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2O0L

Human spermidine synthase

Functional Information from GO Data
ChainGOidnamespacecontents
A0003824molecular_functioncatalytic activity
A0004766molecular_functionspermidine synthase activity
A0005515molecular_functionprotein binding
A0005829cellular_componentcytosol
A0006595biological_processpolyamine metabolic process
A0006596biological_processpolyamine biosynthetic process
A0006597biological_processspermine biosynthetic process
A0008295biological_processspermidine biosynthetic process
A0016740molecular_functiontransferase activity
A0042802molecular_functionidentical protein binding
A0042803molecular_functionprotein homodimerization activity
B0003824molecular_functioncatalytic activity
B0004766molecular_functionspermidine synthase activity
B0005515molecular_functionprotein binding
B0005829cellular_componentcytosol
B0006595biological_processpolyamine metabolic process
B0006596biological_processpolyamine biosynthetic process
B0006597biological_processspermine biosynthetic process
B0008295biological_processspermidine biosynthetic process
B0016740molecular_functiontransferase activity
B0042802molecular_functionidentical protein binding
B0042803molecular_functionprotein homodimerization activity
Functional Information from PDB Data
site_idAC1
Number of Residues17
DetailsBINDING SITE FOR RESIDUE S4M A 501
ChainResidue
AGLN49
AILE125
AASP126
AVAL129
AGLY154
AASP155
AGLY156
AASP173
ATYR241
AGLN70
ATYR79
AGLN80
AGLY101
AGLY103
AASP104
ACYS123
AGLU124

site_idAC2
Number of Residues22
DetailsBINDING SITE FOR RESIDUE S4M A 502
ChainResidue
BGLN49
BLEU65
BGLN70
BGLN80
BGLY101
BGLY103
BASP104
BCYS123
BGLU124
BILE125
BASP126
BVAL129
BGLY154
BASP155
BGLY156
BASP173
BSER175
BPRO180
BALA181
BSER183
BLEU184
BTYR241

Functional Information from PROSITE/UniProt
site_idPS01330
Number of Residues14
DetailsPABS_1 Polyamine biosynthesis (PABS) domain signature. VLIIGGGdGgvLrE
ChainResidueDetails
AVAL97-GLU110

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Proton acceptor","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues19
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues235
DetailsDomain: {"description":"PABS"}
ChainResidueDetails

246704

PDB entries from 2025-12-24

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