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(-) Description

Title :  ATOMIC MODEL OF THE DNA-BOUND METHYLASE COMPLEX FROM THE TYPE I RESTRICTION-MODIFICATION ENZYME ECOKI (M2S1). BASED ON FITTING INTO EM MAP 1534.
 
Authors :  C. K. Kennaway, A. Obarska-Kosinska, J. H. White, I. Tuszynska, L. P. Co J. M. Bujnicki, J. Trinick, D. T. F. Dryden
Date :  31 Jan 11  (Deposition) - 09 Feb 11  (Release) - 20 Mar 13  (Revision)
Method :  ELECTRON MICROSCOPY
Resolution :  18.00
Chains :  Asym./Biol. Unit :  A,B,C,D,E
Keywords :  Transferase-Dna Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  C. K. Kennaway, A. Obarska-Kosinska, J. H. White, I. Tuszynska, L. P. Cooper, J. M. Bujnicki, J. Trinick, D. T. F. Dryden
The Structure Of M. Ecoki Type I Dna Methyltransferase With A Dna Mimic Antirestriction Protein.
Nucleic Acids Res. V. 37 762 2009
PubMed-ID: 19074193  |  Reference-DOI: 10.1093/NAR/GKN988

(-) Compounds

Molecule 1 - TYPE-1 RESTRICTION ENZYME ECOKI SPECIFICITY PROTEIN
    Chains: A
    EC Number: 3.1.21.3
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Strain: K
    Synonym: HSDS TYPE I DNA RESTRICTION SPECIFICITY SUBUNIT, S.ECOKI, TYPE I RESTRICTION ENZYME ECOKI SPECIFICITY PROTEIN, S PROTEIN
 
Molecule 2 - TYPE I RESTRICTION ENZYME ECOKI M PROTEIN
    Chains: B, C
    EC Number: 3.1.21.3, 2.1.1.72
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Strain: K
    Synonym: HSDM TYPE I DNA RESTRICTION METHYLTRANSFERASE SUBUNIT, M.ECOKI
 
Molecule 3 - 5'-D(*GP*TP*TP*CP*AP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*GP*CP*AP*AP*C)-3'
    Chains: D
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Other Details: FLIPPED OUT ADENINE
    Synthetic: YES
 
Molecule 4 - 5'-D(*GP*TP*TP*GP*CP*AP*CP*GP*TP*CP*GP*AP*CP*GP *TP*TP*GP*AP*AP*C)-3'
    Chains: E
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Other Details: FLIPPED OUT ADENINE BASE
    Synthetic: YES

 Structural Features

(-) Chains, Units

  12345
Asymmetric/Biological Unit : ABCDE

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1SAM2Ligand/IonS-ADENOSYLMETHIONINE

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLN B:148 , TYR B:149 , THR B:151 , ALA B:175 , GLY B:177 , THR B:178 , GLY B:180 , PHE B:181 , GLU B:216 , ASN B:248 , THR B:249 , ASN B:266 , PRO B:268 , THR B:275 , PHE B:292 , DA D:6BINDING SITE FOR RESIDUE SAM B 530
2AC2SOFTWAREGLN C:148 , TYR C:149 , THR C:151 , ALA C:175 , GLY C:177 , THR C:178 , GLY C:180 , PHE C:181 , GLU C:216 , ASN C:248 , THR C:249 , ASN C:266 , PRO C:268 , THR C:275 , DA E:6BINDING SITE FOR RESIDUE SAM C 530

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2Y7H)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2Y7H)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2Y7H)

(-) PROSITE Motifs  (1, 2)

Asymmetric/Biological Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1N6_MTASEPS00092 N-6 Adenine-specific DNA methylases signature.T1MK_ECOLI263-269
 		  2B:263-269
C:263-269

(-) Exons   (0, 0)

(no "Exon" information available for 2Y7H)

(-) 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:464
 aligned with T1SK_ECOLI | P05719 from UniProtKB/Swiss-Prot  Length:464

