SAXSdb — 9s42

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1. Protein Identity and Related Structures Protein Identity & Related Structures

Albumin

OrganismNot specified

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count	Chain A； UniProt 25–607	Not recorded	ZZ7 (2R,4S)-2-[(R)-{[(2R)-2-amino-2-phenylacetyl]amino}(carboxy)methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid × 1 FMT FORMIC ACID × 3 LMR (2S)-2-hydroxybutanedioic acid × 1 SIN SUCCINIC ACID × 1 ACT ACETATE ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, HANGING DROP；pH 6；291 K；80% v/v Tacsimate, pH 6.0	Resolution 2.32 Å R-free 0.246

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 9S42	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
3V08 Crystal structure of Equine Serum Albumin Deposited 2011-12-07	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	BR BROMIDE ION × 11 SO4 SULFATE ION × 6 EDO 1,2-ETHANEDIOL × 1 UNX UNKNOWN LIGAND × 12 PG4 TETRAETHYLENE GLYCOL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；289 K；1.9 M NH4 sulfate, 2.5% PEG8000, 0.1 M NaBr, 0.1 M Tris HCl, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K	Resolution 2.45 Å R-free 0.245
4F5T Crystal Structure of Equine Serum Albumin Deposited 2012-05-13	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：UNP residues 25-607	Not recorded	ACT ACETATE ION × 6 SO4 SULFATE ION × 4 GOL GLYCEROL × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；293 K；1.7 M ammonium sulfate, 0.1M acetate buffer pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.32 Å R-free 0.259
4F5U Crystal structure of Equine Serum Albumin at 2.04 resolution Deposited 2012-05-13	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：UNP residues 25-607	Not recorded	MLI MALONATE ION × 6 SIN SUCCINIC ACID × 1 LMR (2S)-2-hydroxybutanedioic acid × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293 K；80% Tacsimate, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.04 Å R-free 0.243
4J2V Crystal Structure of Equine Serum Albumin in complex with 3,5-diiodosalicylic acid Deposited 2013-02-05	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：UNP residues 25-607	Not recorded	DIU 2-HYDROXY-3,5-DIIODO-BENZOIC ACID × 4 MLI MALONATE ION × 7 FMT FORMIC ACID × 8 ACT ACETATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6；293 K；85% Tacsimate, cocrystallization with 3,5-diiodosalicylic acid, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.12 Å R-free 0.238
4OT2 Crystal Structure of Equine Serum Albumin in complex with Naproxen Deposited 2014-02-13	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：UNP residues 25-607	Not recorded	NPS (2S)-2-(6-methoxynaphthalen-2-yl)propanoic acid × 2 SIN SUCCINIC ACID × 1 ACT ACETATE ION × 2 MLI MALONATE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 4.5；293 K；1.6 M Ammonium sulfate, 0.1 M acetate buffer pH 4.5, cocrystallization with Naproxen, VAPOR DIFFUSION, HANGING DROP, temperature 293K	Resolution 2.42 Å R-free 0.247
5DQF Horse Serum Albumin (ESA) in complex with Cetirizine Deposited 2015-09-14	Different construct Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 28–607（580 aa）	Mutation：R561A	PG4 TETRAETHYLENE GLYCOL × 7 SO4 SULFATE ION × 4 LCR (2-{4-[(R)-(4-chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethoxy)acetic acid × 1 CZE (2-{4-[(S)-(4-chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethoxy)acetic acid × 1 CL CHLORIDE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.5；289 K；1 ul of 30 mg/mL protein in 10 mM Tris pH 7.5, 150 mM NaCl was mixed with 1ul of the well condition: 100 mM Tris pH 7.5, 1800 mM (NH4)2SO4, 87.5 mM NaBr, 2.5% w/v PEG 8K	Resolution 2.15 Å R-free 0.241
5HOZ Crystal structure of Equine Serum Albumin (ESA) at pH 9.0 Deposited 2016-01-19	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Mutation：R561A	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；289 K；1 ul of 32 mg/ml protein in 10 mM Tris pH 7.5, 150 mM NaCl was mixed with 1 ul of the well condition (100 mM Tris, 2.4 M Ammonium phosphate, final pH 9.0) and equilibrated against well solution on 15-well Crystallization Plate (Qiagen)	Resolution 2.15 Å R-free 0.239
5IIH Crystal structure of Equine Serum Albumin in the presence of 2.5 mM zinc at pH 7.4 Deposited 2016-03-01	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：residues 25-607	Not recorded	ZN ZINC ION × 1 SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；289 K；1 ul of 30 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl pH 7.4, 2.0 M (NH4)2SO4, 5 mM ZnCl2) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen)	Resolution 2.40 Å R-free 0.235
