DUBAI- State-run Abu Dhabi National Oil Company (ADNOC) has informed its customers of a cut in its crude oil nominations for January in line with OPEC's decision last week to reduce oil supplies, a source familiar with the matter said on Monday.

Nominations for Murban crude grade will be cut by 15 percent, while both Das and Upper Zakum grades will be cut by 5 percent each, the source said.

OPEC and its Russia-led allies agreed on Friday to slash oil production by more than the market had expected despite pressure from U.S. President Donald Trump to reduce the price of crude. 

(Reporting by Rania El Gamal; Editing by Susan Fenton) ((rania.elgamal@thomsonreuters.com; +971 562 160 434; Reuters Messaging: rania.elgamal.reuters.com@reuters.net ; Twitter: https://twitter.com/Rania_ElGamal))