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(-) Description

Title :  CRYSTAL STRUCTURE OF ESCHERICHIA COLI METHYLENETETRAHYDROFOLATE REDUCTASE MUTANT PHE223LEU AT PH 7.4
 
Authors :  J. J. Tanner
Date :  12 Jan 09  (Deposition) - 25 Aug 09  (Release) - 25 Aug 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.65
Chains :  Asym. Unit :  A,C,E
Biol. Unit 1:  A (2x),C (1x),E (1x)
Keywords :  Tim Barrel, Flavin, Reductase, Amino-Acid Biosynthesis, Fad, Flavoprotein, Methionine Biosynthesis, Nad, Nadp, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  M. N. Lee, D. Takawira, A. P. Nikolova, D. P. Ballou, V. C. Furtado, N. L. Phung, B. R. Still, M. K. Thorstad, J. J. Tanner, E. E. Trimmer
Functional Role For The Conformationally Mobile Phenylalanine 223 In The Reaction Of Methylenetetrahydrofolate Reductase From Escherichia Coli.
Biochemistry V. 48 7673 2009
PubMed-ID: 19610625  |  Reference-DOI: 10.1021/BI9007325
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - 5,10-METHYLENETETRAHYDROFOLATE REDUCTASE
    ChainsA, C, E
    EC Number1.5.1.20
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPDTL2
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneMETF, B3941, JW3913
    MutationYES
    Organism ScientificESCHERICHIA COLI K-12
    Organism Taxid83333

 Structural Features

(-) Chains, Units

  123
Asymmetric Unit ACE
Biological Unit 1 (2x)A (2x)C (1x)E (1x)

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 7)

Asymmetric Unit (3, 7)
No.NameCountTypeFull Name
1FAD3Ligand/IonFLAVIN-ADENINE DINUCLEOTIDE
2MRY1Ligand/IonMESO-ERYTHRITOL
3SO43Ligand/IonSULFATE ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1FAD-1Ligand/IonFLAVIN-ADENINE DINUCLEOTIDE
2MRY-1Ligand/IonMESO-ERYTHRITOL
3SO4-1Ligand/IonSULFATE ION

(-) Sites  (7, 7)

Asymmetric Unit (7, 7)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETHR A:59 , TYR A:60 , ALA A:62 , HIS A:88 , LEU A:117 , ARG A:118 , GLY A:119 , ASP A:120 , TYR A:131 , ALA A:132 , ALA A:150 , TYR A:152 , HIS A:156 , GLU A:158 , ALA A:159 , ASP A:165 , ASN A:168 , ARG A:171 , LYS A:172 , ILE A:181 , GLN A:183 , TYR A:275 , HOH A:322 , HOH A:336 , HOH A:363 , HOH A:367 , HOH A:402 , HOH A:438BINDING SITE FOR RESIDUE FAD A 395
2AC2SOFTWARETHR C:59 , TYR C:60 , HIS C:88 , LEU C:117 , ARG C:118 , GLY C:119 , ASP C:120 , TYR C:131 , ALA C:132 , ALA C:150 , TYR C:152 , HIS C:156 , GLU C:158 , ALA C:159 , ASP C:165 , ASN C:168 , ARG C:171 , LYS C:172 , ILE C:181 , GLN C:183 , TYR C:275 , HOH C:340 , HOH C:343 , HOH C:375 , HOH C:393 , HOH C:450 , HOH C:488 , HOH C:491 , HOH C:517 , MRY C:5321BINDING SITE FOR RESIDUE FAD C 396
3AC3SOFTWARETHR E:59 , TYR E:60 , HIS E:88 , THR E:90 , LEU E:117 , ARG E:118 , GLY E:119 , ASP E:120 , TYR E:131 , ALA E:132 , ALA E:150 , TYR E:152 , HIS E:156 , ALA E:159 , ASP E:165 , ASN E:168 , ARG E:171 , LYS E:172 , ILE E:181 , GLN E:183 , TYR E:275 , HOH E:315 , HOH E:447BINDING SITE FOR RESIDUE FAD E 397
4AC4SOFTWAREGLU C:28 , GLN C:183 , PHE C:184 , TYR C:275 , LEU C:277 , HOH C:360 , HOH C:394 , FAD C:396 , HOH C:459BINDING SITE FOR RESIDUE MRY C 5321
5AC5SOFTWAREARG E:230 , PRO E:232 , ALA E:233 , TRP E:234 , HOH E:465BINDING SITE FOR RESIDUE SO4 E 305
6AC6SOFTWAREARG A:279 , ALA A:280 , GLU A:281 , HOH A:318 , HOH A:426 , HOH E:520BINDING SITE FOR RESIDUE SO4 E 306
7AC7SOFTWARESER E:44 , ARG E:279 , ALA E:280 , GLU E:281 , HOH E:329 , HOH E:521BINDING SITE FOR RESIDUE SO4 E 307

