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1SG9

Crystal structure of Thermotoga maritima protein HEMK, an N5-glutamine methyltransferase

Functional Information from GO Data
ChainGOidnamespacecontents
A0003676molecular_functionnucleic acid binding
A0006415biological_processtranslational termination
A0006479biological_processprotein methylation
A0008168molecular_functionmethyltransferase activity
A0008170molecular_functionN-methyltransferase activity
A0008276molecular_functionprotein methyltransferase activity
A0008757molecular_functionS-adenosylmethionine-dependent methyltransferase activity
A0016740molecular_functiontransferase activity
A0032259biological_processmethylation
A0036009molecular_functionprotein-glutamine N-methyltransferase activity
A0102559molecular_functionpeptide chain release factor N(5)-glutamine methyltransferase activity
B0003676molecular_functionnucleic acid binding
B0006415biological_processtranslational termination
B0006479biological_processprotein methylation
B0008168molecular_functionmethyltransferase activity
B0008170molecular_functionN-methyltransferase activity
B0008276molecular_functionprotein methyltransferase activity
B0008757molecular_functionS-adenosylmethionine-dependent methyltransferase activity
B0016740molecular_functiontransferase activity
B0032259biological_processmethylation
B0036009molecular_functionprotein-glutamine N-methyltransferase activity
B0102559molecular_functionpeptide chain release factor N(5)-glutamine methyltransferase activity
C0003676molecular_functionnucleic acid binding
C0006415biological_processtranslational termination
C0006479biological_processprotein methylation
C0008168molecular_functionmethyltransferase activity
C0008170molecular_functionN-methyltransferase activity
C0008276molecular_functionprotein methyltransferase activity
C0008757molecular_functionS-adenosylmethionine-dependent methyltransferase activity
C0016740molecular_functiontransferase activity
C0032259biological_processmethylation
C0036009molecular_functionprotein-glutamine N-methyltransferase activity
C0102559molecular_functionpeptide chain release factor N(5)-glutamine methyltransferase activity
Functional Information from PDB Data
site_idAC1
Number of Residues21
DetailsBINDING SITE FOR RESIDUE SAM A 301
ChainResidue
APHE100
AGLU179
APHE180
AASN197
AGLU217
AALA218
AGLN400
AHOH401
AHOH404
AHOH405
AHOH415
APRO102
AHOH421
AHOH444
ATHR106
AILE128
AGLY129
ATHR130
AILE135
AASP151
AVAL152

site_idAC2
Number of Residues19
DetailsBINDING SITE FOR RESIDUE SAM B 302
ChainResidue
BPHE100
BPRO102
BTHR106
BGLY129
BTHR130
BILE135
BASP151
BVAL152
BGLU179
BPHE180
BASN197
BGLU217
BALA218
BGLN401
BHOH405
BHOH406
BHOH408
BHOH420
BHOH468

site_idAC3
Number of Residues19
DetailsBINDING SITE FOR RESIDUE SAM C 303
ChainResidue
CPHE100
CPRO102
CGLY129
CTHR130
CGLY131
CALA134
CASP151
CGLU179
CPHE180
CASN197
CGLU217
CALA218
CGLN402
CHOH405
CHOH407
CHOH408
CHOH410
CHOH413
CHOH414

site_idAC4
Number of Residues7
DetailsBINDING SITE FOR RESIDUE GLN A 400
ChainResidue
APHE100
AARG103
AASN197
APRO198
ATYR200
ASAM301
AHOH496

site_idAC5
Number of Residues10
DetailsBINDING SITE FOR RESIDUE GLN B 401
ChainResidue
BPHE100
BARG103
BASN197
BPRO198
BTYR200
BGLU246
BSAM302
BHOH416
BHOH477
BHOH478

site_idAC6
Number of Residues7
DetailsBINDING SITE FOR RESIDUE GLN C 402
ChainResidue
CPHE100
CARG103
CASN197
CPRO198
CTYR200
CSAM303
CHOH416

Functional Information from PROSITE/UniProt
site_idPS00092
Number of Residues7
DetailsN6_MTASE N-6 Adenine-specific DNA methylases signature. ILSNPPY
ChainResidueDetails
AILE194-TYR200

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues21
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues9
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"18247349","evidenceCode":"ECO:0000269"},{"source":"Reference","evidenceCode":"ECO:0000269","citation":{"citationType":"submission","publicationDate":"JUL-2011","submissionDatabase":"PDB data bank","title":"Crystal structure of N5-glutamine methyltransferase, HemK(EC 2.1.1.-) (TM0488) from Thermotoga maritima at 2.80 A resolution.","authoringGroup":["Joint Center for Structural Genomics (JCSG)"]}}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
AASP151
AASN197
AGLY129

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
BASP151
BASN197
BGLY129

site_idCSA3
Number of Residues3
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
CASP151
CASN197
CGLY129

site_idMCSA1
Number of Residues3
DetailsM-CSA 703
ChainResidueDetails
APHE100electrostatic stabiliser
AASN197electrostatic stabiliser
APRO198electrostatic stabiliser

site_idMCSA2
Number of Residues3
DetailsM-CSA 703
ChainResidueDetails
BPHE100electrostatic stabiliser
BASN197electrostatic stabiliser
BPRO198electrostatic stabiliser

site_idMCSA3
Number of Residues3
DetailsM-CSA 703
ChainResidueDetails
CPHE100electrostatic stabiliser
CASN197electrostatic stabiliser
CPRO198electrostatic stabiliser

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PDB entries from 2025-12-10

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