor function. Most ABP1 is detected within the endoplasmic reticulum but the evidence indicates that it functions at the plasma membrane. ABP1 is established as a crucial component of auxin signaling, but its precise mechanism remains unclear.
Timpte
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Dept Biological Sciences, University of New Orleans, New Orleans, LA 70148, USA. ctimpte@uno.edu
D000595:Amino Acid Sequence; D002455:Cell Division; D002462:Cell Membrane / Q000378:metabolism; D007210:Indoleacetic Acids / Q000378:metabolism*; D007425:Intracellular Membranes / Q000378:metabolism; D008958:Models, Molecular; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000737:chemistry / Q000378:metabolism*; D011956:Receptors, Cell Surface / Q000737:chemistry / Q000378:metabolism*; D015398:Signal Transduction
D007210:Indoleacetic Acids; D010940:Plant Proteins; D011956:Receptors, Cell Surface; C083846:auxin-binding protein 1