3HKN	Lyase	date	May 25, 2009
title	Human Carbonic Anhydrase II In Complex With (2,3,4,6-Tetra-O Beta-D-Galactopyranosyl) -(1-4)-1,2,3,6-Tetra-O-Acetyl-1-Th Glucopyranosylsulfonamide
authors	B.Paul, S.A.Poulsen, A.Hofmann
compound		source
Molecule: Carbonic Anhydrase 2 Chain: A Synonym: Carbonic Anhydrase II, Ca-II, Carbonate Dehydratas Carbonic Anhydrase C, Cac; Ec: 4.2.1.1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Ca2, Carbonic Anhydrase II Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet8c
symmetry	Space Group: P 1 21 1	R_factor 0.198 R_Free 0.220
crystal cell	length a length b length c angle alpha angle beta angle gamma 42.400 41.700 72.500 90.00 104.50 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	GOL, Z3K, Z3L, ZN BindingDB	enzyme	Lyase E.C.4.2.1.1 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	S-glycosyl primary sulfonamides--a new structural class for selective inhibition of cancer-associated carbonic anhydrases., Lopez M, Paul B, Hofmann A, Morizzi J, Wu QK, Charman SA, Innocenti A, Vullo D, Supuran CT, Poulsen SA, J Med Chem. 2009 Oct 22;52(20):6421-32. PMID:19827837

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (49 Kb) [Save to disk] Biological Unit Coordinates (3hkn.pdb1.gz) 44 Kb LPC: Ligand-Protein Contacts for 3HKN CSU: Contacts of Structural Units for 3HKN Structure Factors (982 Kb) Retrieve 3HKN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3HKN from S2C, [Save to disk] Re-refined 3hkn structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3HKN 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 3HKN

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 3D motif for 3HKN, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3hkn] [3hkn_A] SWISS-PROT database: [P00918] Domain organization of [CAH2_HUMAN] by SWISSPFAM Domain found in 3HKN: [Carb_anhydrase ] by SMART

Other resources with information on 3HKN

Community annotation for 3HKN at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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