2Z6Q
Ternary structure of Arg165Ala M.HhaI C5-Cytosine DNA methyltransferase with unmodified DNA and AdoHcy
Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0003677 | molecular_function | DNA binding |
| A | 0003886 | molecular_function | DNA (cytosine-5-)-methyltransferase activity |
| A | 0008168 | molecular_function | methyltransferase activity |
| A | 0009307 | biological_process | DNA restriction-modification system |
| A | 0032259 | biological_process | methylation |
| A | 0051719 | molecular_function | DNA (cytosine-5-)-methyltransferase activity, acting on CpN substrates |
| A | 0051720 | molecular_function | DNA (cytosine-5-)-methyltransferase activity, acting on CpNpG substrates |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 15 |
| Details | BINDING SITE FOR RESIDUE DCZ A 427 |
| Chain | Residue |
| A | CYS81 |
| A | ASN304 |
| A | HOH346 |
| A | HOH383 |
| D | DG426 |
| E | HOH347 |
| E | DG428 |
| A | SER85 |
| A | GLU119 |
| A | ASN120 |
| A | VAL121 |
| A | ARG163 |
| A | GLU164 |
| A | ALA165 |
| A | THR250 |
| site_id | AC2 |
| Number of Residues | 20 |
| Details | BINDING SITE FOR RESIDUE SAH A 328 |
| Chain | Residue |
| A | PHE18 |
| A | ALA19 |
| A | LEU21 |
| A | GLY23 |
| A | ASN39 |
| A | GLU40 |
| A | TRP41 |
| A | ASP42 |
| A | ASP60 |
| A | ILE61 |
| A | GLY78 |
| A | PRO80 |
| A | LEU100 |
| A | ASN304 |
| A | SER305 |
| A | HOH338 |
| A | HOH345 |
| A | HOH377 |
| A | HOH385 |
| D | DT421 |
Functional Information from PROSITE/UniProt
| site_id | PS00094 |
| Number of Residues | 13 |
| Details | C5_MTASE_1 C-5 cytosine-specific DNA methylases active site. DiLcaGfPCqAFS |
| Chain | Residue | Details |
| A | ASP73-SER85 |
| site_id | PS00095 |
| Number of Residues | 19 |
| Details | C5_MTASE_2 C-5 cytosine-specific DNA methylases C-terminal signature. KqfGNSVvInVlqyIaynI |
| Chain | Residue | Details |
| A | LYS300-ILE318 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | ACT_SITE: ACT_SITE => ECO:0000305|PubMed:7899082 |
| Chain | Residue | Details |
| A | CYS81 |
Catalytic Information from CSA
| site_id | CSA1 |
| Number of Residues | 2 |
| Details | Annotated By Reference To The Literature 1mht |
| Chain | Residue | Details |
| A | CYS81 | |
| A | GLU119 |
| site_id | MCSA1 |
| Number of Residues | 4 |
| Details | M-CSA 293 |
| Chain | Residue | Details |
| A | CYS81 | covalently attached, hydrogen bond acceptor, nucleofuge, nucleophile, polar interaction, proton acceptor, proton donor |
| A | GLU119 | attractive charge-charge interaction, electrostatic stabiliser, hydrogen bond acceptor, increase electrophilicity |
| A | ARG163 | attractive charge-charge interaction, electrostatic stabiliser, hydrogen bond donor, increase electrophilicity |
| A | ALA165 | attractive charge-charge interaction, electrostatic stabiliser, hydrogen bond donor, increase electrophilicity |
