Final answer:
TRF2 is the protein that shows sequence similarity to lamin proteins and conveys affinity for the nuclear matrix.
Step-by-step explanation:
The protein that shows sequence similarity to lamin proteins and is thought to convey affinity for the nuclear matrix is TRF2. TRF2, or telomeric repeat binding factor 2, is a protein involved in protecting and regulating the ends of chromosomes called telomeres. It binds to telomeres and helps maintain their stability and function. The sequence similarity between TRF2 and lamin proteins suggests a potential interaction with the nuclear matrix.