Show PDB file:   
         Plain Text   HTML   (compressed file size)
QuickSearch:   
by PDB,NDB,UniProt,PROSITE Code or Search Term(s)  
(-)Asym./Biol. Unit
(-)Asym./Biol. Unit - sites
collapse expand < >
Image Asym./Biol. Unit
Asym./Biol. Unit  (Jmol Viewer)
Image Asym./Biol. Unit - sites
Asym./Biol. Unit - sites  (Jmol Viewer)

(-) Description

Title :  STRUCTURE OF ACETYLCHOLINESTERASE COMPLEXED WITH HUPERZINE B AT 2.35A RESOLUTION
 
Authors :  H. Dvir, M. Harel, H. L. Jiang, I. Silman, J. L. Sussman
Date :  07 Nov 01  (Deposition) - 29 Aug 02  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.35
Chains :  Asym./Biol. Unit :  A
Keywords :  Hydrolase, Cholinesterase, Huperzine A, Huperzine B, Alzheimer'S Disease (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  H. Dvir, H. L. Jiang, D. M. Wong, M. Harel, M. Chetrit, X. C. He, G. Y. Jin, G. L. Yu, X. C. Tang, I. Silman, D. L. Bai, J. L. Sussman
X-Ray Structures Of Torpedo Californica Acetylcholinesterase Complexed With (+)-Huperzine A And (-)-Huperzine B: Structural Evidence For An Active Site Rearrangement
Biochemistry V. 41 10810 2002
PubMed-ID: 12196020  |  Reference-DOI: 10.1021/BI020151+

(-) Compounds

Molecule 1 - ACETYLCHOLINESTERASE
    Chains: A
    EC Number: 3.1.1.7
    Fragment: RESIDUES 22-558
    Organ: ELECTRIC ORGAN
    Organism Common: PACIFIC ELECTRIC RAY
    Organism Scientific: TORPEDO CALIFORNICA
    Organism Taxid: 7787
    Other Details: HUPERZINE B BOUND AT THE BOTTOM OF THE ACTIVE SITE GORGE
    Other Details - Source: PURIFIED FROM THE ELECTRIC ORGAN
    Synonym: ACHE
    Tissue: ELECTROPLAQUE
    Variant: G2 FORM

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 3)

Asymmetric/Biological Unit (2, 3)
No.NameCountTypeFull Name
1HUB1Ligand/IonHUPERZINE B
2NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN A:59 , SER A:61BINDING SITE FOR RESIDUE NAG A1536
2AC2SOFTWAREASN A:416BINDING SITE FOR RESIDUE NAG A1537
3AC3SOFTWARETRP A:84 , GLY A:117 , GLY A:118 , GLY A:119 , TYR A:121 , GLY A:123 , TYR A:130 , GLU A:199 , SER A:200 , PHE A:290 , PHE A:330 , HIS A:440 , HOH A:2081 , HOH A:2289BINDING SITE FOR RESIDUE HUB A1538

(-) SS Bonds  (3, 3)

Asymmetric/Biological Unit
No.Residues
1A:67 -A:94
2A:254 -A:265
3A:402 -A:521

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Ser A:103 -Pro A:104

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1GPN)

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CARBOXYLESTERASE_B_2PS00941 Carboxylesterases type-B signature 2.ACES_TETCF113-123  1A:92-102
2CARBOXYLESTERASE_B_1PS00122 Carboxylesterases type-B serine active site.ACES_TETCF208-223  1A:187-202

(-) Exons   (0, 0)

(no "Exon" information available for 1GPN)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:529
 aligned with ACES_TETCF | P04058 from UniProtKB/Swiss-Prot  Length:586

