3PEP Hydrolase (Acid Proteinase) date Oct 24, 1989
title Revised 2.3 Angstroms Structure Of Porcine Pepsin. Evidence Flexible Subdomain
authors C.Abad-Zapatero, J.W.Erickson
compound source
Molecule: Pepsin
Chain: A
Engineered: Yes
Organism_scientific: Sus Scrofa
Organism_common: Pig
Organism_taxid: 9823
symmetry Space Group: P 1 1 21
length a length b length c angle alpha angle beta angle gamma
55.270 73.820 36.440 90.00 90.00 103.38
method X-Ray Diffractionresolution 2.30 Å
ligand EOH enzyme Hydrolase E.C. BRENDA
related structures by homologous chain: 1PSN, 5PEP

Primary referenceRevised 2.3 A structure of porcine pepsin: evidence for a flexible subdomain., Abad-Zapatero C, Rydel TJ, Erickson J, Proteins 1990;8(1):62-81. PMID:2217165
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (59 Kb) [Save to disk]
  • Biological Unit Coordinates (3pep.pdb1.gz) 54 Kb
  • LPC: Ligand-Protein Contacts for 3PEP
  • CSU: Contacts of Structural Units for 3PEP
  • Likely Quarternary Molecular Structure file(s) for 3PEP
  • Retrieve 3PEP in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3PEP from S2C, [Save to disk]
  • View 3PEP in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 3PEP
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 3PEP, from MSDmotif at EBI
  • Genome occurence of 3PEP's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d3pep__, region [Jmol] [rasmolscript] [script source]
  • Fold representative 3pep from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3pep_A] [3pep]
  • SWISS-PROT database: [P00791]
  • Domain organization of [PEPA_PIG] by SWISSPFAM
  • Other resources with information on 3PEP
  • Community annotation for 3PEP at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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