ISDA

Deposition Date 2011-04-15

Release Date 2011-12-21

Last Version Date 2024-11-20

Entry Detail

PDB ID:

3RJO

Keywords:

HYDROLASE

Title:

Crystal Structure of ERAP1 Peptide Binding Domain

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Spodoptera frugiperda

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.30 Å

R-Value Free:

0.26

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Endoplasmic reticulum aminopeptidase 1
Gene (Uniprot):ERAP1
Chain IDs:A
Chain Length:419
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:Q9NZ08 Pfam ID:PF11838 EC:3.4.11.1

Ligand Molecules

EDO

Primary Citation

Structural insights into the molecular ruler mechanism of the endoplasmic reticulum aminopeptidase ERAP1.

Gandhi, A, Lakshminarasimhan, D, Sun, Y, Guo, H.C.Show

Sci Rep 1 186 186 (2011)

PMID: 22355701 DOI: 10.1038/srep00186

Abstact

Endoplasmic reticulum aminopeptidase 1 (ERAP1) is an essential component of the immune system, because it trims peptide precursors and generates the N--restricted epitopes. To examine ERAP1's unique properties of length- and sequence-dependent processing of antigen precursors, we report a 2.3 Å resolution complex structure of the ERAP1 regulatory domain. Our study reveals a binding conformation of ERAP1 to the carboxyl terminus of a peptide, and thus provides direct evidence for the molecular ruler mechanism.

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Primary Citation of related structures