One white adipocyte: move cell size or droplet fill to see the stored lipid budget.
Lipid stored (droplet volume)
268,083 um3 Budget 321,555 um3. Budget given with the twin: the bar is the share of it this cell uses.
Triacylglycerol stored in the single unilocular lipid droplet. Capacity is the total cell volume; a cell at 100 percent is all lipid with no cytoplasm, which does not occur in vivo. Overshoot (droplet wider than cell) indicates a geometry error in the declared numbers.
source 1source 2,
Cell volume
321,555 um3
65,450 to 1,767,146 um3 propagated
Droplet volume
268,083 um3
33,510 to 1,596,256 um3 propagated
Lipid fraction of cell volume
83.4 %
1.9 to 2,439 % propagated
Droplet surface area
20,106 um2
5,027 to 66,052 um2 propagated
Cytoplasm rim width (radial)
2.5 um
-47.5 to 55 um propagated
Withheld
Perilipin-1 coat thickness
No sourced measurement of PLIN1 layer thickness on the human adipocyte lipid droplet surface found; the coat is a monolayer protein scaffold estimated at 10 to 20 nm but no primary measurement paper with a verified PMID was retrieved
Lipid mass stored
Converting droplet volume to TAG mass requires the TAG density (approximately 0.86 g/mL) and the purity assumption (near 100 percent TAG); no primary measurement of per-cell TAG mass in human adipocytes with a verified PMID was retrieved to source the density figure