Table 1:
Protein interactions with mtHsp70 under recent investigation
Protein | Subcellular location | Function | Reference |
---|---|---|---|
IP3R - VDAC1 complex | Mitochondria Associated Membrane | Calcium transport from endoplasmic reticulum to mitochondria | [119] |
HEP1 | Matrix side of Inner mitochondrial membrane | Co-chaperone, stimulates Hsp70 ATPase activity | [120] |
GRPEL1/2 | Mitochondrial matrix, | Co-chaperone, nucleotide exchange factor for Hsp70 | [120] |
TID-1 | Mitochondrial matrix (TID-1S), cytosol (TID-1L) | Co-chaperone, stimulates Hsp70 ATPase activity | [120] |
PERK / IRE1/ ATF6 | ER lumen | Unfolded protein response | [121] |
Lon protease | Mitochondrial matrix | Inhibits apoptosis by stabilizing mtHsp60, stabilizes Hsp70-Hsp60 complex. | [122] |
TLR2 | Plasma membrane | Extracellular Hsp70 and mtHsp60 recognized as DAMP and trigger pro-inflammatory cascade. | [123] |