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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：Q16819 New Search
5PDB entries
5Biological assembly
14chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion 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
7UAB Human pro-meprin alpha (zymogen state) Deposited 2022-03-12 Assembly 1 Other combination Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 22–600（579 aa）
Chain D 22–600（579 aa）
Chain E 22–600（579 aa）
Chain H 22–600（579 aa）
Not recorded NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 7 CA CALCIUM ION × 7 ZN ZINC ION × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE；3 s blot, -3 force
Resolution 3.70 Å
7UAC Human pro-meprin alpha (zymogen state) Deposited 2022-03-12 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain H 22–600（579 aa）
Not recorded CA CALCIUM ION × 2 ZN ZINC ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE；3 s blot, -3 force
Resolution 2.70 Å
7UAE Human meprin alpha (active state) Deposited 2022-03-12 Assembly 1 Other combination Monomer；Protein × 1 PDB declaration: monomeric（1） Consistent with protein count
Chain A 22–600（579 aa）
Not recorded CA CALCIUM ION × 2 ZN ZINC ION × 1 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE；3 s blot, -3 force
Resolution 2.60 Å
7UAF Human meprin alpha inhibitory complex with compound 10d (N~3~,N~3~-bis[(2H-1,3-benzodioxol-5-yl)methyl]-N-hydroxy-beta-alaninamide) Deposited 2022-03-12 Assembly 1 Other combination Homooligomer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count
Chain A 22–600（579 aa）
Chain B 22–600（579 aa）
Chain C 22–600（579 aa）
Chain D 22–600（579 aa）
Not recorded M6X N~3~,N~3~-bis[(2H-1,3-benzodioxol-5-yl)methyl]-N-hydroxy-beta-alaninamide × 4 CA CALCIUM ION × 8 ZN ZINC ION × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE；3 s blot, -3 force
Resolution 2.40 Å
7UAI Meprin alpha helix in complex with fetuin-B Deposited 2022-03-13 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: hexameric（6） Consistent with protein count
Chain B 22–600（579 aa）
Chain C 22–600（579 aa）
Chain D 22–600（579 aa）
Chain E 22–600（579 aa）
Not recorded CA CALCIUM ION × 8 ZN ZINC ION × 4 NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 4 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE；3 s blot, -3 force
Resolution 2.80 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.