Five or more persons of full age and of good moral and sound business character may organize themselves into a banking corporation. Banking corporations may be created for the purpose of conducting and carrying on a bank and trust company business, such trust company business to be limited as herein provided, and to establish offices of loan and deposit to be known as savings banks, or to establish banks having departments for carrying on all of the above classes of business; and said banking corporations may, under the provisions of the banking laws of Mississippi, establish branch banks and branch offices within territorial limitations as hereinafter provided in Chapter 7 of this title. No private individual, or partnership, or association of persons other than a corporation shall be allowed to conduct any type of banking business within this state.