    Alignment length:464
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460    
           T1SK_ECOLI     1 MSAGKLPEGWVIAPVSTVTTLIRGVTYKKEQAINYLKDDYLPLIRANNIQNGKFDTTDLVFVPKNLVKESQKISPEDIVIAMSSGSKSVVGKSAHQHLPFECSFGAFCGVLRPEKLIFSGFIAHFTKSSLYRNKISSLSAGANINNIKPASFDLINIPIPPLAEQKIIAEKLDTLLAQVDSTKARFEQIPQILKRFRQAVLGGAVNGKLTEKWRNFEPQHSVFKKLNFESILTELRNGLSSKPNESGVGHPILRISSVRAGHVDQNDIRFLECSESELNRHKLQDGDLLFTRYNGSLEFVGVCGLLKKLQHQNLLYPDKLIRARLTKDALPEYIEIFFSSPSARNAMMNCVKTTSGQKGISGKDIKSQVVLLPPVKEQAEIVRRVEQLFAYADTIEKQVNNALARVNNLTQSILAKAFRGELTAQWRAENPDLISGENSAAALLEKIKAERAASGGKKASRKKS 464
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Methylase_S-2y7hA01 A:318-405                                                           ----------------------------------------------------------- Pfam domains (1)
           Pfam domains (2) -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Methylase_S-2y7hA02 A:318-405                                                           ----------------------------------------------------------- Pfam domains (2)
         Sec.struct. author ..........eeeehhhhh.eee........hhhhhh....ee.hhhhhhh.......ee.hhhhhhhh.........eeee.........eeee...........eeeee......hhhhhhhhhhhhhhhhhhhh..........hhhhhhhheeee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....ee......ee...eeeehhhheeee........hhhhhh..ee..hhhhhhhh.......eehhhhhhhhh..ee....eeee...........eee........ee....eeeeee....hhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhheeee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2y7h A   1 MSAGKLPEGWVIAPVSTVTTLIRGVTYKKEQAINYLKDDYLPLIRANNIQNGKFDTTDLVFVPKNLVKESQKISPEDIVIAMSSGSKSVVGKSAHQHLPFECSFGAFCGVLRPEKLIFSGFIAHFTKSSLYRNKISSLSAGANINNIKPASFDLINIPIPPLAEQKIIAEKLDTLLAQVDSTKARFEQIPQILKRFRQAVLGGAVNGKLTEKWRNFEPQHSVFKKLNFESILTELRNGLSSKPNESGVGHPILRISSVRAGHVDQNDIRFLECSESELNRHKLQDGDLLFTRYNGSLEFVGVCGLLKKLQHQNLLYPDKLIRARLTKDALPEYIEIFFSSPSARNAMMNCVKTTSGQKGISGKDIKSQVVLLPPVKEQAEIVRRVEQLFAYADTIEKQVNNALARVNNLTQSILAKAFRGELTAQWRAENPDLISGENSAAALLEKIKAERAASGGKKASRKKS 464
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460    


Chain B from PDB  Type:PROTEIN  Length:529
 aligned with T1MK_ECOLI | P08957 from UniProtKB/Swiss-Prot  Length:529

    Alignment length:529
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510       520         
           T1MK_ECOLI     1 MNNNDLVAKLWKLCDNLRDGGVSYQNYVNELASLLFLKMCKETGQEAEYLPEGYRWDDLKSRIGQEQLQFYRKMLVHLGEDDKKLVQAVFHNVSTTITEPKQITALVSNMDSLDWYNGAHGKSRDDFGDMYEGLLQKNANETKSGAGQYFTPRPLIKTIIHLLKPQPREVVQDPAAGTAGFLIEADRYVKSQTNDLDDLDGDTQDFQIHRAFIGLELVPGTRRLALMNCLLHDIEGNLDHGGAIRLGNTLGSDGENLPKAHIVATNPPFGSAAGTNITRTFVHPTSNKQLCFMQHIIETLHPGGRAAVVVPDNVLFEGGKGTDIRRDLMDKCHLHTILRLPTGIFYAQGVKTNVLFFTKGTVANPNQDKNCTDDVWVYDLRTNMPSFGKRTPFTDEHLQPFERVYGEDPHGLSPRTEGEWSFNAEETEVADSEENKNTDQHLATSRWRKFSREWIRTAKSDSLDISWLKDKDSIDADSLPEPDVLAAEAMGELVQALSELDALMRELGASDEADLQRQLLEEAFGGVKE 529
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhh.......hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhh...hhhhh..hhhhhhhhhhhhh......eee.....hhhhhhhhhhhhhhhh.....hhhhhhhhhhh.eeeee.hhhhhhhhhhhhhhhh..........eee....hhhhhhh..eeeeee.....................hhhhhhhhhhhhheeeeeeeeeeeehhhhhh.hhhhhhhhhhhhheeeeeeee............eeeeeeee..............eeeeee..............hhhhhhhhhhhhh.....................ee.........hhhhhhh.eeeeehhhhhhh.........ee..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------N6_MTAS-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2y7h B   1 MNNNDLVAKLWKLCDNLRDGGVSYQNYVNELASLLFLKMCKETGQEAEYLPEGYRWDDLKSRIGQEQLQFYRKMLVHLGEDDKKLVQAVFHNVSTTITEPKQITALVSNMDSLDWYNGAHGKSRDDFGDMYEGLLQKNANETKSGAGQYFTPRPLIKTIIHLLKPQPREVVQDPAAGTAGFLIEADRYVKSQTNDLDDLDGDTQDFQIHRAFIGLELVPGTRRLALMNCLLHDIEGNLDHGGAIRLGNTLGSDGENLPKAHIVATNPPFGSAAGTNITRTFVHPTSNKQLCFMQHIIETLHPGGRAAVVVPDNVLFEGGKGTDIRRDLMDKCHLHTILRLPTGIFYAQGVKTNVLFFTKGTVANPNQDKNCTDDVWVYDLRTNMPSFGKRTPFTDEHLQPFERVYGEDPHGLSPRTEGEWSFNAEETEVADSEENKNTDQHLATSRWRKFSREWIRTAKSDSLDISWLKDKDSIDADSLPEPDVLAAEAMGELVQALSELDALMRELGASDEADLQRQLLEEAFGGVKE 529
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510       520         


