Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad3p9ka1 All alpha proteins DNA/RNA-binding 3-helical bundle 'Winged helix' DNA-binding domain automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Ad3p9ka2 Alpha and beta proteins (a/b) S-adenosyl-L-methionine-dependent methyltransferases S-adenosyl-L-methionine-dependent methyltransferases automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Bd3p9kb1 All alpha proteins DNA/RNA-binding 3-helical bundle 'Winged helix' DNA-binding domain automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Bd3p9kb2 Alpha and beta proteins (a/b) S-adenosyl-L-methionine-dependent methyltransferases S-adenosyl-L-methionine-dependent methyltransferases automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Cd3p9kc1 All alpha proteins DNA/RNA-binding 3-helical bundle 'Winged helix' DNA-binding domain automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Cd3p9kc2 Alpha and beta proteins (a/b) S-adenosyl-L-methionine-dependent methyltransferases S-adenosyl-L-methionine-dependent methyltransferases automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Dd3p9kd1 All alpha proteins DNA/RNA-binding 3-helical bundle 'Winged helix' DNA-binding domain automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)
Dd3p9kd2 Alpha and beta proteins (a/b) S-adenosyl-L-methionine-dependent methyltransferases S-adenosyl-L-methionine-dependent methyltransferases automated matches automated matches perennial ryegrass (Lolium perenne ) [TaxId: 4522 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8093275 3000118 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyWinged helix DNA-binding domain 8093274 3000034 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8093275 3000118 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyWinged helix DNA-binding domain 8093274 3000034 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyWinged helix DNA-binding domain 8093274 3000034 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8093275 3000118 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyWinged helix DNA-binding domain 8093274 3000034 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyS-adenosyl-L-methionine-dependent methyltransferases 8093275 3000118 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ADimerisatione3p9kA1 A: alpha arraysX: HTHH: HTHT: wingedF: DimerisationECOD (1.6)
AMethyltransf_11_4e3p9kA2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: Methyltransf_11_4ECOD (1.6)
BDimerisatione3p9kB1 A: alpha arraysX: HTHH: HTHT: wingedF: DimerisationECOD (1.6)
BMethyltransf_11_4e3p9kB2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: Methyltransf_11_4ECOD (1.6)
CDimerisatione3p9kC1 A: alpha arraysX: HTHH: HTHT: wingedF: DimerisationECOD (1.6)
CMethyltransf_11_4e3p9kC2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: Methyltransf_11_4ECOD (1.6)
DDimerisatione3p9kD1 A: alpha arraysX: HTHH: HTHT: wingedF: DimerisationECOD (1.6)
DMethyltransf_11_4e3p9kD2 A: a/b three-layered sandwichesX: Rossmann-likeH: Rossmann-relatedT: S-adenosyl-L-methionine-dependent methyltransferasesF: Methyltransf_11_4ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D
PF08100Plant O-methyltransferase dimerisation domain (Dimerisation)Plant O-methyltransferase dimerisation domainThis domain is found at the N-terminus of plant O-methyltransferases involved in phenylpropanoid metabolism, including caffeic acid O-methyltransferase (COMT), isoflavone O-methyltransferase (IOMT), and chalcone O-methyltransferase (ChOMT). It media ...This domain is found at the N-terminus of plant O-methyltransferases involved in phenylpropanoid metabolism, including caffeic acid O-methyltransferase (COMT), isoflavone O-methyltransferase (IOMT), and chalcone O-methyltransferase (ChOMT). It mediates dimerisation of these enzymes, which is critical for their activity [1-4]. The dimerisation domain forms the central core of the homodimer, with the SAM-binding domains located peripherally [1,3,4]. Dimerisation buries ~30% of the total surface area of the dimer [3]. The domain also contributes to forming the back wall of the substrate binding cavity of the partner monomer [2-4]. Structurally, the dimerisation domain consists primarily of alpha-helices [1-4]. Crystal structures reveal the domain is relatively rigid compared to the more mobile SAM-binding domain, which undergoes conformational changes upon substrate binding [4].
Domain
A, B, C, D
PF00891O-methyltransferase domain (Methyltransf_2)O-methyltransferase domainThis family includes a range of O-methyltransferases. These enzymes utilise S-adenosyl methionine. Domain