_EC 2.1.1.170 16S rRNA (guanine(527)-N(7))-methyltransferase. 5 PDB entries  
EC 2.-.-.- Transferases. [17,949 PDB entries]
EC 2.1.-.- Transferring one-carbon groups. [1,711 PDB entries]
EC 2.1.1.- Methyltransferases. [1,381 PDB entries]
EC 2.1.1.170 16S rRNA (guanine(527)-N(7))-methyltransferase. [5 PDB entries]    
1jsx

Reaction: S-adenosyl-L-methionine + guanine(527) in 16S rRNA = S-adenosyl-L- homocysteine + N(7)-methylguanine(527) in 16S rRNA.
 


S-adenosyl-L-methionine
+ guanine(527) in 16S rRNA
=
S-adenosyl-L- homocysteine
+ N(7)-methylguanine(527) in 16S rRNA
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Comments: The enzyme specifically methylates guanine(527) at N(7) in 16S rRNA.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 5 PDB entries in enzyme class E.C.2.1.1.170

  PDB code Protein
1jsx
Crystal structure of the escherichia coli glucose-inhibited division protein b (gidb)
Source: Escherichia coli. Organism_taxid: 562. Gene: gidb. Expressed in: escherichia coli bl21. Expression_system_taxid: 511693.
Chain: A (193 residues) CATH domain: 3.40.50.150
3g88
T. Thermophilus 16s rrna g527 methyltransferase in complex with adomet in space group p61
Source: Thermus thermophilus. Organism_taxid: 300852. Strain: hb8. Gene: gidb, rsmg, ttha1971. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chains: A, B (239 residues) CATH domain: 3.40.50.150
3g89
T. Thermophilus 16s rrna g527 methyltransferase in complex with adomet and amp in space group p61
Source: Thermus thermophilus. Organism_taxid: 300852. Strain: hb8. Gene: gidb, rsmg, ttha1971. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chains: A, B (239 residues) CATH domain: 3.40.50.150
3g8a
T. Thermophilus 16s rrna g527 methyltransferase in complex w in space group p61
Source: Thermus thermophilus. Organism_taxid: 300852. Strain: hb8. Gene: gidb, rsmg, ttha1971. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chains: A, B, C, D, E, F (236 residues) CATH domain: 3.40.50.150
3g8b
T. Thermophilus 16s rrna g527 methyltransferase in complex with adomet in space group i222
Source: Thermus thermophilus. Organism_taxid: 300852. Strain: hb8. Gene: gidb, rsmg, ttha1971. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chains: A, B (241 residues) CATH domain: 3.40.50.150