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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：P02730 New Search
54PDB entries
57Biological assembly
116chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification Different assembly state Different ligand/ion Different experimental method 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
1BH7 A LOW ENERGY STRUCTURE FOR THE FINAL CYTOPLASMIC LOOP OF BAND 3, NMR, MINIMIZED AVERAGE STRUCTURE Deposited 1998-06-16 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 803–835（33 aa） Fragment：FINAL CYTOPLASMIC LOOP
Not recorded No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.5；298 K；Ionic strength (raw mmCIF value) 12mM；Pressure ATMOSPHERIC
NMR sample composition 30% TFE-D3/H2O
Resolution not provided
1BNX STRUCTURAL STUDIES ON THE EFFECTS OF THE DELETION IN THE RED CELL ANION EXCHANGER (BAND3, AE1) ASSOCIATED WITH SOUTH EAST ASIAN OVALOCYTOSIS. Deposited 1998-07-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 388–429（42 aa） Fragment：C-TERMINAL CYTOPLASM/FIRST MEMBRANE SPAN
Mutation：A400-A408 DELETION Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.5；298 K；Pressure 1
Resolution not provided
1BTQ THE SOLUTION STRUCTURES OF THE FIRST AND SECOND TRANSMEMBRANE-SPANNING SEGMENTS OF BAND 3 Deposited 1994-08-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 405–424（20 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1BTR THE SOLUTION STRUCTURES OF THE FIRST AND SECOND TRANSMEMBRANE-SPANNING SEGMENTS OF BAND 3 Deposited 1993-05-25 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 405–424（20 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1BTS THE SOLUTION STRUCTURES OF THE FIRST AND SECOND TRANSMEMBRANE-SPANNING SEGMENTS OF BAND 3 Deposited 1994-08-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 436–456（21 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1BTT THE SOLUTION STRUCTURES OF THE FIRST AND SECOND TRANSMEMBRANE-SPANNING SEGMENTS OF BAND 3 Deposited 1994-08-03 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 436–456（21 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
1BZK STRUCTURAL STUDIES ON THE EFFECTS OF THE DELETION IN THE RED CELL ANION EXCHANGER (BAND3, AE1) ASSOCIATED WITH SOUTH EAST ASIAN OVALOCYTOSIS. Deposited 1998-11-01 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 389–430（42 aa） Fragment：C-TERMINAL CYTOPLASM/FIRST MEMBRANE SPAN
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 3.5；298 K；Pressure 1
Resolution not provided
1HYN CRYSTAL STRUCTURE OF THE CYTOPLASMIC DOMAIN OF HUMAN ERYTHROCYTE BAND-3 PROTEIN Deposited 2001-01-20 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain P 1–379（379 aa）
Chain Q 1–379（379 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.8；METHOD: SITTING DROP VAPOR DIFFUSION WITH SEEDING. TEMPERATURE: 293 K. RESERVOIR: 50-53% SATURATED AMMONIUM SULFATE, 150mM SODIUM CITRATE PH 4.8. PROTEIN: 7 mg/ml PROTEIN IN 5mM SODIUM PHOSPHATE PH 6.8, 10 mM SODIUM CHLORIDE.
Resolution 2.60 Å R-free 0.290
1HYN CRYSTAL STRUCTURE OF THE CYTOPLASMIC DOMAIN OF HUMAN ERYTHROCYTE BAND-3 PROTEIN Deposited 2001-01-20 Assembly 2 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain R 1–379（379 aa）
Chain S 1–379（379 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.8；METHOD: SITTING DROP VAPOR DIFFUSION WITH SEEDING. TEMPERATURE: 293 K. RESERVOIR: 50-53% SATURATED AMMONIUM SULFATE, 150mM SODIUM CITRATE PH 4.8. PROTEIN: 7 mg/ml PROTEIN IN 5mM SODIUM PHOSPHATE PH 6.8, 10 mM SODIUM CHLORIDE.
Resolution 2.60 Å R-free 0.290
1HYN CRYSTAL STRUCTURE OF THE CYTOPLASMIC DOMAIN OF HUMAN ERYTHROCYTE BAND-3 PROTEIN Deposited 2001-01-20 Assembly 3 Protein homooligomer Homooligomer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain P 1–379（379 aa）
Chain Q 1–379（379 aa）
Chain R 1–379（379 aa）
Chain S 1–379（379 aa）
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions pH 4.8；METHOD: SITTING DROP VAPOR DIFFUSION WITH SEEDING. TEMPERATURE: 293 K. RESERVOIR: 50-53% SATURATED AMMONIUM SULFATE, 150mM SODIUM CITRATE PH 4.8. PROTEIN: 7 mg/ml PROTEIN IN 5mM SODIUM PHOSPHATE PH 6.8, 10 mM SODIUM CHLORIDE.