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3FST)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3FST)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3FST)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3FST)

(-) Exons   (0, 0)

(no "Exon" information available for 3FST)

(-) Sequences/Alignments

Asymmetric 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:286
 aligned with METF_ECOLI | P0AEZ1 from UniProtKB/Swiss-Prot  Length:296

    Alignment length:292
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292  
           METF_ECOLI     3 FFHASQRDALNQSLAEVQGQINVSFEFFPPRTSEMEQTLWNSIDRLSSLKPKFVSVTYGANSGERDRTHSIIKGIKDRTGLEAAPHLTCIDATPDELRTIARDYWNNGIRHIVALRGDLPPGSGKPEMYASDLVTLLKEVADFDISVAAYPEVHPEAKSAQADLLNLKRKVDAGANRAITQFFFDVESYLRFRDRCVSAGIDVEIIPGILPVSNFKQAKKFADMTNVRIPAWMAQMFDGLDDDAETRKLVGANIAMDMVKILSREGVKDFHFYTLNRAEMSYAICHTLGVRP 294
               SCOP domains d3fsta_ A: automated matches                                                                                                                                                                                                                                                                         SCOP domains
               CATH domains 3fstA00 A:3-294  [code=3.20.20.220, no name defined]                                                                                                                                                                                                                                                 CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhh.....eeeeee....hhhhhhhhhhhhhhhhh....eeee.......hhhhhhhhhhhhhhhhh..eeeeee....hhhhhhhhhhhhhhh...eeeee.....------..hhhhhhhhhhhhh..eeeeee.........hhhhhhhhhhhhhhhh..eeee....hhhhhhhhhhhhhhh.....ee.ee....hhhhhhhhhhhh....hhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhh...eeeee....hhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3fst A   3 FFHASQRDALNQSLAEVQGQINVSFEFFPPRTSEMEQTLWNSIDRLSSLKPKFVSVTYGANSGERDRTHSIIKGIKDRTGLEAAPHLTCIDATPDELRTIARDYWNNGIRHIVALRGDLP------EMYASDLVTLLKEVADFDISVAAYPEVHPEAKSAQADLLNLKRKVDAGANRAITQFFFDVESYLRFRDRCVSAGIDVEIIPGILPVSNFKQAKKLADMTNVRIPAWMAQMFDGLDDDAETRKLVGANIAMDMVKILSREGVKDFHFYTLNRAEMSYAICHTLGVRP 294
                                    12        22        32        42        52        62        72        82        92       102       112       122      |132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292  
                                                                                                                                                 122    129                                                                                                                                                                     

Chain C from PDB  Type:PROTEIN  Length:265
 aligned with METF_ECOLI | P0AEZ1 from UniProtKB/Swiss-Prot  Length:296

    Alignment length:273
                                    31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291   
           METF_ECOLI    22 QINVSFEFFPPRTSEMEQTLWNSIDRLSSLKPKFVSVTYGANSGERDRTHSIIKGIKDRTGLEAAPHLTCIDATPDELRTIARDYWNNGIRHIVALRGDLPPGSGKPEMYASDLVTLLKEVADFDISVAAYPEVHPEAKSAQADLLNLKRKVDAGANRAITQFFFDVESYLRFRDRCVSAGIDVEIIPGILPVSNFKQAKKFADMTNVRIPAWMAQMFDGLDDDAETRKLVGANIAMDMVKILSREGVKDFHFYTLNRAEMSYAICHTLGVRP 294
               SCOP domains d3fstc_ C: automated matches                                                                                                                                                                                                                                                      SCOP domains
               CATH domains 3fstC00 C:22-294  [code=3.20.20.220, no name defined]                                                                                                                                                                                                                             CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeee....hhhhhhhhhhhhhhhhh....eeee......hhhhhhhhhhhhhhhhhh..eeeeee....hhhhhhhhhhhhhhh...eeeee...--------..hhhhhhhhhhhhh..eeeeee.........hhhhhhhhhhhhhhh...eeee....hhhhhhhhhhhhhhh....eee.ee....hhhhhhhhhhhh....hhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhh...eeeee....hhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3fst C  22 QINVSFEFFPPRTSEMEQTLWNSIDRLSSLKPKFVSVTYGANSGERDRTHSIIKGIKDRTGLEAAPHLTCIDATPDELRTIARDYWNNGIRHIVALRGD--------EMYASDLVTLLKEVADFDISVAAYPEVHPEAKSAQADLLNLKRKVDAGANRAITQFFFDVESYLRFRDRCVSAGIDVEIIPGILPVSNFKQAKKLADMTNVRIPAWMAQMFDGLDDDAETRKLVGANIAMDMVKILSREGVKDFHFYTLNRAEMSYAICHTLGVRP 294
                                    31        41        51        61        71        81        91       101       111        |-       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291   
                                                                                                                            120      129                                                                                                                                                                     