Chain C from PDB  Type:PROTEIN  Length:529
 aligned with T1MK_ECOLI | P08957 from UniProtKB/Swiss-Prot  Length:529

    Alignment length:529
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510       520         
           T1MK_ECOLI     1 MNNNDLVAKLWKLCDNLRDGGVSYQNYVNELASLLFLKMCKETGQEAEYLPEGYRWDDLKSRIGQEQLQFYRKMLVHLGEDDKKLVQAVFHNVSTTITEPKQITALVSNMDSLDWYNGAHGKSRDDFGDMYEGLLQKNANETKSGAGQYFTPRPLIKTIIHLLKPQPREVVQDPAAGTAGFLIEADRYVKSQTNDLDDLDGDTQDFQIHRAFIGLELVPGTRRLALMNCLLHDIEGNLDHGGAIRLGNTLGSDGENLPKAHIVATNPPFGSAAGTNITRTFVHPTSNKQLCFMQHIIETLHPGGRAAVVVPDNVLFEGGKGTDIRRDLMDKCHLHTILRLPTGIFYAQGVKTNVLFFTKGTVANPNQDKNCTDDVWVYDLRTNMPSFGKRTPFTDEHLQPFERVYGEDPHGLSPRTEGEWSFNAEETEVADSEENKNTDQHLATSRWRKFSREWIRTAKSDSLDISWLKDKDSIDADSLPEPDVLAAEAMGELVQALSELDALMRELGASDEADLQRQLLEEAFGGVKE 529
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) -----HsdM_N-2y7hC03 C:6-110                                                                                   -----------N6_Mtase-2y7hC01 C:122-450                                                                                                                                                                                                                                                                                                               ------------------------------------------------------------------------------- Pfam domains (1)
           Pfam domains (2) -----HsdM_N-2y7hC04 C:6-110                                                                                   -----------N6_Mtase-2y7hC02 C:122-450                                                                                                                                                                                                                                                                                                               ------------------------------------------------------------------------------- Pfam domains (2)
         Sec.struct. author ...hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhh.......hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhh...hhhhh..hhhhhhhhhhhhh......eee.....hhhhhhhhhhhhhhhh.....hhhhhhhhhhh.eeeee.hhhhhhhhhhhhhhhh..........eee....hhhhhhh..eeeeee.....................hhhhhhhhhhhhheeeeeeeeeeeehhhhhh.hhhhhhhhhhhhheeeeeeee............eeeeeeee..............eeeeee..............hhhhhhhhhhhhh.....................ee.........hhhhhhh.eeeeehhhhhhh.........ee..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------N6_MTAS-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2y7h C   1 MNNNDLVAKLWKLCDNLRDGGVSYQNYVNELASLLFLKMCKETGQEAEYLPEGYRWDDLKSRIGQEQLQFYRKMLVHLGEDDKKLVQAVFHNVSTTITEPKQITALVSNMDSLDWYNGAHGKSRDDFGDMYEGLLQKNANETKSGAGQYFTPRPLIKTIIHLLKPQPREVVQDPAAGTAGFLIEADRYVKSQTNDLDDLDGDTQDFQIHRAFIGLELVPGTRRLALMNCLLHDIEGNLDHGGAIRLGNTLGSDGENLPKAHIVATNPPFGSAAGTNITRTFVHPTSNKQLCFMQHIIETLHPGGRAAVVVPDNVLFEGGKGTDIRRDLMDKCHLHTILRLPTGIFYAQGVKTNVLFFTKGTVANPNQDKNCTDDVWVYDLRTNMPSFGKRTPFTDEHLQPFERVYGEDPHGLSPRTEGEWSFNAEETEVADSEENKNTDQHLATSRWRKFSREWIRTAKSDSLDISWLKDKDSIDADSLPEPDVLAAEAMGELVQALSELDALMRELGASDEADLQRQLLEEAFGGVKE 529
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510       520         


