Recognition of RNA Polymerase II C-terminal domain by RPRD2

LINHARTOVÁ, Kateřina, Jakub MACOŠEK, Veronika JANŠTOVÁ, Eliška ŠMIŘÁKOVÁ, Karel KUBÍČEK and Richard ŠTEFL. Recognition of RNA Polymerase II C-terminal domain by RPRD2. In CEITEC PhD Conference. 2020.

Basic information

• Original name: Recognition of RNA Polymerase II C-terminal domain by RPRD2
• Authors: LINHARTOVÁ, Kateřina (203 Czech Republic, belonging to the institution), Jakub MACOŠEK (203 Czech Republic, belonging to the institution), Veronika JANŠTOVÁ (203 Czech Republic), Eliška ŠMIŘÁKOVÁ (203 Czech Republic, belonging to the institution), Karel KUBÍČEK (203 Czech Republic) and Richard ŠTEFL (203 Czech Republic, belonging to the institution).
• Edition: CEITEC PhD Conference, 2020.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10608 Biochemistry and molecular biology
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• RIV identification code: RIV/00216224:14740/20:00118409
• Organization unit: Central European Institute of Technology
• Keywords in English: RNA Polymerase II C-terminal domain; RPRD2
• Tags: rivok

Abstract

The largest subunit of human RNA Polymerase II contains highly flexible C-terminal domain (CTD) that is composed of 52 heptapeptide repeats (first half of repeats with consensus sequence YSPTSPS and second half largely degenerated in sequence). Several CTDs canonical and non-canonical residues can be subjects of post-translational modifications. Tyrosine, threonine and serine residues undergo dynamic phosphorylation/dephosphorylation resulting in specific phosphorylation patterns throughout different stages of transcription cycle. These phosphorylation patterns are recognized by various transcription and processing factors during the transcription cycle. Therefore, CTD plays an important role in the regulation of transcription and coupling of transcription to post-transcriptional processes such as mRNA processing. In this study, we show that human transcription factor, RPRD2, recognizes specifically pSer2 or pThr4 phosphorylated forms of CTD via its CTD-interacting domain (CID) in a similar way to its yeast homologue, Rtt103. The interaction of RPRD2 CID with pSer2 phosphorylated CTD is further enhanced by additional phosphorylation on pSer7. To provide mechanistic details of the interaction between RPRD2 CID and pSer2,7 CTD, the solution structure was obtained using NMR spectroscopy. pSer 2 and pTh4 phosphomarks occur mainly during the late elongation and termination. RPRD2s preference for these two phosphomarks suggests possible involvement of RPRD2 in transcription termination.

Links

• LQ1601, research and development project: Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR