1KFX Hydrolase date Nov 23, 2001
title Crystal Structure Of Human M-Calpain Form I
authors S.Strobl, C.Fernandez-Catalan, M.Braun, R.Huber, H.Masumoto, K.Na A.Irie, H.Sorimachi, G.Bourenkow, H.Bartunik, K.Suzuki, W.Bode
compound source
Molecule: M-Calpain Large Subunit
Chain: L
Fragment: Catalytic Subunit
Synonym: Calpain 2, Large [Catalytic] Subunit; Calcium-Acti Neutral Proteinase; Canp;
Ec: 3.4.22.53
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Spodoptera Frugiperda
Expression_system_common: Fall Armyworm
Expression_system_taxid: 7108

Molecule: M-Calpain Small Subunit
Chain: S
Fragment: Regulatory Subunit
Synonym: Calcium-Dependent Protease, Small Subunit; Calpain Regulatory Subunit; Calcium-Activated Neutral Proteinase; C
Engineered: Yes

Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Spodoptera Frugiperda
Expression_system_common: Fall Armyworm
Expression_system_taxid: 7108
symmetry Space Group: P 1 21 1
R_factor 0.243 R_Free 0.318
crystal
cell
length a length b length c angle alpha angle beta angle gamma
64.780 133.250 77.530 90.00 102.07 90.00
method X-Ray Diffractionresolution 3.15 Å
ligand
enzyme Hydrolase E.C.3.4.22.53 BRENDA
Gene
Ontology
ChainFunctionProcessComponent
L


S


Primary referenceThe crystal structure of calcium-free human m-calpain suggests an electrostatic switch mechanism for activation by calcium., Strobl S, Fernandez-Catalan C, Braun M, Huber R, Masumoto H, Nakagawa K, Irie A, Sorimachi H, Bourenkow G, Bartunik H, Suzuki K, Bode W, Proc Natl Acad Sci U S A 2000 Jan 18;97(2):588-92. PMID:10639123
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (145 Kb) [Save to disk]
  • Biological Unit Coordinates (1kfx.pdb1.gz) 138 Kb
  • CSU: Contacts of Structural Units for 1KFX
  • Likely Quarternary Molecular Structure file(s) for 1KFX
  • Retrieve 1KFX in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1KFX from S2C, [Save to disk]
  • View 1KFX 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 1KFX
  • 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 1KFX, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1kfxl3, region L:2-355 [Jmol] [rasmolscript] [script source]
        - Domain d1kfxl2, region L:356-514 [Jmol] [rasmolscript] [script source]
        - Domain d1kfxl1, region L:515-700 [Jmol] [rasmolscript] [script source]
        - Domain d1kfxs_, region S [Jmol] [rasmolscript] [script source]
  • Fold representative 1kfx 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: [1kfx_L] [1kfx] [1kfx_S]
  • SWISS-PROT database: [P17655] [P04632]
  • Domain organization of [CAN2_HUMAN] [CPNS1_HUMAN] by SWISSPFAM
  • Domains found in 1KFX: [CysPc] [EFh] [calpain_III ] by SMART
  • Other resources with information on 1KFX
  • Community annotation for 1KFX 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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