Chain E from PDB  Type:PROTEIN  Length:274
 aligned with METF_ECOLI | P0AEZ1 from UniProtKB/Swiss-Prot  Length:296

    Alignment length:291
                                    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 
           METF_ECOLI     4 FHASQRDALNQSLAEVQGQINVSFEFFPPRTSEMEQTLWNSIDRLSSLKPKFVSVTYGANSGERDRTHSIIKGIKDRTGLEAAPHLTCIDATPDELRTIARDYWNNGIRHIVALRGDLPPGSGKPEMYASDLVTLLKEVADFDISVAAYPEVHPEAKSAQADLLNLKRKVDAGANRAITQFFFDVESYLRFRDRCVSAGIDVEIIPGILPVSNFKQAKKFADMTNVRIPAWMAQMFDGLDDDAETRKLVGANIAMDMVKILSREGVKDFHFYTLNRAEMSYAICHTLGVRP 294
               SCOP domains d3fste_ E: automated matches                                                                                                                                                                                                                                                                        SCOP domains
               CATH domains 3fstE00 E:4-294  [code=3.20.20.220, no name defined]                                                                                                                                                                                                                                                CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhh....eeeeee....hhhhhhhhhhhhhhhhh....eeee..---------hhhhhhhhhhhhh..eeeeee....hhhhhhhhhhhhhh....eeeee...--------..hhhhhhhhhhhhh..eeeeee.........hhhhhhhhhhhhhhh...eeee....hhhhhhhhhhhhhhh.....ee.ee....hhhhhhhhhhhhh...hhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhh...eeeee....hhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3fst E   4 FHASQRDALNQSLAEVQGQINVSFEFFPPRTSEMEQTLWNSIDRLSSLKPKFVSVTY---------THSIIKGIKDRTGLEAAPHLTCIDATPDELRTIARDYWNNGIRHIVALRGD--------EMYASDLVTLLKEVADFDISVAAYPEVHPEAKSAQADLLNLKRKVDAGANRAITQFFFDVESYLRFRDRCVSAGIDVEIIPGILPVSNFKQAKKLADMTNVRIPAWMAQMFDGLDDDAETRKLVGANIAMDMVKILSREGVKDFHFYTLNRAEMSYAICHTLGVRP 294
                                    13        23        33        43        53      |  -      | 73        83        93       103       113      |  -     | 133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293 
                                                                                   60        70                                               120      129                                                                                                                                                                     

   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, 3)

Asymmetric Unit

(-) CATH Domains  (1, 3)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3FST)

(-) Gene Ontology  (12, 12)

Asymmetric Unit(hide GO term definitions)
Chain A,C,E   (METF_ECOLI | P0AEZ1)
molecular function
    GO:0071949    FAD binding    Interacting selectively and non-covalently with the oxidized form, FAD, of flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes.
    GO:0004489    methylenetetrahydrofolate reductase (NAD(P)H) activity    Catalysis of the reaction: 5-methyltetrahydrofolate + NAD(P)+ = 5,10-methylenetetrahydrofolate + NAD(P)H + H+.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
biological process
    GO:0008652    cellular amino acid biosynthetic process    The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents.
    GO:0009086    methionine biosynthetic process    The chemical reactions and pathways resulting in the formation of methionine (2-amino-4-(methylthio)butanoic acid), a sulfur-containing, essential amino acid found in peptide linkage in proteins.
    GO:0006555    methionine metabolic process    The chemical reactions and pathways involving methionine (2-amino-4-(methylthio)butanoic acid), a sulfur-containing, essential amino acid found in peptide linkage in proteins.
    GO:0006730    one-carbon metabolic process    The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0051289    protein homotetramerization    The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits.
    GO:0046654    tetrahydrofolate biosynthetic process    The chemical reactions and pathways resulting in the formation of tetrahydrofolate, 5,6,7,8-tetrahydrofolic acid, a folate derivative bearing additional hydrogens on the pterin group.
    GO:0035999    tetrahydrofolate interconversion    The chemical reactions and pathways by which one-carbon (C1) units are transferred between tetrahydrofolate molecules, to synthesise other tetrahydrofolate molecules.
cellular component
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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 Related Entries

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

UniProtKB/Swiss-Prot
        METF_ECOLI | P0AEZ11b5t 1zp3 1zp4 1zpt 1zrq 2fmn 2fmo 3fsu

(-) Related Entries Specified in the PDB File

3fsu