* Reveals corporate commitments at 2.4 billion euros
* Says insurance unit has just under 400 mln sovereign risk
* Confirms bank sovereign exposure at 850 million euros (Adds details, results expectations)
By Lionel Laurent
PARIS, May 7 (Reuters) - French bank Credit Agricole revealed a total exposure to Greece of 3.8 billion euros ($5.1 billion) on Friday, as debt worries continued to pressure the financial sector.
Credit Agricole, which reports first-quarter results next week, was seen as particularly vulnerable to Greece's economic problems because of its unprofitable Greek subsidiary Emporiki in which it bought a two thirds stake in 2006.
The Greek unit, now over 90 percent-owned, has been sapping results for years while the bank's former chief executive, Georges Pauget, said it would not sell out.
Credit Agricole was expected to report a first-quarter net profit of 514 million euros, more than double what it earned in the 2009 period, according to a Reuters poll.
The updated 3.8 billion euro exposure figure included bank sovereign risk of 850 million, insurance sovereign risk of just under 400 million, investment-banking corporate exposure of 2.4 billion and interbank risk exposure of 180 million.
The figure does not include private-sector exposure at Emporiki, the bank said.
Credit Agricole shares were down 1.4 percent in morning trade, in line with declines at larger rivals BNP Paribas and Societe Generale.
BNP has disclosed sovereign exposure to Greece of 5 billion euros and corporate commitments of around 3 billion. Societe Generale's sovereign exposure is 3 billion euros.
Credit Agricole has restructured itself in the aftermath of the financial crisis and has been led by chief executive Jean-Paul Chifflet since March. The group said in February it had seen a good start to the year.
French banks have the biggest international exposure to Greek debt as at the end of 2009 but unlike German banks they have not been asked to participate directly in the rescue package for the debt-stricken country. (Editing by Marcel Michelson and Dan Lalor) ($1 = 0.7453 euro)