5IIU Crystal structure of Equine Serum Albumin in the presence of 10 mM zinc at pH 6.9 Deposited 2016-03-01	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：residues 25-607	Not recorded	ZN ZINC ION × 10 SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.9；289 K；1 ul of 30 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.0 M (NH4)2SO4, 5 mM ZnCl2, final pH 6.9) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 50 mM ZnCl2 in 100 mM Tris, final pH 6.9, to final concentration of 10 mM	Resolution 2.30 Å R-free 0.239
5IIX Crystal structure of Equine Serum Albumin in the presence of 15 mM zinc at pH 6.5 Deposited 2016-03-01	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：residues 25-607	Not recorded	ZN ZINC ION × 11 UNL UNKNOWN LIGAND × 2 SO4 SULFATE ION × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；289 K；1 ul of 30 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.0 M (NH4)2SO4, 5 mM ZnCl2, final pH 6.5) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 50 mM ZnCl2 in 100 mM Tris, final pH 6.5, to final concentration of 15 mM	Resolution 2.20 Å R-free 0.228
5IJ5 Crystal structure of Equine Serum Albumin in the presence of 50 mM zinc at pH 4.5 Deposited 2016-03-01	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：residues 25-607	Not recorded	ZN ZINC ION × 15 GOL GLYCEROL × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 4.5；289 K；1 ul of 30 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (2.0 M (NH4)2SO4, 0.1 M Na acetate, 0.1 M ZnCl2, final pH 4.5) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen)	Resolution 2.55 Å R-free 0.253
5IJE Crystal structure of Equine Serum Albumin in the presence of 30 mM zinc at pH 7.4 Deposited 2016-03-01	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：residues 25-607	Not recorded	ZN ZINC ION × 13 SO4 SULFATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；289 K；1 ul of 30 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.0 M (NH4)2SO4, 5 mM ZnCl2, final pH 7.4) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 100 mM ZnCl2 in 100 mM Tris, final pH 7.4, to final concentration of 100 mM	Resolution 2.40 Å R-free 0.255
5V0V Crystal structure of Equine Serum Albumin complex with etodolac Deposited 2017-02-28	Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa） Fragment：UNP residues 25-607	Not recorded	TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 4 SO4 SULFATE ION × 7 8QP [(1S)-1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indol-1-yl]acetic acid × 2 8QS [(1R)-1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indol-1-yl]acetic acid × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；289 K；1 ul of 34 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.0 M (NH4)2SO4 final pH 7.4) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 10 mM Etodolac.	Resolution 2.45 Å R-free 0.238
6CI6 Crystal structure of equine serum albumin in complex with nabumetone Deposited 2018-02-23	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	SO4 SULFATE ION × 5 NBO nabumetone × 2 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 KNA nonanoic acid × 1 UNX UNKNOWN LIGAND × 8	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；289 K；1 ul of 34 mg/ml protein in 10 mM Tris pH 7.4 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.2 M (NH4)2SO4 final pH 7.4) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 10 mM nabumetone	Resolution 2.80 Å R-free 0.256
6MDQ Crystal structure of equine serum albumin in complex with testosterone Deposited 2018-09-05	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	FLC CITRATE ANION × 3 TES TESTOSTERONE × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；289 K；0.2 ul of 15 mg/ml protein was mixed with 0.2 ul of the well condition (1.8 M ammonium dihydrogen citrate, pH 7.0) and equilibrated against well solution in 96-Well sitting drop crystallization plate (Swissci). Testosterone powder was added to the crystallization drop	Resolution 2.15 Å R-free 0.226
6U4R Crystal structure of Equine Serum Albumin complex with ketoprofen Deposited 2019-08-26	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	9KL (2S)-2-[3-(benzenecarbonyl)phenyl]propanoic acid × 3 KNA nonanoic acid × 1 UNX UNKNOWN LIGAND × 3 UNL UNKNOWN LIGAND × 1 SO4 SULFATE ION × 3	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7.4；298 K；1 ul of 35 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.0 M (NH4)2SO4 final pH 7.4) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 3mM ketoprofen.	Resolution 2.45 Å R-free 0.233