Resolution 2.60 Å R-free 0.290
2BTA NMR STUDY OF N-TERMINAL HUMAN BAND 3 PEPTIDE, RESIDUES 1-15 Deposited 1995-11-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–15（15 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
2BTB NMR STUDY OF N-TERMINAL HUMAN BAND 3 PEPTIDE, RESIDUES 1-15 Deposited 1995-11-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–15（15 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR mmCIF provides none of the parsed conditions Resolution not provided
3BTB NMR SOLUTION STRUCTURE OF A BAND 3 PEPTIDE INHIBITOR BOUND TO GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE, 20 STRUCTURES Deposited 1997-09-07 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 1–15（15 aa） Fragment：GLYCOLYTIC ENZYME-BINDING DOMAIN, N-TERMINAL 15 RESIDUES OF BAND 3 PROTEIN
Non-standard monomer：Yes (specific site not provided by mmCIF) No recorded non-water small molecule SOLUTION NMR
NMR measurement conditions pH 7.5；283 K
Resolution not provided
4KY9 Structural and Functional Analysis of a Putative Substrate Access Tunnel in the Cytosolic Domain of Human Anion Exchanger 1 Deposited 2013-05-28 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 51–356（306 aa） Fragment：UNP residues 51-356
Chain P 51–356（306 aa） Fragment：UNP residues 51-356
Not recorded No recorded non-water small molecule X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6.5；298 K；100 mM BisTris pH 6.5, 18% PEG 3350, with 0.5% (w/v) octylglucoside, vapor diffusion, sitting drop, temperature 298K
Resolution 2.23 Å R-free 0.223
4YZF Crystal structure of the anion exchanger domain of human erythrocyte Band 3 Deposited 2015-03-25 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded 4KU 2,2'-ethane-1,2-diylbis{5-[(sulfanylmethyl)amino]benzenesulfonic acid} × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；277 K；100 mM Tris-HCl (pH 8.0), 22-26 %(v/v) PEG300, 250 mM CH3COOK
Resolution 3.50 Å R-free 0.290
4YZF Crystal structure of the anion exchanger domain of human erythrocyte Band 3 Deposited 2015-03-25 Assembly 2 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain C 1–911（911 aa）
Chain D 1–911（911 aa）
Not recorded 4KU 2,2'-ethane-1,2-diylbis{5-[(sulfanylmethyl)amino]benzenesulfonic acid} × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION；277 K；100 mM Tris-HCl (pH 8.0), 22-26 %(v/v) PEG300, 250 mM CH3COOK
Resolution 3.50 Å R-free 0.290
7TVZ Cryo-EM structure of human band 3-protein 4.2 complex in diagonal conformation Deposited 2022-02-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 LMT DODECYL-BETA-D-MALTOSIDE × 5 CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
7TW0 Cryo-EM structure of human band 3-protein 4.2 complex in vertical conformation Deposited 2022-02-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
7TW1 Cryo-EM structure of human band 3-protein 4.2 complex (B2P2vertical) Deposited 2022-02-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
7TW2 Cryo-EM structure of human band 3 dimer from red blood cell Deposited 2022-02-06 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.80 Å
7TW3 Cryo-EM structure of human ankyrin complex (B2P1A1) from red blood cell Deposited 2022-02-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
7TW5 Cryo-EM structure of human ankyrin complex (B2P1A2) from red blood cell Deposited 2022-02-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.70 Å
7TW6 Cryo-EM structure of human ankyrin complex (B4P1A1) from red blood cell Deposited 2022-02-06 Assembly 1 Protein heterocomplex Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Chain J 1–911（911 aa）
Chain K 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.60 Å
7TY4 Cryo-EM structure of human Anion Exchanger 1 Deposited 2022-02-11 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 Y01 CHOLESTEROL HEMISUCCINATE × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 2.99 Å
7TY6 Cryo-EM structure of human Anion Exchanger 1 bound to 4,4'-Diisothiocyanatodihydrostilbene-2,2'-Disulfonic Acid (H2DIDS) Deposited 2022-02-11 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 8 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 4DS 4,4'-Diisothiocyano-2,2'-stilbenedisulfonic acid × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 2.98 Å