    Alignment length:532
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364       374       384       394       404       414       424       434       444       454       464       474       484       494       504       514       524       534       544       554  
           ACES_TETCF    25 SELLVNTKSGKVMGTRVPVLSSHISAFLGIPFAEPPVGNMRFRRPEPKKPWSGVWNASTYPNNCQQYVDEQFPGFSGSEMWNPNREMSEDCLYLNIWVPSPRPKSTTVMVWIYGGGFYSGSSTLDVYNGKYLAYTEEVVLVSLSYRVGAFGFLALHGSQEAPGNVGLLDQRMALQWVHDNIQFFGGDPKTVTIFGESAGGASVGMHILSPGSRDLFRRAILQSGSPNCPWASVSVAEGRRRAVELGRNLNCNLNSDEELIHCLREKKPQELIDVEWNVLPFDSIFRFSFVPVIDGEFFPTSLESMLNSGNFKKTQILLGVNKDEGSFFLLYGAPGFSKDSESKISREDFMSGVKLSVPHANDLGLDAVTLQYTDWMDDNNGIKNRDGLDDIVGDHNVICPLMHFVNKYTKFGNGTYLYFFNHRASNLVWPEWMGVIHGYEIEFVFGLPLVKELNYTAEEEALSRRIMHYWATFAKTGNPNEPHSQESKWPLFTTKEQKFIDLNTEPMKVHQRLRVQMCVFWNQFLPKLLNAT 556
               SCOP domains d1gpna_ A: Acetylcholinesterase                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      SCOP domains
               CATH domains 1gpnA00 A:4-535  [code=3.40.50.1820, no name defined]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeee..eeee.eeee....eeeeeeeee.....hhhhh............eee..................hhhhhh............eeeeee.......eeeeeee...........hhhhhhhhhhhhhh.eeee....hhhhhhh..........hhhhhhhhhhhhhhhhhhhhh.eeeeeeeeeeehhhhhhhhhhhhh..hhhhh.eeeee..........eehhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhh............ee.......hhhhhhhhh......eeeeee...hhhhhhh.............hhhhhhhhhhhhh...hhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..eeeeee.........hhhhh.....hhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhh.......---..........eeeee......eee..hhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------CARBOXYLEST------------------------------------------------------------------------------------CARBOXYLESTERASE--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1gpn A   4 SELLVNTKSGKVMGTRVPVLSSHISAFLGIPFAEPPVGNMRFRRPEPKKPWSGVWNASTYPNNCQQYVDEQFPGFSGSEMWNPNREMSEDCLYLNIWVPSPRPKSTTVMVWIYGGGFYSGSSTLDVYNGKYLAYTEEVVLVSLSYRVGAFGFLALHGSQEAPGNVGLLDQRMALQWVHDNIQFFGGDPKTVTIFGESAGGASVGMHILSPGSRDLFRRAILQSGSPNCPWASVSVAEGRRRAVELGRNLNCNLNSDEELIHCLREKKPQELIDVEWNVLPFDSIFRFSFVPVIDGEFFPTSLESMLNSGNFKKTQILLGVNKDEGSFFLLYGAPGFSKDSESKISREDFMSGVKLSVPHANDLGLDAVTLQYTDWMDDNNGIKNRDGLDDIVGDHNVICPLMHFVNKYTKFGNGTYLYFFNHRASNLVWPEWMGVIHGYEIEFVFGLPLVKELNYTAEEEALSRRIMHYWATFAKTGNPNEPHS---KWPLFTTKEQKFIDLNTEPMKVHQRLRVQMCVFWNQFLPKLLNAT 535
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383       393       403       413       423       433       443       453       463       473       483   |   493       503       513       523       533  
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             487 491
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1GPN)

(-) Gene Ontology  (12, 12)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ACES_TETCF | P04058)
molecular function
    GO:0003990    acetylcholinesterase activity    Catalysis of the reaction: acetylcholine + H2O = choline + acetate.
    GO:0052689    carboxylic ester hydrolase activity    Catalysis of the hydrolysis of a carboxylic ester bond.
    GO:0004104    cholinesterase activity    Catalysis of the reaction: an acylcholine + H2O = choline + a carboxylic acid anion.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
biological process
    GO:0001507    acetylcholine catabolic process in synaptic cleft    The chemical reactions and pathways resulting in the breakdown of acetylcholine that occurs in the synaptic cleft during synaptic transmission.
    GO:0042135    neurotransmitter catabolic process    The chemical reactions and pathways resulting in the breakdown of any of a group of substances that are released on excitation from the axon terminal of a presynaptic neuron of the central or peripheral nervous system and travel across the synaptic cleft to either excite or inhibit the target cell.
cellular component
    GO:0031225    anchored component of membrane    The component of a membrane consisting of the gene products that are tethered to the membrane only by a covalently attached anchor, such as a lipid group that is embedded in the membrane. Gene products with peptide sequences that are embedded in the membrane are excluded from this grouping.
    GO:0030054    cell junction    A cellular component that forms a specialized region of connection between two or more cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
    GO:0045202    synapse    The junction between a nerve fiber of one neuron and another neuron, muscle fiber or glial cell. As the nerve fiber approaches the synapse it enlarges into a specialized structure, the presynaptic nerve ending, which contains mitochondria and synaptic vesicles. At the tip of the nerve ending is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic nerve ending secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.
    GO:0043083    synaptic cleft    The narrow gap that separates the presynaptic and postsynaptic membranes, into which neurotransmitter is released.

