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(-) Description

Title :  CRYSTAL STRUCTURE OF S-ADENOSYLMETHIONINE SYNTHETASE FROM BURKHOLDERIA PSEUDOMALLEI
 
Authors :  B. L. Staker
Date :  10 Aug 09  (Deposition) - 22 Sep 09  (Release) - 30 Oct 13  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.35
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A,B  (1x)
Biol. Unit 2:  C,D  (1x)
Keywords :  S-Adenosylmethionine Synthetase, Structural Genomics, Atp-Binding, Cobalt, Magnesium, Metal-Binding, Nucleotide-Binding, One-Carbon Metabolism, Potassium, Transferase, Seattle Structural Genomics Center For Infectious Disease, Ssgcid (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  L. Baugh, L. A. Gallagher, R. Patrapuvich, M. C. Clifton, A. S. Gardberg, T. E. Edwards, B. Armour, D. W. Begley, S. H. Dieterich, D. M. Dranow, J. Abendroth, J. W. Fairman, D. Fox, B. L. Staker, I. Phan, A. Gillespie, R. Choi, S. Nakazawa-Hewitt, M. T. Nguyen, A. Napuli, L. Barrett, G. W. Buchko, R. Stacy, P. J. Myler, L. J. Stewart, C. Manoil W. C. Van Voorhis
Combining Functional And Structural Genomics To Sample The Essential Burkholderia Structome.
Plos One V. 8 53851 2013
PubMed-ID: 23382856  |  Reference-DOI: 10.1371/JOURNAL.PONE.0053851

(-) Compounds

Molecule 1 - S-ADENOSYLMETHIONINE SYNTHETASE
    Chains: A, B, C, D
    EC Number: 2.5.1.6
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: AVA0421
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Fragment: S-ADENOSYLMETHIONINE SYNTHETASE
    Gene: METK, BPSL0212
    Organism Common: PSEUDOMONAS PSEUDOMALLEI
    Organism Scientific: BURKHOLDERIA PSEUDOMALLEI
    Organism Taxid: 28450
    Synonym: METHIONINE ADENOSYLTRANSFERASE, ADOMET SYNTHETASE, MAT

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit : ABCD
Biological Unit 1 (1x): AB  
Biological Unit 2 (1x):   CD

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 3IML)

(-) Sites  (0, 0)

(no "Site" information available for 3IML)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 8)

Asymmetric Unit (2, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ADOMET_SYNTHASE_1PS00376 S-adenosylmethionine synthase signature 1.METK_BURPS119-129
 
 
 		  4A:119-129
B:119-129
C:119-129
D:123-129
2ADOMET_SYNTHASE_2PS00377 S-adenosylmethionine synthase signature 2.METK_BURPS262-270
 
 
 		  4A:262-270
B:262-270
C:262-270
D:262-270
Biological Unit 1 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ADOMET_SYNTHASE_1PS00376 S-adenosylmethionine synthase signature 1.METK_BURPS119-129
 
 
 		  2A:119-129
B:119-129
-
-
2ADOMET_SYNTHASE_2PS00377 S-adenosylmethionine synthase signature 2.METK_BURPS262-270
 
 
 		  2A:262-270
B:262-270
-
-
Biological Unit 2 (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ADOMET_SYNTHASE_1PS00376 S-adenosylmethionine synthase signature 1.METK_BURPS119-129
 
 
 		  2-
-
C:119-129
D:123-129
2ADOMET_SYNTHASE_2PS00377 S-adenosylmethionine synthase signature 2.METK_BURPS262-270
 
 
 		  2-
-
C:262-270
D:262-270

(-) Exons   (0, 0)

(no "Exon" information available for 3IML)

(-) 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:368
 aligned with METK_BURPS | Q63YH5 from UniProtKB/Swiss-Prot  Length:395