7TY7 Cryo-EM structure of human Anion Exchanger 1 bound to Bicarbonate Deposited 2022-02-11 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded BCT BICARBONATE ION × 2 CLR CHOLESTEROL × 7 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 3.37 Å
7TY8 Cryo-EM structure of human Anion Exchanger 1 bound to Niflumic Acid Deposited 2022-02-11 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 8 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 NFL 2-{[3-(TRIFLUOROMETHYL)PHENYL]AMINO}NICOTINIC ACID × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 3.18 Å
7TYA Cryo-EM structure of human Anion Exchanger 1 modified with Diethyl Pyrocarbonate (DEPC) Deposited 2022-02-11 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) Non-standard monomer：Yes (specific site not provided by mmCIF) CLR CHOLESTEROL × 8 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 3.07 Å
7UZ3 Band 3-Glycophorin A complex, outward facing Deposited 2022-05-08 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 4 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05 % (w/v) digitonin, 130mM KCl, 20mM HEPES pH 7.4, 1mM ATP, 1mM MgCl2, 1mM PMSF. Peak fractions were concentrated to 8mg/mL, and 0.01% (w/v) of glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 2.35 Å
7UZU Ankyrin-1 (N-terminal region of membrane binding domain, local refinement from consensus reconstruction; bound to N-terminal peptide from band 3) Deposited 2022-05-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain W 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL and 0.01% ( w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.30 Å
7UZV Cytoplasmic domains of Band 3-I (local refinement from consensus reconstruction of ankyrin complexes) Deposited 2022-05-09 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL and 0.01% ( w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.50 Å
7V07 Band 3-I-TM local refinement from erythrocyte ankyrin-1 complex consensus reconstruction Deposited 2022-05-10 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 4 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL and 0.01% ( w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.80 Å
7V0K Consensus refinement of human erythrocyte ankyrin-1 complex (Composite map) Deposited 2022-05-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count
Chain O 1–911（911 aa）
Chain P 1–911（911 aa）
Chain W 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 6 AJP Digitonin × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.40 Å
7V0M Local refinement of ankyrin-1 (N-terminal half), class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-10 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain W 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.70 Å
7V0T Local refinement of Band 3-I cytoplasmic domains, class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05 % (w/v) digitonin, 130mM KCl, 20mM HEPES pH 7.4, 1mM ATP, 1mM MgCl2, 1mM PMSF. Peak fractions were concentrated to 8mg/mL, and 0.01% (w/v) of glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.70 Å
7V0U Local refinement of Band 3-II cytoplasmic domains, class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain D 1–911（911 aa）
Chain F 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 3.00 Å
7V0Y Local refinement of Band 3-III cytoplasmic domains, class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 3.00 Å
7V19 Local refinement of Band 3-II transmembrane domains, class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 3.30 Å
8CRQ Local refinement of Band 3-I transmembrane domains, class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 3.20 Å
8CRR Local refinement of Band 3-III transmembrane domains, class 1 of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 3.00 Å
8CRT Local refinement of Rh trimer, glycophorin B and Band3-III transmembrane region, class 1a of erythrocyte ankyrin-1 complex Deposited 2022-05-11 Assembly 1 Other combination Heteromer；Protein × 8 PDB declaration: octameric（8） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds.
