Table 1 Pairs of candidate interacting proteins were evaluated using the split YFP system for their ability to generate specific fluorescence upon induction of apoptosis in MCF7 cells

From: Utilizing mitochondrial events as biomarkers for imaging apoptosis

Protein pairs

YFP fluorescence

C-YFP

N-YFP

Baseline

Apoptosis

WD(APAF-1)–C-YFP

Cyt c–N-YFP

Low background

No change

XIAP–C-YFP

Smac–N-YFP

Low background

No change

C-YFP–Bax

MitoPLD–N-YFP

Low background

No change

C-YFP–Bax

Cyt c–N-YFP

Low background

High increase in mitochondria

C-YFP–Bax

Smac–N-YFP

Low background

High increase in mitochondria

C-YFP–Bax

N-YFP–Bax

Low background

High increase in mitochondria

Bid–C-YFP

N-YFP–Bax

High background in cytosol

Translocation to mitochondria

  1. Apoptosis was induced by TNFα or etoposide. Fluorescence was followed by live-cell imaging using a DeltaVision system.