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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：Q99KK2 New Search
2PDB entries
3Biological assembly
10chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain A Reference sequence 40–268 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain B Reference sequence 40–268 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain C Reference sequence 40–268 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain D Reference sequence 40–268 1 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain A Reference sequence 40–268 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain B Reference sequence 40–268 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain C Reference sequence 40–268 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 1qwj cytidine monophospho-N-acetylneuraminic acid synthetase Author chain D Reference sequence 40–268 2 Protein homooligomer Homooligomer Protein 2 dimeric （2） Consistent with protein count
Q99KK2 3ewi N-acylneuraminate cytidylyltransferase Author chain A Reference sequence 267–432 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
Q99KK2 3ewi N-acylneuraminate cytidylyltransferase Author chain B Reference sequence 267–432 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） 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.