Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1meka_ Alpha and beta proteins (a/b) Thioredoxin fold Thioredoxin-like PDI-like Protein disulfide isomerase, PDI human (Homo sapiens ) [TaxId: 9606 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyPDI-like 8058573 4000084 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyThioredoxin-like 8058574 3000031 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AThioredoxine1mekA1 A: a+b three layersX: Thioredoxin-likeH: Thioredoxin-like (From Topology)T: Thioredoxin-likeF: ThioredoxinECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.30.10 Alpha Beta 3-Layer(aba) Sandwich Glutaredoxin GlutaredoxinCATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00085Thioredoxin (Thioredoxin)ThioredoxinThioredoxins are small enzymes that participate in redox reactions, via the reversible oxidation of an active centre disulfide bond. Some members with only the active site are not separated from the noise.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
PROTEIN DISULFIDE ISOMERASE

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
protein disulfide-isomerase (eukaryotic)  M-CSA #191

Protein disulfide isomerase (PDI) from humans is a 57 kDa protein present in the endoplasmic reticulum of eukaryotes. It is involved in disulfide bond formation, breakage, and rearrangement during the folding of proteins translocated into the endoplasmic reticulum. PDI contains two active sites with the amino acid sequence -Cys-Gly-His-Cys-, each of which is cycled between the dithiol and the disulfide forms as in the related redox protein thioredoxin. In addition, PDI is the beta subunit of prolyl-4-hydroxylase, which has an alpha2beta2 quaternary structure, and it is one subunit of the heterodimeric triglyceride transfer protein complex.

Defined by 4 residues: CYS:A-36GLY:A-37HIS:A-38CYS:A-39
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