Okla. Stat. tit. 12A, § 12A-1-9-341: Bank’s rights and duties with respect to deposit

account.

BANK'S RIGHTS AND DUTIES WITH RESPECT TO DEPOSIT ACCOUNT

Except as otherwise provided in subsection (c) of Section 1-9-

340 of this title, and unless the bank otherwise agrees in a signed

record, a bank's rights and duties with respect to a deposit account

maintained with the bank are not terminated, suspended, or modified

by:

(1) the creation, attachment, or perfection of a security

interest in the deposit account;

(2) the bank's knowledge of the security interest; or

(3) the bank's receipt of instructions from the secured party.