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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：O88703 New Search
15PDB entries
25Biological assembly
48chain/assembly records
UNP PDB Protein and construct Assembly Composition class Protein state Molecular copy count PDB declaration Consistency status
O88703 1q3e Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q3e Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q3e Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 2 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q3e Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 2 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q3e Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 3 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 1q3e Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 3 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 2 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 2 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 3 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 3 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 4 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q43 Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–645 4 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 1q5o Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–645 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 2 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 2 Protein monomer Monomer Protein 1 monomeric （1） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 3 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 3 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 4 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 2q0a Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 4 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3bpz Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3bpz Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3bpz Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain C Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3bpz Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain D Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3etq Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 3etq Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 8 octameric （8） Consistent with protein count
O88703 3ffq Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3ffq Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3ffq Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–640 2 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 3ffq Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–640 2 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 4eqf Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 857–863 1 Protein heterocomplex Heteromer Protein 2 dimeric （2） Consistent with protein count
O88703 5jon Maltose-binding periplasmic protein,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 494–640 1 Insufficient information Monomer Protein 1 其他 1 monomeric （1） Consistent with protein count
O88703 5jon Maltose-binding periplasmic protein,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 494–640 1 Insufficient information Monomer Protein 1 其他 1 monomeric （1） Consistent with protein count
O88703 5jon Maltose-binding periplasmic protein,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 494–640 2 Insufficient information Monomer Protein 1 其他 1 monomeric （1） Consistent with protein count
O88703 5jon Maltose-binding periplasmic protein,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 494–640 2 Insufficient information Monomer Protein 1 其他 1 monomeric （1） Consistent with protein count
O88703 5khg Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–643 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 5khh Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–643 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 5khi Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–643 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 5khj Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–643 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 5khj Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain B Reference sequence 443–643 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 5khk Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2 Author chain A Reference sequence 443–643 1 Protein homooligomer Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 9r1t ;Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,HCN112 holo, in complex with cAMP ; Author chain A Reference sequence 444–647 1 Insufficient information Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 9r1t ;Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,HCN112 holo, in complex with cAMP ; Author chain B Reference sequence 444–647 1 Insufficient information Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 9r1t ;Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,HCN112 holo, in complex with cAMP ; Author chain C Reference sequence 444–647 1 Insufficient information Homooligomer Protein 4 tetrameric （4） Consistent with protein count
O88703 9r1t ;Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1,Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 2,HCN112 holo, in complex with cAMP ; Author chain D Reference sequence 444–647 1 Insufficient information 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.