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Structural insights of MAT enzymes: MATa2b complexed with adenosine and pyrophosphate

Functional Information from GO Data
ChainGOidnamespacecontents
A0000166molecular_functionnucleotide binding
A0004478molecular_functionmethionine adenosyltransferase activity
A0005515molecular_functionprotein binding
A0005524molecular_functionATP binding
A0005829cellular_componentcytosol
A0006556biological_processS-adenosylmethionine biosynthetic process
A0006730biological_processone-carbon metabolic process
A0016740molecular_functiontransferase activity
A0034214biological_processprotein hexamerization
A0036094molecular_functionsmall molecule binding
A0042802molecular_functionidentical protein binding
A0046872molecular_functionmetal ion binding
A0048269cellular_componentmethionine adenosyltransferase complex
A0051259biological_processprotein complex oligomerization
A0051291biological_processprotein heterooligomerization
A0061431biological_processcellular response to methionine
A1904263biological_processpositive regulation of TORC1 signaling
B0000166molecular_functionnucleotide binding
B0004478molecular_functionmethionine adenosyltransferase activity
B0005515molecular_functionprotein binding
B0005524molecular_functionATP binding
B0005829cellular_componentcytosol
B0006556biological_processS-adenosylmethionine biosynthetic process
B0006730biological_processone-carbon metabolic process
B0016740molecular_functiontransferase activity
B0034214biological_processprotein hexamerization
B0036094molecular_functionsmall molecule binding
B0042802molecular_functionidentical protein binding
B0046872molecular_functionmetal ion binding
B0048269cellular_componentmethionine adenosyltransferase complex
B0051259biological_processprotein complex oligomerization
B0051291biological_processprotein heterooligomerization
B0061431biological_processcellular response to methionine
B1904263biological_processpositive regulation of TORC1 signaling
C0000166molecular_functionnucleotide binding
C0004478molecular_functionmethionine adenosyltransferase activity
C0005515molecular_functionprotein binding
C0005524molecular_functionATP binding
C0005829cellular_componentcytosol
C0006556biological_processS-adenosylmethionine biosynthetic process
C0006730biological_processone-carbon metabolic process
C0016740molecular_functiontransferase activity
C0034214biological_processprotein hexamerization
C0036094molecular_functionsmall molecule binding
C0042802molecular_functionidentical protein binding
C0046872molecular_functionmetal ion binding
C0048269cellular_componentmethionine adenosyltransferase complex
C0051259biological_processprotein complex oligomerization
C0051291biological_processprotein heterooligomerization
C0061431biological_processcellular response to methionine
C1904263biological_processpositive regulation of TORC1 signaling
D0000166molecular_functionnucleotide binding
D0004478molecular_functionmethionine adenosyltransferase activity
D0005515molecular_functionprotein binding
D0005524molecular_functionATP binding
D0005829cellular_componentcytosol
D0006556biological_processS-adenosylmethionine biosynthetic process
D0006730biological_processone-carbon metabolic process
D0016740molecular_functiontransferase activity
D0034214biological_processprotein hexamerization
D0036094molecular_functionsmall molecule binding
D0042802molecular_functionidentical protein binding
D0046872molecular_functionmetal ion binding
D0048269cellular_componentmethionine adenosyltransferase complex
D0051259biological_processprotein complex oligomerization
D0051291biological_processprotein heterooligomerization
D0061431biological_processcellular response to methionine
D1904263biological_processpositive regulation of TORC1 signaling
E0005515molecular_functionprotein binding
E0005634cellular_componentnucleus
E0005829cellular_componentcytosol
E0006556biological_processS-adenosylmethionine biosynthetic process
E0006730biological_processone-carbon metabolic process
E0019899molecular_functionenzyme binding
E0030234molecular_functionenzyme regulator activity
E0048269cellular_componentmethionine adenosyltransferase complex
E0070062cellular_componentextracellular exosome
F0005515molecular_functionprotein binding
F0005634cellular_componentnucleus
F0005829cellular_componentcytosol
F0006556biological_processS-adenosylmethionine biosynthetic process
F0006730biological_processone-carbon metabolic process
F0019899molecular_functionenzyme binding
F0030234molecular_functionenzyme regulator activity
F0048269cellular_componentmethionine adenosyltransferase complex
F0070062cellular_componentextracellular exosome
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE EDO A 401
ChainResidue
APHE333
AHIS334
ATYR335
BGLN190
FTHR320
FVAL321

site_idAC2
Number of Residues1
DetailsBINDING SITE FOR RESIDUE EDO A 402
ChainResidue
ALYS81

site_idAC3
Number of Residues10
DetailsBINDING SITE FOR RESIDUE ADN A 403
ChainResidue
AASP179
ASER247
AARG249
APHE250
AASP258
BASP116
BASP134
BILE322
AHIS29
APRO30

site_idAC4
Number of Residues7
DetailsBINDING SITE FOR RESIDUE PO4 A 404
ChainResidue
AHIS29
AASP31
AASP258
AARG264
ALYS265
BLYS285
BASP291

site_idAC5
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EDO B 401
ChainResidue
ALEU19
BILE330
BSER331
BILE332
BGLU342

site_idAC6
Number of Residues3
DetailsBINDING SITE FOR RESIDUE EDO B 402
ChainResidue
BTYR79
BVAL108
DVAL108

site_idAC7
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EDO B 403
ChainResidue
BGLN80
BARG84
BASN105
BVAL106
CLYS61
CTHR62
DGLU111