Chain D from PDB  Type:DNA  Length:20
                                                    
                 2y7h D   1 GTTCAACGTCGACGTGCAAC  20
                                    10        20


Chain E from PDB  Type:DNA  Length:20
                                                    
                 2y7h E   1 GTTGCACGTCGACGTTGAAC  20
                                    10        20
   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  (0, 0)

(no "SCOP Domain" information available for 2Y7H)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2Y7H)

(-) Pfam Domains  (3, 6)

Asymmetric/Biological Unit
(-)
Clan: NADP_Rossmann (1239)
(-)
Clan: TRD (7)
(-)
Clan: no clan defined [family: HsdM_N] (3)

(-) Gene Ontology  (12, 14)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (T1SK_ECOLI | P05719)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
biological process
    GO:0006304    DNA modification    The covalent alteration of one or more nucleotide sites in DNA, resulting in a change in its properties.
    GO:0009307    DNA restriction-modification system    A defense process found in many bacteria and archaea that protects the organism from invading foreign DNA by cleaving it with a restriction endonuclease. The organism's own DNA is protected by methylation of a specific nucleotide, which occurs immediately following replication, in the same target site as the restriction enzyme.

Chain B,C   (T1MK_ECOLI | P08957)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0008170    N-methyltransferase activity    Catalysis of the transfer of a methyl group to the nitrogen atom of an acceptor molecule.
    GO:0008168    methyltransferase activity    Catalysis of the transfer of a methyl group to an acceptor molecule.
    GO:0003676    nucleic acid binding    Interacting selectively and non-covalently with any nucleic acid.
    GO:0009007    site-specific DNA-methyltransferase (adenine-specific) activity    Catalysis of the reaction: S-adenosyl-L-methionine + DNA adenine = S-adenosyl-L-homocysteine + DNA 6-methylaminopurine.
    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:0006306    DNA methylation    The covalent transfer of a methyl group to either N-6 of adenine or C-5 or N-4 of cytosine.
    GO:0032775    DNA methylation on adenine    The covalent transfer of a methyl group to N-6 of adenine in a DNA molecule.
    GO:0009307    DNA restriction-modification system    A defense process found in many bacteria and archaea that protects the organism from invading foreign DNA by cleaving it with a restriction endonuclease. The organism's own DNA is protected by methylation of a specific nucleotide, which occurs immediately following replication, in the same target site as the restriction enzyme.
    GO:0032259    methylation    The process in which a methyl group is covalently attached to a molecule.
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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  2y7h
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  T1MK_ECOLI | P08957
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  T1SK_ECOLI | P05719
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  2.1.1.72
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 Related Entries

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

UniProtKB/Swiss-Prot
        T1MK_ECOLI | P08957: 2ar0 2y7c
        T1SK_ECOLI | P05719: 2y7c

(-) Related Entries Specified in the PDB File

1s7z STRUCTURE OF OCR FROM BACTERIOPHAGE T7
1yf2 THREE-DIMENSIONAL STRUCTURE OF DNA SEQUENCE SPECIFICITY ( S)SUBUNIT OF A TYPE I RESTRICTION-MODIFICATION ENZYME ANDITS FUNCTIONAL IMPLICATIONS RELATED ID: EMD-1534 RELATED DB: EMDB ECOKI TYPE I RM METHYLTRANSFERASE WITH DNA MIMIC OCR. NEGATIVE STAIN 3D.
2ar0 CRYSTAL STRUCTURE OF TYPE I RESTRICTION ENZYME ECOKI MPROTEIN (EC 2.1.1.72) (M.ECOKI)
2y7c ATOMIC MODEL OF THE OCR-BOUND METHYLASE COMPLEX FROM THE TYPE I RESTRICTION-MODIFICATION ENZYME ECOKI (M2S1 ). BASED ON FITTING INTO EM MAP 1534.