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- PDB-1p7l: S-Adenosylmethionine synthetase complexed with AMPPNP and Met. -

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Basic information

Entry
Database: PDB / ID: 1p7l
TitleS-Adenosylmethionine synthetase complexed with AMPPNP and Met.
ComponentsS-adenosylmethionine synthetaseS-Adenosylmethionine synthetase enzyme
KeywordsTRANSFERASE / S-Adenosylmethionine synthetase / AMPPNP / SAM
Function / homology
Function and homology information


S-adenosylmethionine cycle / methionine adenosyltransferase / methionine adenosyltransferase activity / S-adenosylmethionine biosynthetic process / potassium ion binding / one-carbon metabolic process / magnesium ion binding / ATP binding / identical protein binding / cytosol
Similarity search - Function
GMP Synthetase; Chain A, domain 3 - #10 / S-adenosylmethionine synthetase / S-adenosylmethionine synthetase, N-terminal / S-adenosylmethionine synthetase, central domain / S-adenosylmethionine synthetase, C-terminal / S-adenosylmethionine synthetase, conserved site / S-adenosylmethionine synthetase superfamily / S-adenosylmethionine synthetase, N-terminal domain / S-adenosylmethionine synthetase, central domain / S-adenosylmethionine synthetase, C-terminal domain ...GMP Synthetase; Chain A, domain 3 - #10 / S-adenosylmethionine synthetase / S-adenosylmethionine synthetase, N-terminal / S-adenosylmethionine synthetase, central domain / S-adenosylmethionine synthetase, C-terminal / S-adenosylmethionine synthetase, conserved site / S-adenosylmethionine synthetase superfamily / S-adenosylmethionine synthetase, N-terminal domain / S-adenosylmethionine synthetase, central domain / S-adenosylmethionine synthetase, C-terminal domain / S-adenosylmethionine synthase signature 1. / S-adenosylmethionine synthase signature 2. / GMP Synthetase; Chain A, domain 3 / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER / : / METHIONINE / (DIPHOSPHONO)AMINOPHOSPHONIC ACID / S-ADENOSYLMETHIONINE / S-adenosylmethionine synthase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.5 Å
AuthorsTakusagawa, F. / Komoto, J.
CitationJournal: Biochemistry / Year: 2004
Title: Crystal structure of the s-adenosylmethionine synthetase ternary complex: a novel catalytic mechanism of s-adenosylmethionine synthesis from ATP and MET.
Authors: Komoto, J. / Yamada, T. / Takata, Y. / Markham, G.D. / Takusagawa, F.
History
DepositionMay 2, 2003Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 2, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 29, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software
Revision 1.4Feb 14, 2024Group: Advisory / Data collection ...Advisory / Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_remark / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_remark.text / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Remark 600HETEROGEN S-adenosylmethionine synthetase catalyzes the reaction of: AMPPNP + Met -----> SAM + PPNP ...HETEROGEN S-adenosylmethionine synthetase catalyzes the reaction of: AMPPNP + Met -----> SAM + PPNP In the crystal structure, the authors found that two subunits (A, B) contain the substrates (AMPPNP and Met) and the other two subunits (C, D) have the products (SAM and PPNP) in their active sites. In the PDB file, the authors used ANP as AMPPNP, SAM as S-adenosylmethionine, and PPK as PPNP.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: S-adenosylmethionine synthetase
B: S-adenosylmethionine synthetase
C: S-adenosylmethionine synthetase
D: S-adenosylmethionine synthetase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)170,44224
Polymers167,4694
Non-polymers2,97220
Water36020
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area22530 Å2
ΔGint-143 kcal/mol
Surface area46210 Å2
MethodPISA
Unit cell
Length a, b, c (Å)225.82, 69.13, 118.23
Angle α, β, γ (deg.)90, 90, 90
Int Tables number19
Space group name H-MP212121
DetailsThe enzyme is a homo-tetramer, and the asymmetric unit contains a tetramer.

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Components

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Protein , 1 types, 4 molecules ABCD

#1: Protein
S-adenosylmethionine synthetase / S-Adenosylmethionine synthetase enzyme / Methionine adenosyltransferase / AdoMet synthetase / MAT


Mass: 41867.309 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli)
Gene: METK OR METX OR B2942 OR C3528 OR Z4287 OR ECS3818 OR SF2933
Production host: Escherichia coli (E. coli) / References: UniProt: P0A817, methionine adenosyltransferase

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Non-polymers , 7 types, 40 molecules

#2: Chemical
ChemComp-K / POTASSIUM ION


Mass: 39.098 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: K
#3: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Mg
#4: Chemical ChemComp-ANP / PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER


Mass: 506.196 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H17N6O12P3 / Comment: AMP-PNP, energy-carrying molecule analogue*YM
#5: Chemical ChemComp-MET / METHIONINE / Methionine


Type: L-peptide linking / Mass: 149.211 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C5H11NO2S
#6: Chemical ChemComp-SAM / S-ADENOSYLMETHIONINE / S-Adenosyl methionine


Mass: 398.437 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C15H22N6O5S
#7: Chemical ChemComp-PPK / (DIPHOSPHONO)AMINOPHOSPHONIC ACID


Mass: 256.970 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: H6NO9P3
#8: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 20 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 2.75 Å3/Da / Density % sol: 55.34 %
Crystal growTemperature: 296 K / Method: vapor diffusion, hanging drop / pH: 8
Details: PEG-6000, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 296K
Crystal grow
*PLUS
Temperature: 23 ℃ / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetailsChemical formula
18 %(v/w)PEG80001reservoir
250 mMTris-HCl1reservoirpH8.0
3200 mM1reservoirKCl
41 mMdithiothreitol1reservoir
520 %ethylene glycol1reservoir
650 mMHEPES-K+1drop
720 mg/mlprotein1drop

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Data collection

DiffractionMean temperature: 93 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IIC / Detector: IMAGE PLATE / Date: Jan 1, 2003 / Details: confocal optics
RadiationMonochromator: None / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.5→50 Å / Num. all: 46081 / Num. obs: 46081 / % possible obs: 91 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0
Reflection shellResolution: 2.5→2.6 Å / % possible all: 78

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Processing

Software
NameVersionClassification
SCALEPACKdata scaling
X-PLORmodel building
X-PLOR3.851refinement
X-PLORphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 2.5→10 Å / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.242 4506 RANDOM
Rwork0.213 --
all0.214 40557 -
obs0.214 40557 -
Refinement stepCycle: LAST / Resolution: 2.5→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms11768 0 172 20 11960
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.009
X-RAY DIFFRACTIONx_angle_deg1.36
X-RAY DIFFRACTIONt_dihedral_angle_d27.5
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg27.5

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