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2P9H

High resolution structure of the Lactose Repressor bound to IPTG

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Lactose operon repressorpolymer26928756.92UniProt (P03023)
Pfam (PF13377)
Escherichia coli
2C, D
(A, B)
1-methylethyl 1-thio-beta-D-galactopyranosidenon-polymer238.32Chemie (IPT)
3E, F
(A, B)
waterwater18.0738Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight57513.9
Non-Polymers*Number of molecules2
Total formula weight476.6
All*Total formula weight57990.5
*Water molecules are not included.

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PDB entries from 2025-06-18

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