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2Q41

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

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
Spermidine synthase 1polymer33436921.44UniProt (Q9ZUB3)
Pfam (PF17284)
Pfam (PF01564)
Arabidopsis thaliana (thale cress)Putrescine aminopropyltransferase 1, SPDSY 1
2E, F, G, H
(A, B, C, D)
waterwater18.0576Chemie (HOH)
Sequence modifications
A, B, C, D: 2 - 334 (UniProt: Q9ZUB3)
PDBExternal DatabaseDetails
Ser 1-expression tag
Mse 26Met 26modified residue
Mse 51Met 51modified residue
Mse 54Met 54modified residue
Mse 109Met 109modified residue
Mse 149Met 149modified residue
Mse 155Met 155modified residue
Mse 242Met 242modified residue
Mse 278Met 278modified residue
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight147685.7
All*Total formula weight147685.7
*Water molecules are not included.

239492

PDB entries from 2025-07-30

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