    Alignment length:389
                             1                                                                                                                                                                                                                                                                                                                                                                                                   
                             |       9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379         
           METK_BURPS     - -MANDYLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGYDNTDYGIDYRGCAVLVAYDKQSPDIAQGVDRAHDNNLDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTFGTGRVSDETITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADKALALAEAAGV 388
               SCOP domains d3imla1 A:0-102 automated matches                                                                                  d3imla2 A:115-235 automated matches                                                                                      d3imla3 A:236-388 automated matches                                                                                                                       SCOP domains
               CATH domains 3imlA01     3imlA02 A:12-102,A:237-273  [code=3.30.300.10, no name defined]                                        3imlA03                  3imlA01 A:0-11,A:140-236  [code=3.30.300.10, no name defined]                                    3imlA02 A:12-102,A:237-273           3imlA03 A:115-139,A:274-388  [code=3.30.300.10, no name defined]                                                    CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeeeeee...hhhhhhhhhhhhhhhhhhhhh...eeeeeeee...eeeeeeeee.....hhhhhhhhhhhhhh..---------..eeeeeeeee..------------.........eeeeeeee.......hhhhhhhhhhhhhhhhhhhh.....eeeeeeeeeeeeee..eeeeeeeeeeeeee....hhhhhhhhhhhhh.....hhhhh....eeee........hhhhh..ee...........................hhhhhhhhhhhhhhhhhhhh....eeeeeeee........eeeee.......hhhhhhhhhhhhh..hhhhhhhhhh.....hhhhhh..........hhhhh..hhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------ADOMET_SYNT------------------------------------------------------------------------------------------------------------------------------------ADOMET_SY---------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3iml A   0 SMANDYLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGYD---------GCAVLVAYDKQSP------------NLDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTFGTGRVSDETITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADKALALAEAAGV 388
                                     9        19        29        39        49        59        69        79|        -|       99  |      -     | 119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379         
                                                                                                           80        90         102          115                                                                                                                                                                                                                                                                                 


Chain B from PDB  Type:PROTEIN  Length:357
 aligned with METK_BURPS | Q63YH5 from UniProtKB/Swiss-Prot  Length:395

    Alignment length:383
                                    14        24        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   
           METK_BURPS     5 YLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGYDNTDYGIDYRGCAVLVAYDKQSPDIAQGVDRAHDNNLDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTFGTGRVSDETITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADKALALAEAAG 387
               SCOP domains d3imlb1 B:5-99 automated matches                                                                              d3imlb2 B:115-235 automated matches                                                                                      d3imlb3 B:236-387 automated matches                                                                                                                      SCOP domains
               CATH domains 3imlB013imlB02 B:12-99,B:237-273  [code=3.30.300.10, no name defined]                                         3imlB03                  3imlB01 B:5-11,B:140-236  [code=3.30.300.10, no name defined]                                    3imlB02 B:12-99,B:237-273            3imlB03 B:115-139,B:274-387  [code=3.30.300.10, no name defined]                                                   CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeee...hhhhhhhhhhhhhhhhhhhhh...eeeeeeee...eeeeeeeee.....hhhhhhhhhhhhhh.-----------.eeeeeee.---------------.........eeeeeeee.......hhhhhhhhhhhhhhhhhhhh.....eeeeeeeeeeeeee..eeeeeeeeeeeeee....hhhhhhhhhhhhhhhhhhhhhhh....eeee........hhhhh..ee...........................hhhhhhhhhhhhhhhhhhhh....eeeeeeee........eeeee.......hhhhhhhhhhhhh..hhhhhhhhhh.....hhhhhh..........hhhhh..hhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------ADOMET_SYNT------------------------------------------------------------------------------------------------------------------------------------ADOMET_SY--------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3iml B   5 YLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGY-----------CAVLVAYDK---------------NLDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTFGTGRVSDETITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADKALALAEAAG 387
                                    14        24        34        44        54        64        74    |    -      | 94    |    -         -|      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   
                                                                                                     79          91      99             115                                                                                                                                                                                                                                                                                


Chain C from PDB  Type:PROTEIN  Length:343
 aligned with METK_BURPS | Q63YH5 from UniProtKB/Swiss-Prot  Length:395

    Alignment length:375
                                    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     
           METK_BURPS     4 DYLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGYDNTDYGIDYRGCAVLVAYDKQSPDIAQGVDRAHDNNLDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTFGTGRVSDETITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADK 378
               SCOP domains d3imlc1 C:4-101 automated matches                                                                               d3imlc2 C:116-235 automated matches                                                                                     d3imlc3 C:236-378 automated matches                                                                                                             SCOP domains
               CATH domains 3imlC01 3imlC02 C:12-101,C:237-273  [code=3.30.300.10, no name defined]                                         3imlC03                 3imlC01 C:4-11,C:140-236  [code=3.30.300.10, no name defined]                                    3imlC02 C:12-101,C:237-273           3imlC03 C:116-139,C:274-378  [code=3.30.300.10        , no name defined]                                  CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeee...hhhhhhhhhhhhhhhhhhhhh...eeeeeeeee..eeeeeeeee.....hhhhhhhhhhhhhh.----------..eeeeeee...--------------........eeeeeeee.......hhhhhhhhhhhhhhhhhhhh.....eeeeeeeeeeeeee..eeeeeeeeeeeeee....hhhhhhhhhhhhhhhhhhhhhhh....eeee........hhhhh..ee...........................hhhhhhhhhhhhhhhhhhhh....eeeeeeee........eeeee..--------hhhhhhhhhh..hhhhhhhhhh......hhhhh..........hhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------ADOMET_SYNT------------------------------------------------------------------------------------------------------------------------------------ADOMET_SY------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3iml C   4 DYLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGY----------GCAVLVAYDKQS--------------LDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTF--------TITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADK 378
                                    13        23        33        43        53        63        73     |   -      | 93       | -         -  |    123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313     |   -    |  333       343       353       363       373     
                                                                                                      79         90        101            116                                                                                                                                                                                                        319      328                                                  


