The long-term foreign currency deposit ratings of 12 Turkish banks, Akbank T.A.S. (Akbank), Alternatifbank A.S. (Alternatifbank), Denizbank A.S., HSBC Bank A.S. (Turkey), QNB Finansbank A.S. (QNB Finansbank),T.C. Ziraat Bankası A.S. (Ziraat), Türk Ekonomi Bankası A.S. (TEB), Türkiye Garanti Bankası A.S. (Garanti BBVA), Türkiye Halk Bankası A.S. (Halk Bank), Türkiye İş Bankası A.S. (Isbank), Türkiye Vakıflar Bankası T.A.O. (Vakifbank) and Yapı ve Kredi Bankası A.S. (Yapi Kredi), are constrained at Caa1. Moody's has maintained its assumptions of government support unchanged for Turkish banks. 'Moody's credit downgrade shows the gov't is top depressor of Turkish economy' The long-term deposit and issuer ratings -- where applicable -- of eight banks benefit from uplift from government support, reflecting Moody's assumptions of very high or high probability of government support.