site_idAC8
Number of Residues4
DetailsBINDING SITE FOR RESIDUE EDO B 404
ChainResidue
AGLY257
BGLU70
BGLN113
BILE117

site_idAC9
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EDO C 401
ChainResidue
CMET138
CPHE139
CTYR271
CALA276
CHIS277

site_idBC1
Number of Residues14
DetailsBINDING SITE FOR RESIDUE ADN C 403
ChainResidue
CHIS29
CASP179
CLYS181
CSER247
CARG249
CPHE250
CILE252
CASP258
CPOP404
DASP116
DILE117
DASP134
DILE322
DEDO402

site_idBC2
Number of Residues11
DetailsBINDING SITE FOR RESIDUE POP C 404
ChainResidue
CGLU23
CHIS29
CASP31
CLYS181
CASP258
CLYS265
CADN403
DASP134
DGLN135
DASP291
DMG404

site_idBC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE EDO D 401
ChainResidue
ALYS102
DSER95
DGLN256

site_idBC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE EDO D 402
ChainResidue
CGLY257
CADN403
DGLN113
DLYS289

site_idBC5
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EDO D 403
ChainResidue
CTHR17
CPHE18
DSER331
DGLU342
DLEU346

site_idBC6
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG D 404
ChainResidue
CARG264
CPOP404
DGLY279
DALA281
DLYS285

site_idBC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EDO E 401
ChainResidue
EPRO88
EALA185
EARG208
ELYS247
EARG278

Functional Information from PROSITE/UniProt
site_idPS00376
Number of Residues11
DetailsADOMET_SYNTHASE_1 S-adenosylmethionine synthase signature 1. GAGDQGlmfGY
ChainResidueDetails
AGLY131-TYR141

site_idPS00377
Number of Residues9
DetailsADOMET_SYNTHASE_2 S-adenosylmethionine synthase signature 2. GGGAFSgKD
ChainResidueDetails
AGLY278-ASP286

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues8
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"26858410","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A19","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"26858410","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4KTT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A19","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1G","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1I","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P0A817","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues4
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues8
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"26858410","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4KTT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A19","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1G","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1I","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues12
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"26858410","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4KTT","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1G","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1I","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"26858410","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5A1I","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues8
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"26858410","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"4NDN","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI11
Number of Residues4
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"UniProtKB","id":"P0A817","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI12
Number of Residues4
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"PubMed","id":"19608861","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI13
Number of Residues4
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"18669648","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI14
Number of Residues4
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI15
Number of Residues12
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)","evidences":[{"source":"PubMed","id":"28112733","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI16
Number of Residues24
DetailsRegion: {"description":"Flexible loop","evidences":[{"source":"UniProtKB","id":"P0A817","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI17
Number of Residues30
DetailsRegion: {"description":"Required for interaction with MAT2A","evidences":[{"source":"PubMed","id":"25075345","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI18
Number of Residues20
DetailsBinding site: {"evidences":[{"source":"PDB","id":"2YDX","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI19
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"23186163","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues14
DetailsM-CSA 9
ChainResidueDetails
AHIS29proton acceptor, proton donor
AARG264electrostatic stabiliser
ALYS265electrostatic stabiliser
ALYS285electrostatic stabiliser
ALYS289electrostatic stabiliser
AASP291electrostatic stabiliser
AASP31electrostatic stabiliser, metal ligand
ALYS32electrostatic stabiliser
AGLU57metal ligand
AGLU70electrostatic stabiliser, steric role
ALYS181electrostatic stabiliser
APHE250steric role
AASP258electrostatic stabiliser, metal ligand, steric role
AALA259metal ligand

site_idMCSA2
Number of Residues14
DetailsM-CSA 9
ChainResidueDetails
BHIS29proton acceptor, proton donor
BARG264electrostatic stabiliser
BLYS265electrostatic stabiliser
BLYS285electrostatic stabiliser
BLYS289electrostatic stabiliser
BASP291electrostatic stabiliser
BASP31electrostatic stabiliser, metal ligand
BLYS32electrostatic stabiliser
BGLU57metal ligand
BGLU70electrostatic stabiliser, steric role
BLYS181electrostatic stabiliser
BPHE250steric role
BASP258electrostatic stabiliser, metal ligand, steric role
BALA259metal ligand

site_idMCSA3
Number of Residues14
DetailsM-CSA 9
ChainResidueDetails
CHIS29proton acceptor, proton donor
CARG264electrostatic stabiliser
CLYS265electrostatic stabiliser
CLYS285electrostatic stabiliser
CLYS289electrostatic stabiliser
CASP291electrostatic stabiliser
CASP31electrostatic stabiliser, metal ligand
CLYS32electrostatic stabiliser
CGLU57metal ligand
CGLU70electrostatic stabiliser, steric role
CLYS181electrostatic stabiliser
CPHE250steric role
CASP258electrostatic stabiliser, metal ligand, steric role
CALA259metal ligand

site_idMCSA4
Number of Residues14
DetailsM-CSA 9
ChainResidueDetails
DHIS29proton acceptor, proton donor
DARG264electrostatic stabiliser
DLYS265electrostatic stabiliser
DLYS285electrostatic stabiliser
DLYS289electrostatic stabiliser
DASP291electrostatic stabiliser
DASP31electrostatic stabiliser, metal ligand
DLYS32electrostatic stabiliser
DGLU57metal ligand
DGLU70electrostatic stabiliser, steric role
DLYS181electrostatic stabiliser
DPHE250steric role
DASP258electrostatic stabiliser, metal ligand, steric role
DALA259metal ligand

249697

PDB entries from 2026-02-25

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