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Methylation of DNA polymerase beta by protein arginine methyltransferase 1 regulates its binding to proliferating cell nuclear antigen


El-Andaloussi, N; Valovka, T; Toueille, M; Hassa, P O; Gehrig, P; Covic, M; Hübscher, U; Hottiger, M O (2007). Methylation of DNA polymerase beta by protein arginine methyltransferase 1 regulates its binding to proliferating cell nuclear antigen. FASEB Journal, 21(1):26-34.

Abstract

DNA polymerase beta (pol beta) is a key player in DNA base excision repair (BER). Here, we describe the complex formation of pol beta with the protein arginine methyltransferase 1 (PRMT1). PRMT1 specifically methylated pol beta in vitro and in vivo. Arginine 137 was identified in pol beta as an important target for methylation by PRMT1. Neither the polymerase nor the dRP-lyase activities of pol beta were affected by PRMT1 methylation. However, this modification abolished the interaction of pol beta with proliferating cell nuclear antigen (PCNA). Together, our results provide evidence that PRMT1 methylation of pol beta might play a regulatory role in BER by preventing the involvement of pol beta in PCNA-dependent DNA metabolic events.

Abstract

DNA polymerase beta (pol beta) is a key player in DNA base excision repair (BER). Here, we describe the complex formation of pol beta with the protein arginine methyltransferase 1 (PRMT1). PRMT1 specifically methylated pol beta in vitro and in vivo. Arginine 137 was identified in pol beta as an important target for methylation by PRMT1. Neither the polymerase nor the dRP-lyase activities of pol beta were affected by PRMT1 methylation. However, this modification abolished the interaction of pol beta with proliferating cell nuclear antigen (PCNA). Together, our results provide evidence that PRMT1 methylation of pol beta might play a regulatory role in BER by preventing the involvement of pol beta in PCNA-dependent DNA metabolic events.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Functional Genomics Center Zurich
08 University Research Priority Programs > Systems Biology / Functional Genomics
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:January 2007
Deposited On:18 Dec 2009 13:17
Last Modified:05 Apr 2016 13:35
Publisher:Federation of American Societies for Experimental Biology
ISSN:0892-6638
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1096/fj.06-6194com
PubMed ID:17116746

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