 Visualization

(-) Interactive Views

Asymmetric/Biological Unit
  Complete Structure
    Jena3D(integrated viewing of ligand, site, SAP, PROSITE, SCOP information)
    WebMol | AstexViewer[tm]@PDBe
(Java Applets, require no local installation except for Java; loading may be slow)
    STRAP
(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    RasMol
(require local installation)
    Molscript (VRML)
(requires installation of a VRML viewer; select preferred view via VRML and generate a mono or stereo PDF format file)
 
  Ligands, Modified Residues, Ions
    HUB  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
    NAG  [ RasMol | Jena3D ]  +environment [ RasMol | Jena3D ]
 
  Sites
    AC1  [ RasMol ]  +environment [ RasMol ]
    AC2  [ RasMol ]  +environment [ RasMol ]
    AC3  [ RasMol ]  +environment [ RasMol ]
 
  Cis Peptide Bonds
    Ser A:103 - Pro A:104   [ RasMol ]  
 

(-) Still Images

Jmol
  protein: cartoon or spacefill or dots and stick; nucleic acid: cartoon and stick; ligands: spacefill; active site: stick
[ Asym./Biol. Unit PNG format | Asym./Biol. Unit - sites PNG format ](automatic orientation, automatically generated)
Molscript
  protein, nucleic acid: cartoon; ligands: spacefill; active site: ball and stick
[ mono PDF format | stereo PDF format ](default orientation, automatically generated)

 Databases and Analysis Tools

(-) Databases

Access by PDB/NDB ID
  1gpn
    Family and Domain Information: ProDom | SYSTERS
    General Structural Information: GlycoscienceDB | MMDB | NDB | OCA | PDB | PDBe | PDBj | PDBsum | PDBWiki | PQS | PROTEOPEDIA
    Orientation in Membranes: OPM
    Protein Surface: SURFACE
    Secondary Structure: DSSP (structure derived) | HSSP (homology derived)
    Structural Genomics: GeneCensus
    Structural Neighbours: CE | VAST
    Structure Classification: CATH | Dali | SCOP
    Validation and Original Data: BMRB Data View | BMRB Restraints Grid | EDS | PROCHECK | RECOORD | WHAT_CHECK
 
Access by UniProt ID/Accession number
  ACES_TETCF | P04058
    Comparative Protein Structure Models: ModBase
    Genomic Information: Ensembl
    Protein-protein Interaction: DIP
    Sequence, Family and Domain Information: InterPro | Pfam | SMART | UniProtKB/SwissProt
 
Access by Enzyme Classificator   (EC Number)
  3.1.1.7
    General Enzyme Information: BRENDA | EC-PDB | Enzyme | IntEnz
    Pathway: KEGG | MetaCyc
 
Access by Disease Identifier   (MIM ID)
  (no 'MIM ID' available)
    Disease Information: OMIM
 
Access by GenAge ID
  (no 'GenAge ID' available)
    Age Related Information: GenAge

(-) Analysis Tools

Access by PDB/NDB ID
    Domain Information: XDom
    Interatomic Contacts of Structural Units: CSU
    Ligand-protein Contacts: LPC
    Protein Cavities: castP
    Sequence and Secondary Structure: PDBCartoon
    Structure Alignment: STRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
    Structure and Sequence Browser: STING
 
Access by UniProt ID/Accession number
  ACES_TETCF | P04058
    Protein Disorder Prediction: DisEMBL | FoldIndex | GLOBPLOT (for more information see DisProt)

 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        ACES_TETCF | P04058: 1acj 1acl 1amn 1ax9 1cfj 1dx6 1e3q 1e66 1ea5 1eea 1eve 1fss 1gpk 1gqr 1gqs 1h22 1h23 1hbj 1jga 1jgb 1jjb 1oce 1odc 1qid 1qie 1qif 1qig 1qih 1qii 1qij 1qik 1qim 1qti 1som 1u65 1ut6 1vot 1vxo 1vxr 1w4l 1w6r 1w75 1w76 1zgb 1zgc 2ace 2ack 2bag 2c4h 2c58 2c5f 2c5g 2cek 2ckm 2cmf 2dfp 2j3d 2j3q 2j4f 2v96 2v97 2v98 2va9 2vja 2vjb 2vjc 2vjd 2vq6 2vt6 2vt7 2w6c 2wfz 2wg0 2wg1 2wg2 2xi4 3ace 3gel 3i6m 3i6z 3m3d 3zv7 4ace 4tvk 4w63 4x3c 5bwb 5bwc 5dlp 5e2i 5e4j 5e4t 5ehx 5ei5 5ih7

