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2Q41

Ensemble refinement of the protein crystal structure of spermidine synthase from Arabidopsis thaliana gene At1g23820

Functional Information from GO Data
ChainGOidnamespacecontents
A0003824molecular_functioncatalytic activity
A0004766molecular_functionspermidine synthase activity
A0005515molecular_functionprotein binding
A0005634cellular_componentnucleus
A0005829cellular_componentcytosol
A0006595biological_processpolyamine metabolic process
A0006596biological_processpolyamine biosynthetic process
A0008295biological_processspermidine biosynthetic process
A0016740molecular_functiontransferase activity
B0003824molecular_functioncatalytic activity
B0004766molecular_functionspermidine synthase activity
B0005515molecular_functionprotein binding
B0005634cellular_componentnucleus
B0005829cellular_componentcytosol
B0006595biological_processpolyamine metabolic process
B0006596biological_processpolyamine biosynthetic process
B0008295biological_processspermidine biosynthetic process
B0016740molecular_functiontransferase activity
C0003824molecular_functioncatalytic activity
C0004766molecular_functionspermidine synthase activity
C0005515molecular_functionprotein binding
C0005634cellular_componentnucleus
C0005829cellular_componentcytosol
C0006595biological_processpolyamine metabolic process
C0006596biological_processpolyamine biosynthetic process
C0008295biological_processspermidine biosynthetic process
C0016740molecular_functiontransferase activity
D0003824molecular_functioncatalytic activity
D0004766molecular_functionspermidine synthase activity
D0005515molecular_functionprotein binding
D0005634cellular_componentnucleus
D0005829cellular_componentcytosol
D0006595biological_processpolyamine metabolic process
D0006596biological_processpolyamine biosynthetic process
D0008295biological_processspermidine biosynthetic process
D0016740molecular_functiontransferase activity
Functional Information from PROSITE/UniProt
site_idPS01330
Number of Residues14
DetailsPABS_1 Polyamine biosynthesis (PABS) domain signature. VLVIGGGdGgvLrE
ChainResidueDetails
AVAL124-GLU137

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsActive site: {"description":"Proton acceptor","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues42
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
AASP201
AGLY128

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
BASP201
BGLY128

site_idCSA3
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
CASP201
CGLY128

site_idCSA4
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qam
ChainResidueDetails
DASP201
DGLY128

239803

PDB entries from 2025-08-06

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