6U4X Crystal structure of Equine Serum Albumin complex with ibuprofen Deposited 2019-08-26	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	UNL UNKNOWN LIGAND × 1 UNX UNKNOWN LIGAND × 9 IBP IBUPROFEN × 2 SO4 SULFATE ION × 10	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；289 K；1 ul of 36 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.4 M (NH4)2SO4 final pH 7.4) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Ibuprofen powder was added to the crystallization drop.	Resolution 2.25 Å R-free 0.238
6U5A Crystal structure of Equine Serum Albumin complex with 6-MNA Deposited 2019-08-27	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	UNX UNKNOWN LIGAND × 7 PWY (6-methoxynaphthalen-2-yl)acetic acid × 3 SO4 SULFATE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；289 K；1 ul of 35 mg/ml protein in 10 mM Tris pH 7.5 and 150 mM NaCl buffer was mixed with 1 ul of the well condition (0.2 M Li2SO4, 0.1 M Tris:HCl, 2.0 M (NH4)2SO4 final pH 7.4) and equilibrated against well solution in 15 Well Crystallization Plate (Qiagen). Crystals were soaked with 3 mM 6-MNA.	Resolution 2.65 Å R-free 0.256
6XK0 Albumin-dexamethasone complex Deposited 2020-06-24	Different mutation/modification Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Non-standard monomer：Yes (specific site not provided by mmCIF)	DEX DEXAMETHASONE × 1 FLC CITRATE ANION × 1 MYR MYRISTIC ACID × 1 UNX UNKNOWN LIGAND × 4	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；289 K；Prior to crystallization, 15 mg/ml protein was incubated with dexamethasone powder (10-fold molar excess) for 60 min at room temperature, and the mixture with the powder in suspension was used for crystallization. 1 ul of this mixture was mixed with 1 ul of the well condition (1.8 M ammonium dihydrogen citrate, pH 7.0) and equilibrated against the well solution in 15-Well hanging drop crystallization plate (Qiagen, EasyXtal). 1:1 mixture of Paratone N and mineral oil was used as a cryoprotectant	Resolution 2.40 Å R-free 0.249
7MBL Crystal structure of Equine Serum Albumin in complex with Cobalt (II) Deposited 2021-03-31	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	CO COBALT (II) ION × 5 SO4 SULFATE ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions COUNTER-DIFFUSION；pH 7.4；291 K；Protein: 1 uL of 34 mg/mL ESA dissolved in 10 mM Tris (pH 7.4) and 150 mM NaCl. Precipitant: 1 uL of 0.2 M lithium sulfate, 2.0 M ammonium sulfate, 0.1 M Tris pH 7.4. 15-Well hanging drop crystallization plate (Qiagen, EasyXtal). 3.3 uL of 50 mM cobalt (II) chloride dissolved in the reservoir solution were added directly to the 2 uL crystallization drop containing crystals to reach a final cobalt concentration of 31 mM and then incubated for a few hours before harvesting. Paratone was used as a cryoprotectant	Resolution 2.70 Å R-free 0.289
9S43 Complex of Equine Serum Albumin with Oxacillin Deposited 2025-07-25	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	A1JLX (2~{R},5~{R},6~{S})-3,3-dimethyl-6-[(5-methyl-3-phenyl-1,2-oxazol-4-yl)carbonylamino]-7-oxidanylidene-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid × 1 LMR (2S)-2-hydroxybutanedioic acid × 2 ACT ACETATE ION × 3 MLI MALONATE ION × 9 FMT FORMIC ACID × 4 SIN SUCCINIC ACID × 3 CA CALCIUM ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；291 K；2.0 M ammonium sulfate, 0.1 M acetate buffer at pH 5.0 and then crystal was cryoprotected by 85% Tacsimate at pH 6.0	Resolution 2.03 Å R-free 0.206
9S73 Complex of Equine Serum Albumin with Ampicillin Deposited 2025-08-02	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	ACT ACETATE ION × 1 FMT FORMIC ACID × 9 AIC (2S,5R,6R)-6-{[(2R)-2-AMINO-2-PHENYLETHANOYL]AMINO}-3,3-DIMETHYL-7-OXO-4-THIA-1-AZABICYCLO[3.2.0]HEPTANE-2-CARBOXYLIC ACID × 1 MLI MALONATE ION × 1	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 5；291 K；2.0 M ammonium sulfate, 0.1 M acetate buffer pH 5.0	Resolution 2.50 Å R-free 0.263
9ZMD Equine Serum Albumin with Copper(II) Deposited 2025-12-10	Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 25–607（583 aa）	Not recorded	CU COPPER (II) ION × 6 SO4 SULFATE ION × 7 NA SODIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.4；291.15 K；0.2 M lithium sulfate, 0.1 M Tris-HCl, pH 7.4, 2.2 M ammonium sulfate, 5 mM copper(II) chloride mixed 1:1 with 36 mg/mL protein, 10 mM Tris-HCl, 150 mM sodium chloride	Resolution 2.65 Å R-free 0.251

