4OX9

Crystal structure of the aminoglycoside resistance methyltransferase NpmA bound to the 30S ribosomal subunit


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8035 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Molecular recognition and modification of the 30S ribosome by the aminoglycoside-resistance methyltransferase NpmA.

Dunkle, J.A.Vinal, K.Desai, P.M.Zelinskaya, N.Savic, M.West, D.M.Conn, G.L.Dunham, C.M.

(2014) Proc.Natl.Acad.Sci.USA 111: 6275-6280

  • DOI: 10.1073/pnas.1402789111

  • PubMed Abstract: 
  • Aminoglycosides are potent, broad spectrum, ribosome-targeting antibacterials whose clinical efficacy is seriously threatened by multiple resistance mechanisms. Here, we report the structural basis for 30S recognition by the novel plasmid-mediated am ...

    Aminoglycosides are potent, broad spectrum, ribosome-targeting antibacterials whose clinical efficacy is seriously threatened by multiple resistance mechanisms. Here, we report the structural basis for 30S recognition by the novel plasmid-mediated aminoglycoside-resistance rRNA methyltransferase A (NpmA). These studies are supported by biochemical and functional assays that define the molecular features necessary for NpmA to catalyze m(1)A1408 modification and confer resistance. The requirement for the mature 30S as a substrate for NpmA is clearly explained by its recognition of four disparate 16S rRNA helices brought into proximity by 30S assembly. Our structure captures a "precatalytic state" in which multiple structural reorganizations orient functionally critical residues to flip A1408 from helix 44 and position it precisely in a remodeled active site for methylation. Our findings provide a new molecular framework for the activity of aminoglycoside-resistance rRNA methyltransferases that may serve as a functional paradigm for other modification enzymes acting late in 30S biogenesis.


    Organizational Affiliation

    Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S2
B
256Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsB (rps2)
Find proteins for P80371 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80371
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S3
C
239Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsC (rps3)
Find proteins for P80372 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80372
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S4
D
208Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsD (rps4)
Find proteins for P80373 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80373
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S5
E
161Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsE
Find proteins for Q5SHQ5 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHQ5
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S6
F
101Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsF
Find proteins for Q5SLP8 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SLP8
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S7
G
155Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsG (rps7)
Find proteins for P17291 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P17291
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S8
H
138Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsH
Find proteins for P0DOY9 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P0DOY9
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S9
I
128Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsI (rps9)
Find proteins for P80374 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80374
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S10
J
104Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsJ
Find proteins for Q5SHN7 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHN7
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S11
K
129Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsK (rps11)
Find proteins for P80376 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80376
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S12
L
131Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsL
Find proteins for Q5SHN3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHN3
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S13
M
126Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsM (rps13)
Find proteins for P80377 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80377
Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S14 type Z
N
60Thermus aquaticusGene Names: rpsZ (rpsN)
Find proteins for A0A0N0BLP2 (Thermus aquaticus)
Go to UniProtKB:  A0A0N0BLP2
Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S15
O
88Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsO
Find proteins for Q5SJ76 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SJ76
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S16
P
88Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsP
Find proteins for Q5SJH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SJH3
Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S17
Q
104Thermus aquaticusGene Names: rpsQ
Find proteins for A0A0N0BLS5 (Thermus aquaticus)
Go to UniProtKB:  A0A0N0BLS5
Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S18
R
88Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsR
Find proteins for Q5SLQ0 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SLQ0
Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S19
S
92Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsS
Find proteins for Q5SHP2 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHP2
Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S20
T
106Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsT (rps20)
Find proteins for P80380 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80380
Entity ID: 21
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein Thx
V
26Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Gene Names: rpsU
Find proteins for Q5SIH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SIH3
Entity ID: 22
MoleculeChainsSequence LengthOrganismDetails
16S rRNA (adenine(1408)-N(1))-methyltransferase
Y
222Escherichia coliGene Names: npmA
EC: 2.1.1.180
Find proteins for A8C927 (Escherichia coli)
Go to UniProtKB:  A8C927
Entity ID: 1
MoleculeChainsLengthOrganism
16S rRNAA1513Thermus thermophilus
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
D, N
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SFG
Query on SFG

Download SDF File 
Download CCD File 
Y
SINEFUNGIN
ADENOSYL-ORNITHINE
C15 H23 N7 O5
LMXOHSDXUQEUSF-YECHIGJVSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, E, N
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8035 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.233 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 403.520α = 90.00
b = 403.520β = 90.00
c = 176.610γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-09
    Type: Initial release
  • Version 1.1: 2014-04-30
    Type: Database references
  • Version 1.2: 2014-05-21
    Type: Data collection
  • Version 1.3: 2014-10-01
    Type: Database references
  • Version 1.4: 2015-09-30
    Type: Data collection