Vacuolar transporter chaperone 2 - P43585 (VTC2_YEAST)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P43585: 1
Component of the vacuolar transporter chaperone (VTC) complex, which plays a role in vacuolar membrane fusion (PubMed:11823419). Binds inositol hexakisphosphate (Ins6P) and similar inositol polyphosphates, such as 5-diphospho-inositol pentakisphosphate (5-InsP7); these are important intracellular signaling molecules (PubMed:27080106). Inositol polyphosphate binding promotes vacuolar polyphosphate synthesis (PubMed:27080106). UniProt
Pathway Maps
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Subunit Structure
The VTC complex is an integral membrane heterooligomer composed of VTC1, VTC2, VTC3 and VTC4. The complex interacts with the v-SNARE NYV1 and with the V(0) subunit of V-ATPase VPH1. UniProt
The SPX domain has very high affinity for inositol polyphosphates, such as myo-inositol hexakisphosphate and 5-diphospho-myo-inositol pentakisphosphate (5-InsP7), and moderate affinity for inorganic pyrophosphate. Its affinity for inorganic phosphate is tow to three orders of magnitude lower. UniProt
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