LSF ( also known as LBP-1 , UBP , and CP-2 ) has been shown to repress LTR transcription in vitro , but transient expression of LSF has no effect on LTR activity in vivo .
lsf ( also known as lbp-1 , ubp , and cp-2 ) has been shown to repress ltr transcription in vitro , but transient expression of lsf has no effect on ltr activity in vivo .
B-protein_molecule O O O O B-protein_molecule O B-protein_molecule O O B-protein_molecule O O O O O O O O O O O O O O O B-protein_molecule O O O O B-DNA_domain_or_region O O O O