23 other PDB entries and 23 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	ALBU_HORSE
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–583； UniProt 25–607

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	9s42
Deposition date deposition_date	2025-07-25
最后修订 last_revision	2026-02-04
Structure title title	Complex of Equine Serum Albumin with Hydrolyzed Ampicillin
Keywords keywords	serum albumin, hydrolyzed ampicillin, TRANSPORT PROTEIN; TRANSPORT PROTEIN
Experimental Method method	X-RAY DIFFRACTION

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3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	27.31 Å
Radius of gyration Rg (electron density) rg_electron	26.35 Å
Forward intensity I(0) i0	72607200.00
Molecular weight molecular_weight	66010.0 kDa
Excluded volume excluded_volume	82384 Å³
Envelope volume envelope_volume	101540 Å³
Hydration-shell volume shell_volume	32268 Å³
Envelope diameter envelope_diameter	92.0 Å
Shell Rg shell_rg	33.47 Å
Envelope Rg envelope_rg	26.51 Å
Shape Rg shape_rg	26.35 Å
Total Rg total_rg	27.12 Å
Total atoms total_atoms	4626
Residues n_residues	580
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

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4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	88.1 Å
Rg (real space) rg_real	27.21 Å
Rg uncertainty (real space) rg_real_error	0.53 Å
I(0) (real space) i0_real	7.2610e+07
I(0) uncertainty (real space) i0_real_error	9.6150e+05
Rg (reciprocal space) rg_reciprocal	27.24 Å
I(0) (reciprocal space) i0_reciprocal	72610000.0000
Solution quality estimate total_estimate	0.9008
Solution quality rating solution_quality	EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks	2
Primary peak position r_peak_primary	33.4 Å
Skewness Skewness skewness	0.227
Kurtosis Kurtosis kurtosis	-0.429
Angular range angular_range	— – 0.2900 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	10060000.0000
Real-space data points n_real_points	59
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.907; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.986

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (7)

Entity 1 Entity 1 polymer

Description description	Albumin
Molecular weight formula_weight	65854.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	4773

DTHKSEIAHRFNDLGEKHFKGLVLVAFSQYLQQCPFEDHVKLVNEVTEFAKKCAADESAENCDKSLHTLFGDKLCTVATLRATYGELADCCEKQEPERNECFLTHKDDHPNLPKLKPEPDAQCAAFQEDPDKFLGKYLYEVARRHPYFYGPELLFHAEEYKADFTECCPADDKLACLIPKLDALKERILLSSAKERLKCSSFQNFGERAVKAWSVARLSQKFPKADFAEVSKIVTDLTKVHKECCHGDLLECADDRADLAKYICEHQDSISGKLKACCDKPLLQKSHCIAEVKEDDLPSDLPALAADFAEDKEICKHYKDAKDVFLGTFLYEYSRRHPDYSVSLLLRIAKTYEATLEKCCAEADPPACYRTVFDQFTPLVEEPKSLVKKNCDLFEEVGEYDFQNALIVRYTKKAPQVSTPTLVEIGRTLGKVGSRCCKLPESERLPCSENHLALALNRLCVLHEKTPVSEKITKCCTDSLAERRPCFSALELDEGYVPKEFKAETFTFHADICTLPEDEKQIKKQSALAELVKHKPKATKEQLKTVLGNFSAFVAKCCGREDKEACFAEEGPKLVASSQLALA

Entity 2 Entity 2 non-polymer

Description description	(2R,4S)-2-[(R)-{[(2R)-2-amino-2-phenylacetyl]amino}(carboxy)methyl]-5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid
Molecular weight formula_weight	367.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 3 Entity 3 non-polymer

Description description	FORMIC ACID
Molecular weight formula_weight	46.0 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 4 Entity 4 non-polymer

Description description	(2S)-2-hydroxybutanedioic acid
Molecular weight formula_weight	134.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	SUCCINIC ACID
Molecular weight formula_weight	118.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 non-polymer

Description description	ACETATE ION
Molecular weight formula_weight	59.0 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	137

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8. Citations (1)

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Unit-cell length a length_a	93.470 Å
Unit-cell length b length_b	93.470 Å
Unit-cell length c length_c	141.675 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	6

Space group space_group	P 61
Space-group number int_tables_number	169
Crystal system crystal_system	—

Resolution resolution	2.320 Å
Low-resolution limit resolution_low	44.380 Å
R factor r_factor	0.1784
R_work r_work	0.1748
R_free r_free	0.2458

fit	/app/data/saxs_computation/s4/9s42/9s42.fit
pddf	/app/data/pr_computation/s4/9s42/9s42.pr.out
profile	/app/data/saxs_computation/s4/9s42/9s42.dat

Complex of Equine Serum Albumin with Hydrolyzed Ampicillin

1. Protein Identity and Related Structures Protein Identity & Related Structures

Albumin

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction