Below are a collection of excerpts from biomedical research articles. Excerpts are separated by newlines. Your task is to answer a question based these excerpts. Your response should be formatted as a `json` array.

For instance, given excerpts from articles studying breast cancer, and the question "what are some common genes associated with breast cancer?", an answer might be formatted like: ["BRCA1", "BRCA2", "TP53", ...]. Only include answers that are mentioned in the provided exerpts. The array should always have at least one answer; do not respond with an empty array []. Do not include any text in your response other than the answer array.

Context: The paraspeckle component 1 (PSPC1) and non-POU-domain-containing octamer-binding protein (NONO) heterodimer is an essential structural component of paraspeckles,
PSPC1-NONO heterodimer.
Crystallization of a paraspeckle protein PSPC1-NONO heterodimer
difficult heterodimeric complex of two human proteins, paraspeckle component 1 (PSPC1) and non-POU domain-containing octamer-binding protein (NONO), that are involved in gene regulation and the structural integrity of nuclear bodies termed paraspeckles is described.
SFPQ (PSF) and NONO (p54) are nuclear proteins that interact with each other and have diverse roles in nucleic acids metabolism. The SFPQ/NONO heterodimer was previously found to enhance DNA strand break rejoining in vitro.
We identified a heterodimer, p54nrb and PSF,
P54nrb forms a heterodimer with PSP1 that localizes to paraspeckles in an RNA-dependent manner.
e demonstrated that the PSF heterodimer partner, p54nrb (non-POU-domain-containing, octamer binding protein), can also function as a transcription corepressor, independent of PSF.
The PSPC1/NONO heterodimer has a right-handed antiparallel coiled-coil
Structure of the heterodimer of human NONO and paraspeckle protein component 1

Question:
The protein NONO forms heterodimers. With which proteins?
["PSPC1", "SFPQ"]