2PKA	Serine Proteinase	date	May 21, 1984
title	Refined 2 Angstroms X-Ray Crystal Structure Of Porcine Pancreatic Kallikrein A, A Specific Trypsin-Like Serine Proteinase. Crystallization, Structure Determination, Crystallographic Refinement, Structure And Its Comparison With Bovine Trypsin
authors	W.Bode, Z.Chen
compound		source
Molecule: Kallikrein A Chain: A, X Ec: 3.4.21.35 Engineered: Yes		Organism_scientific: Sus Scrofa Organism_common: Pig Organism_taxid: 9823
Molecule: Kallikrein A Chain: B, Y Ec: 3.4.21.35 Engineered: Yes		Organism_scientific: Sus Scrofa Organism_common: Pig Organism_taxid: 9823
symmetry	Space Group: P 41 21 2	R_factor 0.220 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 90.200 90.200 159.400 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.05 Å
ligand	BEN	enzyme	Hydrolase E.C.3.4.21.35 BRENDA
related structures	by homologous chain: 1HIA, 1SPJ
Gene Ontology	Chain Function Process Component A, X Y, B
Primary reference	Refined 2 A X-ray crystal structure of porcine pancreatic kallikrein A, a specific trypsin-like serine proteinase. Crystallization, structure determination, crystallographic refinement, structure and its comparison with bovine trypsin., Bode W, Chen Z, Bartels K, Kutzbach C, Schmidt-Kastner G, Bartunik H, J Mol Biol 1983 Feb 25;164(2):237-82. PMID:6551452

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (75 Kb) [Save to disk] Biological Unit Coordinates (2pka.pdb1.gz) 36 Kb Biological Unit Coordinates (2pka.pdb2.gz) 36 Kb Biological Unit Coordinates (2pka.pdb3.gz) 70 Kb LPC: Ligand-Protein Contacts for 2PKA CSU: Contacts of Structural Units for 2PKA Likely Quarternary Molecular Structure file(s) for 2PKA Retrieve 2PKA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2PKA from S2C, [Save to disk]

View 2PKA 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 2PKA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2PKA, from MSDmotif at EBI Genome occurence of 2PKA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2pka.1, region A:,B [Jmol] [rasmolscript] [script source]     - Domain d2pka.2, region X:,Y [Jmol] [rasmolscript] [script source] 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: [2pka_A] [2pka_Y] [2pka_B] [2pka_X] [2pka] SWISS-PROT database: [P00752] Domain organization of [KLK_PIG] by SWISSPFAM Domain found in 2PKA: [Tryp_SPc ] by SMART

Other resources with information on 2PKA

Community annotation for 2PKA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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