Resolution 3.00 Å
8CS9 Composite reconstruction of Class 1 of the erythrocyte ankyrin-1 complex Deposited 2022-05-12 Assembly 1 Other combination Heteromer；Protein × 18 PDB declaration: octadecameric（18） Consistent with protein count
Chain V 1–911（911 aa）
Chain Y 1–911（911 aa）
Chain Z 1–911（911 aa）
Chain e 1–911（911 aa）
Chain f 1–911（911 aa）
Chain g 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 8 AJP Digitonin × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 6 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.74 Å
8CSL Sub-tomogram averaging of erythrocyte ankyrin-1 complex Deposited 2022-05-12 Assembly 1 Protein heterocomplex Heteromer；Protein × 19 PDB declaration: nonadecameric（19） Consistent with protein count
Chain V 1–911（911 aa）
Chain W 1–911（911 aa）
Chain Y 1–911（911 aa）
Chain Z 1–911（911 aa）
Chain e 1–911（911 aa）
Chain f 1–911（911 aa）
Chain g 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；130 mM KCl, 10 mM HEPES, pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 25.00 Å
8CSV Local refinement of Anykyrin-1 (N-terminal half of membrane binding domain) in Class 2 of erythrocyte ankyrin-1 complex Deposited 2022-05-13 Assembly 1 Protein heterocomplex Heteromer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain W 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.70 Å
8CSY Local refinement of cytoplasmic domains of band3-I in class 2 of erythrocyte ankyrin-1 complex Deposited 2022-05-13 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.70 Å
8CT3 Local refinement of band3-I transmembrane region from class 2 of erythrocyte ankyrin-1 complex Deposited 2022-05-13 Assembly 1 Protein heterocomplex Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain C 1–911（911 aa）
Chain E 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 3.30 Å
8CTE Class 2 of erythrocyte ankyrin-1 complex (Composite map) Deposited 2022-05-14 Assembly 1 Protein heterocomplex Heteromer；Protein × 14 PDB declaration: tetradecameric（14） Consistent with protein count
Chain P 1–911（911 aa）
Chain T 1–911（911 aa）
Chain W 1–911（911 aa）
Not recorded CLR CHOLESTEROL × 10 AJP Digitonin × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；Final gel filtration buffer contained 0.05% w/v digitonin, 130 mM KCl, 20 mM HEPES, pH 7.4, 1 mM ATP, 1 mM MgCl2, 1 mM PMSF. Peak fractions were concentrated to 8 mg/mL, and 0.01% w/v glycyrrhizic acid was added immediately prior to vitrification.
cryo-EM vitrification conditions Cryogen ETHANE；4-6 seconds, wait time 30 seconds
Resolution 2.90 Å
8T3R Cryo-EM Analysis of AE1 Structure in 100 mM NaCl Buffer: Form1 Deposited 2023-06-07 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 CL CHLORIDE ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.99 Å
8T3U Cryo-EM Analysis of AE1 Structure in 100 mM NaCl Buffer: Form2 Deposited 2023-06-07 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.97 Å
8T44 Cryo-EM Analysis of AE1 Structure in 100 mM NaHCO3 Buffer: Form1 Deposited 2023-06-08 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 3 CO3 CARBONATE ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.12 Å
8T45 Cryo-EM Analysis of AE1 Structure in 100 mM NaHCO3 Buffer: Form2 Deposited 2023-06-08 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.99 Å
8T47 Cryo-EM Analysis of AE1 Structure in 100 mM NaHCO3 Buffer: Form3 Deposited 2023-06-08 Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain B 1–911（911 aa）
Not recorded PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 4 CO3 CARBONATE ION × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.16 Å
8T6U Cryo-EM structure of human Anion Exchanger 1 bound to Dipyridamole Deposited 2023-06-18 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 369–891（523 aa）
Chain B 369–891（523 aa）
Not recorded CLR CHOLESTEROL × 8 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 H9F 2-[[2-[bis(2-hydroxyethyl)amino]-4,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidin-6-yl]-(2-hydroxyethyl)amino]ethanol × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 3.13 Å
8T6V Cryo-EM structure of human Anion Exchanger 1 bound to 4,4'-Diisothiocyanatostilbene-2,2'-Disulfonic Acid (DIDS) Deposited 2023-06-18 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 369–891（523 aa）
Chain B 369–891（523 aa）
Not recorded 4DS 4,4'-Diisothiocyano-2,2'-stilbenedisulfonic acid × 2 CLR CHOLESTEROL × 6 Y01 CHOLESTEROL HEMISUCCINATE × 2 PC1 1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；Blot force 3 for 3-5 seconds was used and subsequent grids were screened for ice thickness prior to data collection
Resolution 2.95 Å
9MND Band 3 OF/IF1 Deposited 2024-12-20 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain C 1–911（911 aa）
Not recorded PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 4 PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 Å
9MNG Band 3 OF/OF Deposited 2024-12-21 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain B 1–911（911 aa）
Chain C 1–911（911 aa）
Not recorded PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.11 Å
9MOS Band 3 IF1/IF2 Deposited 2024-12-27 Assembly 1 Other combination Homooligomer；Protein × 2 PDB declaration: dimeric（2） Consistent with protein count
Chain A 1–911（911 aa）
Chain C 1–911（911 aa）
Not recorded PIO [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phosphoryl]oxy-propyl] octanoate × 2 PLC DIUNDECYL PHOSPHATIDYL CHOLINE × 2 CL CHLORIDE ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.88 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.