SAXSdb — Protein Structure Search

Current Protein Identity：P01877 New Search

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
6UE8 Structure of tetrameric sIgA complex (Class 1) Deposited 2019-09-20	Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count	Chain A 110–340（231 aa） Fragment：UNP residues 110-340 Chain B 110–340（231 aa） Fragment：UNP residues 110-340 Chain E 110–340（231 aa） Fragment：UNP residues 110-340 Chain F 110–340（231 aa） Fragment：UNP residues 110-340 Chain G 110–340（231 aa） Fragment：UNP residues 110-340 Chain H 110–340（231 aa） Fragment：UNP residues 110-340 Chain K 110–340（231 aa） Fragment：UNP residues 110-340 Chain L 110–340（231 aa） Fragment：UNP residues 110-340	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 5	ELECTRON MICROSCOPY	cryo-EM buffer pH 7.2 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
6UE9 Structure of tetrameric sIgA complex (Class 2) Deposited 2019-09-20	Assembly 1 Other combination Heteromer；Protein × 10 PDB declaration: decameric（10） Consistent with protein count	Chain A 110–340（231 aa） Fragment：UNP residues 110-340 Chain B 110–340（231 aa） Fragment：UNP residues 110-340 Chain E 110–340（231 aa） Fragment：UNP residues 110-340 Chain F 110–340（231 aa） Fragment：UNP residues 110-340 Chain G 110–340（231 aa） Fragment：UNP residues 110-340 Chain H 110–340（231 aa） Fragment：UNP residues 110-340 Chain K 110–340（231 aa） Fragment：UNP residues 110-340 Chain L 110–340（231 aa） Fragment：UNP residues 110-340	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 7	ELECTRON MICROSCOPY	cryo-EM buffer pH 7.2 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.90 Å
6UEA Structure of pentameric sIgA complex Deposited 2019-09-20	Assembly 1 Other combination Heteromer；Protein × 12 PDB declaration: dodecameric（12） Consistent with protein count	Chain A 110–340（231 aa） Fragment：UNP residues 110-340 Chain B 110–340（231 aa） Fragment：UNP residues 110-340 Chain E 110–340（231 aa） Fragment：UNP residues 110-340 Chain F 110–340（231 aa） Fragment：UNP residues 110-340 Chain G 110–340（231 aa） Fragment：UNP residues 110-340 Chain H 110–340（231 aa） Fragment：UNP residues 110-340 Chain I 110–340（231 aa） Fragment：UNP residues 110-340 Chain J 110–340（231 aa） Fragment：UNP residues 110-340 Chain K 110–340（231 aa） Fragment：UNP residues 110-340 Chain L 110–340（231 aa） Fragment：UNP residues 110-340	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 2	ELECTRON MICROSCOPY	cryo-EM buffer pH 7.2 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.00 Å
9OFS Crystal structure of the human IGA2m2 FC fragment-FC-alpha receptor (CD89) complex Deposited 2025-04-30	Assembly 1 Other combination Heteromer；Protein × 4 PDB declaration: tetrameric（4） Consistent with protein count	Chain A 109–322（214 aa）	Not recorded	NAG 2-acetamido-2-deoxy-beta-D-glucopyranose × 8 CL CHLORIDE ION × 2	X-RAY DIFFRACTION	X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 8；294 K；0.15M sodium chloride 0.1M Tris-HCl pH 8.0 20% PEG 1000	Resolution 1.95 Å R-free 0.253

Protein Structures and Oligomeric States

Related-Structure Differences