
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15 (d)
OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (date of earliest event reported) June 29, 2007

DEUTSCHE ALT-A SECURITIES MORTGAGE LOAN TRUST, SERIES 2007-OA4 (Exact name of Issuing Entity as specified in its charter)
ACE SECURITIES CORP. (Exact name of Depositor as specified in its charter)
DB STRUCTURED PRODUCTS, INC. (Exact name of Sponsor as specified in its charter)
ACE SECURITIES CORP. (Exact name of Registrant as specified in its charter)

Delaware (State or other jurisdiction of incorporation)	333-141008 (Commission File Number)		56-2088493 (IRS Employer ID Number)
6525 Morrison Boulevard Suite 318 Charlotte, North Carolina		28211
(Address of principal executive offices)		(Zip Code)
Registrant’s Telephone Number, including area code:		(704) 365-0569
No Change (Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


[ ]	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[ ]	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[ ]	Pre-commencement communications pursuant to Rule 14d-2(d) under the Exchange Act (17 CFR 240.14d-2(b))
[ ]	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events

Item 8.01. Other Events.

McKee Nelson LLP has been retained by this Registrant as counsel for its Registration Statement on Form S-3 (Commission File No. 333-141008) in connection with various transactions. Legal opinions by McKee Nelson LLP to be incorporated into the Registration Statement are attached hereto as Exhibit 5.1 and Exhibit 8.1 and the related consent is attached as Exhibit 23.1.

Item 9.01. Financial Statements and Exhibits.

(a)

Not applicable.

(b)

Not applicable.

(c)

Not applicable.

(d)

Exhibits:

5.1

Opinion of McKee Nelson LLP as to legality (including consent of such firm).

8.1

Opinion of McKee Nelson LLP as to certain tax matters (including consent of such firm included in Exhibit 5.1).

23.1 Consent of McKee Nelson LLP (included in Exhibit 5.1).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

ACE SECURITIES CORP.

By: /s/ Evelyn Echevarria

Name: Evelyn Echevarria

Title: Vice President

By: /s/ Doris J. Hearn

Name: Doris J. Hearn

Title: Vice President

Dated: June 29, 2007

EXHIBIT INDEX

Exhibit No.

Description

Page No.

5.1

Opinion of McKee Nelson LLP as to legality (including consent of such firm).

8.1

Opinion of McKee Nelson LLP as to certain tax matters (including consent of such firm included in Exhibit 5.1).

23.1

Consent of McKee Nelson LLP (included in Exhibit 5.1).

Deutsche Alt-A Securities Mortgage Loan Trust, Series 2007-OA4 /DE 8-K