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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：P21866 New Search
6PDB entries
7Biological assembly
15chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
P21866 1zh2 KDP operon transcriptional regulatory protein kdpE Author chain A Reference sequence 1–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 1zh2 KDP operon transcriptional regulatory protein kdpE Author chain B Reference sequence 1–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 1zh4 KDP operon transcriptional regulatory protein kdpE Author chain A Reference sequence 1–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 1zh4 KDP operon transcriptional regulatory protein kdpE Author chain B Reference sequence 1–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 3zq7 KDP OPERON TRANSCRIPTIONAL REGULATORY PROTEIN KDPE Author chain A Reference sequence 124–225 1 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
P21866 4kfc KDP operon transcriptional regulatory protein KdpE Author chain A Reference sequence 3–225 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P21866 4kfc KDP operon transcriptional regulatory protein KdpE Author chain B Reference sequence 3–225 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P21866 4kny KDP operon transcriptional regulatory protein KdpE Author chain A Reference sequence 3–225 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P21866 4kny KDP operon transcriptional regulatory protein KdpE Author chain B Reference sequence 3–225 1 Protein–DNA Homooligomer Protein 2 DNA 2 tetrameric （4） Consistent with all polymers
P21866 4l85 KDP operon transcriptional regulatory protein KdpE Author chain A Reference sequence 3–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 4l85 KDP operon transcriptional regulatory protein KdpE Author chain B Reference sequence 3–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 4l85 KDP operon transcriptional regulatory protein KdpE Author chain C Reference sequence 3–121 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 4l85 KDP operon transcriptional regulatory protein KdpE Author chain A Reference sequence 3–121 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 4l85 KDP operon transcriptional regulatory protein KdpE Author chain B Reference sequence 3–121 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
P21866 4l85 KDP operon transcriptional regulatory protein KdpE Author chain C Reference sequence 3–121 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count

“Homomeric versus heteromeric classification follows protein identity; different constructs of the same UniProt entry still require comparison of reference-sequence ranges, mutations and missing segments. Assemblies marked for review remain visible but are not included in the highest-confidence candidate set.