Type IIS restriction endonuclease FokI is a member of an unusual class of bipartite restriction enzymes that recognises the double- stranded DNA sequence 5'-GGATG-3' and cleave DNA phosphodiester groups 9 base pairs away on this strand and 13 base pa ...
Type IIS restriction endonuclease FokI is a member of an unusual class of bipartite restriction enzymes that recognises the double- stranded DNA sequence 5'-GGATG-3' and cleave DNA phosphodiester groups 9 base pairs away on this strand and 13 base pairs away on the complementary strand [1,2]. FokI contains amino- and carboxy- terminal domains corresponding to the DNA-recognition and cleavage functions, respectively. The recognition domain is made of three smaller subdomains (D1, D2 and D3) which are evolutionarily related to the helix-turn-helix-containing DNA-binding domain of the catabolite gene activator protein CAP [1]. This is the D3 domain which is most similar to CAP and related proteins such as histone H5, HNF-3gamma and the biotin operon repressor (BirA). Despite its similarity, D3 barely touches the DNA [1].
Members of this family are predominantly found in prokaryotic restriction endonuclease FokI, and adopt a structure consisting of an alpha/beta/alpha core containing a five-stranded beta-sheet. They recognise the double-stranded DNA sequence 5'-GGATG- ...
Members of this family are predominantly found in prokaryotic restriction endonuclease FokI, and adopt a structure consisting of an alpha/beta/alpha core containing a five-stranded beta-sheet. They recognise the double-stranded DNA sequence 5'-GGATG-3' and cleave DNA phosphodiester groups 9 base pairs away on this strand and 13 base pairs away on the complementary strand [1]. This entry represents the C-terminal cleavage domain of FokI.
Type IIS restriction endonuclease FokI is a member of an unusual class of bipartite restriction enzymes that recognises the double-stranded DNA sequence 5'-GGATG-3' and cleave DNA phosphodiester groups 9 base pairs away on this strand and 13 base pai ...
Type IIS restriction endonuclease FokI is a member of an unusual class of bipartite restriction enzymes that recognises the double-stranded DNA sequence 5'-GGATG-3' and cleave DNA phosphodiester groups 9 base pairs away on this strand and 13 base pairs away on the complementary strand [1]. FokI contains amino- and carboxy-terminal domains corresponding to the DNA- recognition and cleavage functions, respectively. The recognition domain is made of three smaller subdomains (D1, D2 and D3) which are evolutionarily related to the helix-turn-helix- containing DNA-binding domain of the catabolite gene activator protein CAP [3]. This entry represents the subdomain D1 of FokI. Subdomain D1 of the recognition domain covers the DNA major groove, recognizing base pairs at the 3' end of the recognition sequence (GGATG) [3].