Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
WILLIAMS COMPANIES INC
  2. Issuer Name and Ticker or Trading Symbol
Williams Partners L.P. [WPZ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
ONE WILLIAMS CENTER
3. Date of Earliest Transaction (Month/Day/Year)
02/19/2008
(Street)

TULSA, OK 74172
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Units representing limited partner interests 02/19/2008   C   7,000,000 A $ 0 11,613,527 I See Footnotes (1) (2) (3) (5) (6)

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Subordinated Units representing limited partner interests (3) 02/19/2008   C     7,000,000   (3)   (4) Common Units 7,000,000 (2) (3) (3) 0 I See Footnotes (1) (2) (3) (5) (6)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WILLIAMS COMPANIES INC
ONE WILLIAMS CENTER
TULSA, OK 74172
    X    
Williams Energy Services, LLC
ONE WILLIAMS CENTER
TULSA, OK 74172
    X    

Signatures

 /s/ Brian K. Shore, Corporate Secretary, The Williams Companies, Inc.   02/19/2008
**Signature of Reporting Person Date

 /s/ Brian K. Shore, Corporate Secretary, Williams Energy Services, LLC   02/19/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The Williams Companies, Inc. ("TWC") directly or indirectly owns 100% of each of Williams Partners GP LLC (the "General Partner"), Williams Partners Holdings LLC ("Holdings"), Williams Energy Services, LLC ("WES"), Williams Energy, L.L.C ("WE"), Williams Discovery Pipeline LLC ("Williams Pipeline") and MAPCO Inc. ("MAPCO"). MAPCO is the sole member of WE. WES is the sole stockholder of MAPCO and the sole member of Williams Pipeline and the General Partner. The General Partner is the sole general partner of the Partnership, holding a 2% general partner interest in the Partnership, the incentive distribution rights in the Partnership and common units.
(2) At the closing of the Partnership's initial public offering on August 23, 2005, each of Holdings, WES, WE and Williams Pipeline contributed certain assets to the Partnership and in exchange, among other things, (a) Holdings received 2,398,139 subordinated units, (b) WES received 887,450 subordinated units, (c) WE received 2,504,925 subordinated units and (d) Williams Pipeline received 1,209,486 subordinated units.
(3) The 7,000,000 subordinated units converted into common units on a one-for-one basis for no additional consideration on February 19, 2008, after the Partnership satisfied certain financial tests for early termination of the subordination period set forth in the Amended and Restated Agreement of Limited Partnership of the Partnership, as amended (the "Partnership Agreement"). Following conversion of the subordinated units, the General Partner directly held 3,363,527 common units, Holdings directly held 2,826,378 common units, WES directly held 1,045,923 common units, WE directly held 2,952,233 common units and Williams Pipeline directly held 1,425,466 common units.
(4) The subordinated units do not have an expiration date.
(5) TWC indirectly beneficially owns (a) the common units that each of WE, Holdings, WES and Williams Pipeline directly beneficially own and (b) the incentive distribution rights in the Partnership, the 2% general partner interest in the Partnership and the common units held by the General Partner. WES directly beneficially owns the common units noted above and indirectly beneficially owns (a) the common units that each of WE and Williams Pipeline directly beneficially own and (b) the incentive distribution rights in the Partnership, the 2% general partner interest in the Partnership and the common units held by the General Partner.
(6) The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interests therein, and this report shall not be deemed an admission that the reporting persons are beneficial owners of the reported securities for purposes of Section 16 or for any other purpose.

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