Section 45-2-612 - Endorsement and signature guaranty(a) Any bank may assume secondary liability as an endorser of a negotiable or nonnegotiable instrument that it owns or has received for collection or that of the guarantor of the genuineness of a signature.(b) A bank may disclaim all or any part of the foregoing obligation in its guaranty; however, nothing in this section shall conflict with the Uniform Commercial Code, compiled in title 47, and the Uniform Commercial Code shall govern.Acts 1969, ch. 36, § 1 (3.247); T.C.A., § 45-441.