ISTANBUL (Reuters) - Turkish President Tayyip Erdogan has appointed himself chairman of the country's sovereign wealth fund and completely changed its board, naming Finance Minister Berat Albayrak as his deputy, the country's Official Gazette said on Wednesday.

The revamp was the latest in a series of steps Erdogan has taken to assume new powers since he won a presidential election in June, heralding the move to an executive presidency which grants sweeping authority.

The $50 billion-worth wealth fund (TVF) was set up in 2016 by the government to develop and increase the value of Turkey's strategic assets and provide resources for investment.

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Erdogan appointed as the fund's general manager Zafer Sonmez, head of the Turkey regional office of the Malaysian sovereign wealth fund Khazanah Nasional. Albayrak and Sonmez were among the seven members in the Turkish fund's new board.

The government has transferred to the TVF stakes worth billions of dollars of state assets, including stakes in flag carrier Turkish Airlines, major banks and fixed-line operator Turk Telekom.

Erdogan said last September the fund was to be reorganised after dismissing its chairman over its failure to meet targets.

The subsequent acting chairman Himmet Karadag told Reuters in December it was in talks with China's ICBC, Singapore's wealth fund TEMASEK and the Russian Direct Investment Fund on cooperation in bilateral project financing.