_EC 2.1.1.260 rRNA small subunit pseudouridine methyltransferase Nep1. 7 PDB entries  
EC 2.-.-.- Transferases. [47,929 PDB entries]
EC 2.1.-.- Transferring one-carbon groups. [5,200 PDB entries]
EC 2.1.1.- Methyltransferases. [4,609 PDB entries]
EC 2.1.1.260 rRNA small subunit pseudouridine methyltransferase Nep1. [7 PDB entries]
2v3j

Reaction: pseudouridine(1191) in yeast 18S rRNA + S-adenosyl-L-methionine = N(1)- methylpseudouridine(1191) in yeast 18S rRNA + S-adenosyl-L-homocysteine + H(+).
 

pseudouridine(1191) in yeast 18S rRNA
+
S-adenosyl-L-methionine
= N(1)- methylpseudouridine(1191) in yeast 18S rRNA
+
S-adenosyl-L-homocysteine
+ H(+)
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Comments: This enzyme, which occurs in both prokaryotes and eukaryotes, recognizes specific pseudouridine residues (Psi) in small subunits of ribosomal Rna based on the local rna structure. It recognizes Psi(914) in 16S rRNA from the archaeon Methanocaldococcus jannaschii, Psi(1191) in yeast 18S rRNA, and Psi(1248) in human 18S rRNA.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 7 PDB entries in enzyme class E.C.2.1.1.260

  PDB code Protein
2v3j
The yeast ribosome synthesis factor emg1 alpha beta knot fold methyltransferase
Source: Saccharomyces cerevisiae. Baker's yeast. Organism_taxid: 4932. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (217 residues) CATH domain: 3.40.1280.10
2v3k
The yeast ribosome synthesis factor emg1 alpha beta knot fold methyltransferase
Source: Saccharomyces cerevisiae. Baker's yeast. Organism_taxid: 4932. Expressed in: escherichia coli. Expression_system_taxid: 562.
Chain: A (218 residues) CATH domain: 3.40.1280.10
Bound ligand:   Het Group SAM corresponds to enzyme reactant S-adenosyl-L-methionine
3oii
Crystal structure of saccharomyces cerevisiae nep1/emg1 bound to s- adenosylhomocysteine
Source: Saccharomyces cerevisiae. Yeast. Organism_taxid: 4932. Gene: emg1, nep1, ylr186w, l9470.5. Expressed in: escherichia coli. Expression_system_taxid: 511693.
Chains: A, B (216 residues) CATH domain: 3.40.1280.10
Bound ligand:   Het Group SAH corresponds to enzyme product S-adenosyl-L-homocysteine
3oij
Crystal structure of saccharomyces cerevisiae nep1/emg1 bound to s- adenosylhomocysteine and 2 molecules of cognate RNA
Source: Saccharomyces cerevisiae. Organism_taxid: 4932. Gene: emg1, nep1, ylr186w, l9470.5. Expressed in: escherichia coli. Expression_system_taxid: 511693. Synthetic: yes. Other_details: cognate RNA fragment synthesized to mimic natural RNA substrate
Chains: A, B (211 residues) CATH domain: 3.40.1280.10
Bound ligand:   Het Group SAH is 96.15% similar to enzyme product S-adenosyl-L-homocysteine
3oin
Crystal structure of saccharomyces cerevisiae nep1/emg1 bound to s- adenosylhomocysteine and 1 molecule of cognate RNA
Source: Saccharomyces cerevisiae. Baker's yeast. Organism_taxid: 4932. Gene: emg1, nep1, ylr186w, l9470.5. Expressed in: escherichia coli bl21. Expression_system_taxid: 511693. Synthetic: yes. Other_details: cognate RNA synthesized to mimic natural RNA substrate
Chains: A, B (217 residues) CATH domain: 3.40.1280.10
Bound ligand:   Het Group SAH is 96.15% similar to enzyme product S-adenosyl-L-homocysteine
5jpq
Cryo-em structure of the 90s pre-ribosome
Source: Chaetomium thermophilum. Organism_taxid: 209285. Saccharomyces cerevisiae (strain atcc 204508 / s288c). Baker's yeast. Organism_taxid: 559292. Organism_taxid: 209285
Chains: e, f (211 residues)
5tzs
Architecture of the yeast small subunit processome
Source: Saccharomyces cerevisiae s288c. Yeast. Organism_taxid: 559292. Saccharomyces cerevisiae s288c, saccharomyces cerevisiae s288c. Organism_taxid: 559292
Chains: j, k (211 residues)