Chain D from PDB  Type:PROTEIN  Length:311
 aligned with METK_BURPS | Q63YH5 from UniProtKB/Swiss-Prot  Length:395

    Alignment length:374
                                    14        24        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    
           METK_BURPS     5 YLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGYDNTDYGIDYRGCAVLVAYDKQSPDIAQGVDRAHDNNLDQGAGDQGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYAIGVAEPTSVMVNTFGTGRVSDETITKLVREHFDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADK 378
               SCOP domains d3imld1 D:5-100 automated matches                                                                                     d3imld2 D:123-235 automated matches                                                                              ----------------------------------------------------------------------                               ------------------------------------------ SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeee...hhhhhhhhhhhhhhhhhhh.....eeeeeeee...eeeeeeeee.....hhhhhhhhhhhhhh.----------..eeee..eee----------------------..eeeeeee.......hhhhhhhhhhhhhhhhhhhh.....eeeeeeeeeeeeee..eeeeeeeeeeeeee....hhhhhhhhhhhhh.....hhhhh....eeee........hhhhh..ee...........................hhhhhhhhhhhhhhhhhhhh....eeeeeee..-------------------------------.....hhhhhhhh.....hhhhhh..........hhhhh... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------ADOMET_SYNT------------------------------------------------------------------------------------------------------------------------------------ADOMET_SY------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3iml D   5 YLFTSESVSEGHPDKVADQISDAILDAILAQDKYSRVAAETLCNTGLVVLAGEITTTANIDYIQIARDTIKRIGY----------GCAVLVAYDKQ----------------------QGLMFGYACDETPELMPLPIHLSHRLVERQANLRRDGRLPWLRPDAKSQVTVRYVDGKPHSIDTVVLSTQHAPEIDLPALREAVIEEVIKPTLPADLIKGDIKFLVNPTGRFVIGGPQGDCGLTGRKIIVDTYGGAAPHGGGAFSGKDPSKVDRSAAYAGRYVAKNIVAAGLASRALIQVSYA-------------------------------FDLRPKGIIQMLDLLRPIYEKTAAYGHFGREEPEFSWEAADK 378
                                    14        24        34        44        54        64        74    |    -     |  94     |   -         -       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304|        -         -         -  |    344       354       364       374    
                                                                                                     79         90       100                    123                                                                                                                                                                                   305                             337
   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, 11)

Asymmetric Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 9)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)
(-)
Architecture: 2-Layer Sandwich (8480)
(-)
Topology: GMP Synthetase; Chain A, domain 3 (192)
(-)
Homologous Superfamily: [code=3.30.300.10, no name defined] (22)
(-)
Pseudomonas pseudomallei (Burkholderia pseudomallei) (1)
1a3imlC03C:116-139,C:274-378
1b3imlB03B:115-139,B:274-387
1c3imlA03A:115-139,A:274-388
1d3imlA01A:0-11,A:140-236
1e3imlC01C:4-11,C:140-236
1f3imlB01B:5-11,B:140-236
1g3imlA02A:12-102,A:237-273
1h3imlC02C:12-101,C:237-273
1i3imlB02B:12-99,B:237-273

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (9, 9)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C,D   (METK_BURPS | Q63YH5)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0000287    magnesium ion binding    Interacting selectively and non-covalently with magnesium (Mg) ions.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0004478    methionine adenosyltransferase activity    Catalysis of the reaction: ATP + L-methionine + H2O = phosphate + diphosphate + S-adenosyl-L-methionine.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0006556    S-adenosylmethionine biosynthetic process    The chemical reactions and pathways resulting in the formation of S-adenosylmethionine, S-(5'-adenosyl)-L-methionine, an important intermediate in one-carbon metabolism.
    GO:0006730    one-carbon metabolic process    The chemical reactions and pathways involving the transfer of one-carbon units in various oxidation states.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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