1ZSA	Lyase (Oxo-Acid)	date	Jan 09, 1996
title	Carbonic Anhydrase II Mutant E117q, Apo Form
authors	C.A.Lesburg, D.W.Christianson
compound		source
Molecule: Carbonic Anhydrase II Chain: A Synonym: Carbonate Dehydratase, Hca II, Ca Ec: 4.2.1.1 Engineered: Yes Mutation: Yes Other_details: Apo Form		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Ca2 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_plasmid: Pcam-E117q Expression_system_gene: Ca2
symmetry	Space Group: P 1 21 1	R_factor 0.168 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 42.700 41.700 73.000 90.00 104.60 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand		enzyme	Lyase E.C.4.2.1.1 BRENDA
related structures	by homologous chain: 6CA2, 8CA2
Gene Ontology	Chain Function Process Component A
Primary reference	Reversal of the hydrogen bond to zinc ligand histidine-119 dramatically diminishes catalysis and enhances metal equilibration kinetics in carbonic anhydrase II., Huang, CC, Lesburg CA, Kiefer LL, Fierke CA, Christianson DW, Biochemistry 1996 Mar 19;35(11):3439-46. PMID:8639494

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk] Biological Unit Coordinates (1zsa.pdb1.gz) 42 Kb CSU: Contacts of Structural Units for 1ZSA Likely Quarternary Molecular Structure file(s) for 1ZSA Retrieve 1ZSA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1ZSA from S2C, [Save to disk]

View 1ZSA 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 1ZSA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1ZSA, from MSDmotif at EBI Genome occurence of 1ZSA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1zsa__, region [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: [1zsa_A] [1zsa] SWISS-PROT database: [P00918] Domain organization of [CAH2_HUMAN] by SWISSPFAM Domain found in 1ZSA: [Carb_anhydrase ] by SMART

Other resources with information on 1ZSA

Community annotation for 1ZSA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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