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Biochem/physiol Actions

The RNA polymerase subunit RPB10 displays a high level of conservation across archaea and eukarya and is required for cell viability in yeast. It is a zinc-binding protein with an atypical CX2CXnCC metal binding motif. RPB10 participates in protein-protein interactions with additional components of the polymerase holoenzyme. Experimentally, the binding of RPB10 to an RPB3-RPB11 (or RPAC40-RPAC19 in RNAPI/III) heterodimer is well characterized and persists in both eukaryal and archaeal RNAPs. Binding of RPB10 to this a2-like heterodimer through zinc-mediated hemi-coordination suggests an early role in holoenzyme assembly since the formation of the α2-complex is the first step in the assembly of the prokaryotic RNAPs.

Physical form

Clear and colorless frozen liquid solution

Preparation Note

Use a manual defrost freezer and avoid repeated freeze-thaw cycles. While working, please keep sample on ice.