4K8Y Hydrolase Hydrolase Inhibitor date Apr 19, 2013
title Atomic Resolution Crystal Structures Of Kallikrein-Related P Complexed With Sunflower Trypsin Inhibitor (Sfti-1)
authors O.V.Ilyichova, J.E.Swedberg, S.J.De Veer, K.C.Sit, J.M.Harris, A.
compound source
Molecule: Kallikrein-4
Chain: A
Fragment: Related Peptidase 4, Unp Residues 31-253
Synonym: Enamel Matrix Serine Proteinase 1, Kallikrein-Like 1, Klk-L1, Prostase, Serine Protease 17;
Ec: 3.4.21.-
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Klk4
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Bl21(De3)Plyss
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet12a-Propsa-Hk4

Molecule: Trypsin Inhibitor 1
Chain: B
Synonym: Sfti-1
Engineered: Yes

Synthetic: Yes
Organism_scientific: Helianthus Annuus
Organism_common: Common Sunflower
Organism_taxid: 4232
Other_details: This Inhibitor Occurs Naturally In Sunflower
symmetry Space Group: P 1 21 1
R_factor 0.150 R_Free 0.170
length a length b length c angle alpha angle beta angle gamma
31.927 75.747 39.743 90.00 95.73 90.00
method X-Ray Diffractionresolution 1.00 Å
enzyme Hydrolase E.C.3.4.21 BRENDA

Primary referenceDirect and indirect mechanisms of KLK4 inhibition revealed by structure and dynamics., Riley BT, Ilyichova O, Costa MG, Porebski BT, de Veer SJ, Swedberg JE, Kass I, Harris JM, Hoke DE, Buckle AM, Sci Rep. 2016 Oct 21;6:35385. doi: 10.1038/srep35385. PMID:27767076
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (90 Kb) [Save to disk]
  • Biological Unit Coordinates (4k8y.pdb1.gz) 85 Kb
  • CSU: Contacts of Structural Units for 4K8Y
  • Structure Factors (1100 Kb)
  • Retrieve 4K8Y in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 4K8Y from S2C, [Save to disk]
  • Re-refined 4k8y structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 4K8Y 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 4K8Y
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 4K8Y, from MSDmotif at EBI
  • Fold representative 4k8y from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [4k8y_A] [4k8y_B] [4k8y]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Domain found in 4K8Y: [Tryp_SPc ] by SMART
  • Other resources with information on 4K8Y
  • Community annotation for 4K8Y at PDBWiki (http://pdbwiki.org)

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