Tex. Property Code § 12.018

If a bank, savings and loan association, savings bank, or other depository institution is placed in receivership or conservatorship by a state or federal agency, instrumentality, or institution, including the Banking Department of Texas, Department of Savings and Mortgage Lending of Texas, Office of the Comptroller of the Currency, Resolution Trust Corporation, Federal Deposit Insurance Corporation, Federal Savings and Loan Insurance Corporation, or their successors, a person at any time may record an affidavit or memorandum of a sale, transfer, purchase, or acquisition agreement between the receiver or conservator of the failed depository institution and another depository institution. If the sale, transfer, purchase, or acquisition agreement transfers or sells an interest in land or in a mortgage or other lien vested according to the real property records in the failed depository institution, a recorded affidavit or memorandum under this section is constructive notice of the transfer or sale. The failure of the affidavit or memorandum to be executed by the record owner or of the affidavit, memorandum, or agreement to contain language of conveyance does not create a defect in title to the land or the lien.