(-) Related Entries Specified in the PDB File

1acj ACETYLCHOLINESTERASE COMPLEXED WITH TACRINE
1acl ACETYLCHOLINESTERASE COMPLEXED WITH DECAMETHONIUM
1amn TRANSITION STATE ANALOG: ACETYLCHOLINESTERASE COMPLEXED WITH M-(N,N,N-TRIMETHYLAMMONIO) TRIFLUOROACETOPHENONE
1ax9 ACETYLCHOLINESTERASE COMPLEXED WITH EDROPHONIUM, LAUE DATA
1cfj METHYLPHOSPHONYLATED ACETYLCHOLINESTERASE (AGED) OBTAINED BY REACTION WITH O- ISOPROPYLMETHYLPHOSPHONOFLUORIDATE (GB, SARIN)
1dx6 STRUCTURE OF ACETYLCHOLINESTERASE COMPLEXED WITH (-)-GALANTHAMINE AT 2.3A RESOLUTION
1e3q TORPEDO CALIFORNICA ACETYLCHOLINESTERASE COMPLEXED WITH BW284C51
1e66 STRUCTURE OF ACETYLCHOLINESTERASE COMPLEXED WITH (-)-HUPRINE X AT 2.1A RESOLUTION
1ea5 NATIVE ACETYLCHOLINESTERASE (E.C. 3.1.1.7 ) FROM TORPEDO CALIFORNICA AT 1.8A RESOLUTION
1eea ACETYLCHOLINESTERASE
1eve THREE DIMENSIONAL STRUCTURE OF THE ANTI- ALZHEIMER DRUG, E2020 (ARICEPT), COMPLEXED WITH ITS TARGET ACETYLCHOLINESTERASE
1fss ACETYLCHOLINESTERASE COMPLEXED WITH FASCICULIN- II
1gpk STRUCTURE OF ACETYLCHOLINESTERASE COMPLEXE WITH (+)-HUPERZINE A AT 2.1A RESOLUTION
1hbj X-RAY CRYSTAL STRUCTURE OF COMPLEX BETWEEN TORPEDO CALIFORNICA ACHE AND A REVERSIBLE INHIBITOR, 4-AMINO-5-FLUORO-2-METHYL-3-( 3-TRIFLUOROACETYLBENZYLTHIOMETHYL)QUINOLINE
1oce ACETYLCHOLINESTERASE COMPLEXED WITH MF268
1qid SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT A) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qie SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT B) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qif SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT C) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qig SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT D) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qih SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT E) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qii SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT F) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qij SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT G) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qik SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT H) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qim SPECIFIC CHEMICAL AND STRUCTURAL DAMAGE AT NINE TIME POINTS (POINT I) CAUSED BY INTENSE SYNCHROTRON RADIATION TO TORPEDO CALIFORNICA ACETYLCHOLINESTERASE
1qti ACETYLCHOLINESTERASE
1som TORPEDO CALIFORNICA ACETYLCHOLINESTERASE INHIBITED BY NERVE AGENT GD (SOMAN).
1vot ACETYLCHOLINESTERASE COMPLEXED WITH HUPERZINE A
1vxo METHYLPHOSPHONYLATED ACETYLCHOLINESTERASE (AGED) OBTAINED BY REACTION WITH O-ETHYL-S-[2-[ BIS(1-METHYLETHYL) AMINO]ETHYL] METHYLPHOSPHONOTHIOATE (VX)
1vxr O-ETHYLMETHYLPHOSPHONYLATED ACETYLCHOLINESTERASE OBTAINED BY REACTION WITH O-ETHYL-S-[2-[ BIS(1-METHYLETHYL) AMINO]ETHYL] METHYLPHOSPHONOTHIOATE (VX)
2ace NATIVE ACETYLCHOLINESTERASE FROM TORPEDO CALIFORNICA
2ack ACETYLCHOLINESTERASE COMPLEXED WITH EDROPHONIUM, MONOCHROMATIC DATA
2dfp X-RAY STRUCTURE OF AGED DI-ISOPROPYL- PHOSPHORO-FLUORIDATE (DFP) BOUND TO ACETYLCHOLINESTERASE
3ace THEORETICAL MODEL OF (R)-E2020 BOUND ACETYLCHOLINESTERASE COMPLEX, 3 STRUCTURES
4ace THEORETICAL MODEL OF (S)-E2020 BOUND ACETYLCHOLINESTERASE COMPLEX, 3 STRUCTURES