The phrase "a component of the polycomb group" is correct and usable in written English.
It can be used in scientific or academic contexts when discussing elements or parts of the polycomb group, which is a group of proteins involved in gene regulation.
Example: "The study focused on identifying a component of the polycomb group that plays a crucial role in maintaining stem cell identity."
Alternatives: "an element of the polycomb group" or "a part of the polycomb group".
Hence, when the arrest of endosperm development is released by the mutation of FIE, a component of the Polycomb group complex, we observed at least a partial rescue of the paternally conferred fbl17 seed abortion phenotype.
Seed abortion can, however, be overcome by mutations in FIE, a component of the Polycomb group complex, overall resembling loss-of-function mutations in the A. thaliana cyclin-dependent kinase CDKA 1.
EZH2 is a component of the polycomb group complex, which is vital for hematopoietic cell development.
Other specifically pulled-down proteins involved in transcriptional regulation included Polycomb group RING protein 5 (a component of the Polycomb group PcG multiprotein repressive complex), Kruppel-like factor 4 (a transcription factor shown to interact with HDAC2), and cyclin-dependent kinase 9 (a component of the P-TEFb factor which activates RNA Pol II for transcription).
We used immunostaining for Eed, a component of the PRC2 polycomb group complex, to detect epigenetic marking indicative of Xi (Silva et al., 2003).
Likewise, EZH2, the component of the polycomb group (PcG) responsible for catalyzing histone 3 lysine 27 tri-methylation, a repressive chromatin mark (54), is among our candidate genes.
Belonging to the family of Polycomb group proteins (which play the role of epigenetic regulators during the embryonic period), the Bmi1 is a component of the Polycomb Repressive Complex 1 (PRC1) found in undifferentiated neural stem cells.
Working with human embryonic stem cells, the Lee-Young team mapped where a component of the polycomb complex was attached to the chromatin.
Ezh2, a component of the polycomb repressive complex 2 (PRC2), has been reported to negatively regulate Bim expression29,30.
Bmi-1 functions as a component of the polycomb repressive protein complex [7] [8].
EZH2 is a component of the polycomb repressive complex 2 (PRC2), which is involved in epigenetic regulation of cell homeostasis.
