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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：P29957 New Search
11PDB entries
11Biological assembly
15chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
1AQH ALPHA-AMYLASE FROM ALTEROMONAS HALOPLANCTIS Deposited 1997-07-30 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–477（453 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7.0
Resolution 2.00 Å R-free 0.204
1AQM ALPHA-AMYLASE FROM ALTEROMONAS HALOPLANCTIS COMPLEXED WITH TRIS Deposited 1997-07-31 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–477（453 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7.0
Resolution 1.85 Å R-free 0.186
1B0I ALPHA-AMYLASE FROM ALTEROMONAS HALOPLANCTIS Deposited 1998-11-10 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–477（453 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7；pH 7.0
Resolution 2.40 Å R-free 0.217
1G94 CRYSTAL STRUCTURE ANALYSIS OF THE TERNARY COMPLEX BETWEEN PSYCHROPHILIC ALPHA AMYLASE FROM PSEUDOALTEROMONAS HALOPLANCTIS IN COMPLEX WITH A HEPTA-SACCHARIDE AND A TRIS MOLECULE Deposited 2000-11-22 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–472（448 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；292 K；MPD, Hepes, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 1.74 Å R-free 0.187
1G9H TERNARY COMPLEX BETWEEN PSYCHROPHILIC ALPHA-AMYLASE, COMII (PSEUDO TRI-SACCHARIDE FROM BAYER) AND TRIS (2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL) Deposited 2000-11-23 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–472（448 aa）
Not recorded CA CALCIUM ION × 1 CL CHLORIDE ION × 1 TRS 2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；MPD, Hepes, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 1.80 Å R-free 0.201
1JD7 CRYSTAL STRUCTURE ANALYSIS OF THE MUTANT K300R OF PSEUDOALTEROMONAS HALOPLANCTIS ALPHA-AMYLASE Deposited 2001-06-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–477（453 aa）
Mutation：K300R CA CALCIUM ION × 1 CL CHLORIDE ION × 2 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；292 K；MPD, Hepes, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 2.25 Å R-free 0.215
1JD9 CRYSTAL STRUCTURE ANALYSIS OF THE MUTANT K300Q OF PSEUDOALTEROMONAS HALOPLANCTIS ALPHA-AMYLASE Deposited 2001-06-13 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–477（453 aa）
Mutation：K300Q CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；292 K；MPD, Hepes, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 2.50 Å R-free 0.245
1KXH Crystal structure of the complex between an inactive mutant of psychrophilic alpha-amylase (D174N) and acarbose Deposited 2002-01-31 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–472（448 aa）
Mutation：D174N CA CALCIUM ION × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；293 K；MPD, hepes, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Resolution 2.30 Å R-free 0.188
1L0P CRYSTAL STRUCTURE ANALYSIS OF THE COMPLEX BETWEEN PSYCHROPHILIC ALPHA AMYLASE FROM PSEUDOALTEROMONAS HALOPLANCTIS AND NITRATE Deposited 2002-02-12 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–472（448 aa）
Not recorded CA CALCIUM ION × 1 NO3 NITRATE ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 7；292 K；MPD, Hepes, pH 7.00, VAPOR DIFFUSION, HANGING DROP, temperature 292K
Resolution 2.10 Å R-free 0.180
8CQF Crystal Structure of a Chimeric Alpha-Amylase from Pseudoalteromonas Haloplanktis Complexed with Rearranged Acarbose Deposited 2023-03-06 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 26–232（207 aa）
Chain A 236–294（59 aa）
Chain A 301–471（171 aa）
Mutation：A77V Q204L S226G T227A E228K N231T T232L G270_G271insA A272G G273S N274S V275I I276L D310N T311D D312W Mutation：A77V Q204L S226G T227A E228K N231T T232L G270_G271insA A272G G273S N274S V275I I276L D310N T311D D312W Mutation：A77V Q204L S226G T227A E228K N231T T232L G270_G271insA A272G G273S N274S V275I I276L D310N T311D D312W CL CHLORIDE ION × 2 CA CALCIUM ION × 1 EDO 1,2-ETHANEDIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 6；298 K；3 M NaCl, 0.1 M BisTris
Resolution 2.05 Å R-free 0.198
8CQG Crystal Structure of a Chimeric Alpha-Amylase from Pseudoalteromonas Haloplanktis Deposited 2023-03-06 Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 25–232（208 aa）
Chain A 236–294（59 aa）
Chain A 302–471（170 aa）
Mutation：A77V Q204L S226G T227A E228K N231T T232L G270_G271insA A272G G273S N274S V275I I276L D310N T311D D312W Mutation：A77V Q204L S226G T227A E228K N231T T232L G270_G271insA A272G G273S N274S V275I I276L D310N T311D D312W Mutation：A77V Q204L S226G T227A E228K N231T T232L G270_G271insA A272G G273S N274S V275I I276L D310N T311D D312W EDO 1,2-ETHANEDIOL × 11 CL CHLORIDE ION × 2 CA CALCIUM ION × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 5.5；298 K；3 M NaCl, 0.1 M BisTris
Resolution 1.74 Å R-free 0.205

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.