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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：P61045 New Search
7PDB entries
7Biological assembly
14chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion Different experimental conditions Different structure-quality metrics

Difference tags compare only the current result set; every original PDB and assembly record remains separate.

Related-Structure Differences

Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.

PDB Entry Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Experimental Method Experimental Conditions Structure Quality
6RQF 3.6 Angstrom cryo-EM structure of the dimeric cytochrome b6f complex from Spinacia oleracea with natively bound thylakoid lipids and plastoquinone molecules Deposited 2019-05-15 Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric（16） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 CLA CHLOROPHYLL A × 2 BCR BETA-CAROTENE × 2 PL9 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE × 3 6PL (4S,7R)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSAN-1-AMINIUM 4-OXIDE × 3 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 2 PGV (1R)-2-{[{[(2S)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL (11E)-OCTADEC-11-ENOATE × 4 FES FE2/S2 (INORGANIC) CLUSTER × 2 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.58 Å
7QRM Cryo-EM structure of catalytically active Spinacia oleracea cytochrome b6f in complex with endogenous plastoquinones at 2.7 A resolution Deposited 2022-01-11 Assembly 1 Protein heterocomplex Heteromer；Protein × 16 PDB declaration: hexadecameric（16） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 CLA CHLOROPHYLL A × 2 PL9 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE × 7 UMQ UNDECYL-MALTOSIDE × 10 PGT (1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE × 4 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 BCR BETA-CAROTENE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
7ZYV Cryo-EM structure of catalytically active Spinacia oleracea cytochrome b6f in complex with endogenous plastoquinones at 2.13 A resolution Deposited 2022-05-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric（18） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 CLA CHLOROPHYLL A × 2 UMQ UNDECYL-MALTOSIDE × 10 PL9 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE × 6 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 BCR BETA-CAROTENE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8；Buffer and the diluted protein sample were filtered through a 0.22 um syringe filter. Prior to freezing, protein sample was concentrated on centrifugal filter units with 50K MWCO.
cryo-EM vitrification conditions Cryogen ETHANE；blot time 2 s, wait time 0 s, blot force -1
Resolution 2.13 Å
9ES7 Cryo-EM structure of Spinacia oleracea cytochrome b6f complex with water molecules at 1.94 A resolution Deposited 2024-03-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: 18-meric（18） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 UMQ UNDECYL-MALTOSIDE × 4 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 2 CLA CHLOROPHYLL A × 2 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 BCR BETA-CAROTENE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 1.94 Å
9ES8 Cryo-EM structure of Spinacia oleracea cytochrome b6f with decylplastoquinone bound at plastoquionol reduction site Deposited 2024-03-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric（18） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 A1H65 Decylplastoquinone × 2 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 2 CLA CHLOROPHYLL A × 2 UMQ UNDECYL-MALTOSIDE × 4 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 BCR BETA-CAROTENE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7；final concentration of plastocyanin was 0.34 mM
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.24 Å
9ES9 Cryo-EM structure of Spinacia oleracea cytochrome b6f complex with inhibitor DBMIB bound at plastoquinol oxidation site Deposited 2024-03-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: 18-meric（18） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 UMQ UNDECYL-MALTOSIDE × 4 LMG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE × 2 BNT 2,5-DIBROMO-3-ISOPROPYL-6-METHYLBENZO-1,4-QUINONE × 2 CLA CHLOROPHYLL A × 2 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 BCR BETA-CAROTENE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.33 Å
9TGG Cryo-EM structure of Spinacia oleracea cytochrome b6f complex with bound plastocyanin Deposited 2025-12-01 Assembly 1 Protein heterocomplex Heteromer；Protein × 17 PDB declaration: 17-meric（17） Consistent with protein count
Chain H 1–29（29 aa）
Chain P 1–29（29 aa）
Not recorded HEM PROTOPORPHYRIN IX CONTAINING FE × 4 HEC HEME C × 4 UMQ UNDECYL-MALTOSIDE × 6 PL9 2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE × 7 CLA CHLOROPHYLL A × 2 FES FE2/S2 (INORGANIC) CLUSTER × 2 SQD 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL × 2 BCR BETA-CAROTENE × 2 CU COPPER (II) ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.18 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.