2PK4 Hydrolase(Serine Protease) date Jul 18, 1991
title The Refined Structure Of The Epsilon-Aminocaproic Acid Compl Human Plasminogen Kringle
authors A.Tulinsky, T.P.Wu
compound source
Molecule: Human Plasminogen Kringle 4
Chain: A
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
symmetry Space Group: P 1 21 1
length a length b length c angle alpha angle beta angle gamma
42.210 35.460 25.430 90.00 102.94 90.00
method X-Ray Diffractionresolution 2.25 Å
ligand ACA enzyme
related structures by homologous chain: 1PMK, 4KIV
Primary referenceThe refined structure of the epsilon-aminocaproic acid complex of human plasminogen kringle 4., Wu TP, Padmanabhan K, Tulinsky A, Mulichak AM, Biochemistry 1991 Oct 29;30(43):10589-94. PMID:1657149
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (19 Kb) [Save to disk]
  • Biological Unit Coordinates (2pk4.pdb1.gz) 16 Kb
  • LPC: Ligand-Protein Contacts for 2PK4
  • CSU: Contacts of Structural Units for 2PK4
  • Likely Quarternary Molecular Structure file(s) for 2PK4
  • Retrieve 2PK4 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 2PK4 from S2C, [Save to disk]
  • View 2PK4 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 2PK4
  • 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 2PK4, from MSDmotif at EBI
  • Genome occurence of 2PK4's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d2pk4__, region [Jmol] [rasmolscript] [script source]
  • Fold representative 2pk4 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: [2pk4] [2pk4_A]
  • SWISS-PROT database: [P00747]
  • Domain organization of [PLMN_HUMAN] by SWISSPFAM
  • Domain found in 2PK4: [KR ] by SMART
  • Other resources with information on 2PK4
  • Community annotation for 2PK4 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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