1KA1	Hydrolase	date	Oct 31, 2001
title	The Papase Hal2p Complexed With Calcium And Magnesium Ions A Reaction Substrate: Pap
authors	S.Patel, A.Albert, T.L.Blundell
compound		source
Molecule: Halotolerance Protein Hal2 Chain: A Synonym: Hal2p, 3'(2'),5'-Bisphosphate Nucleotidase, Phosph 3'-Nucleotidase, 3'-Phosphoadenylylsulfate 3'-Phosphatase; Ec: 3.1.3.7 Engineered: Yes		Organism_scientific: Saccharomyces Cerevisiae Organism_common: Baker'S Yeast Organism_taxid: 4932 Gene: Hal2 Expression_system: Saccharomyces Cerevisiae Expression_system_common: Baker'S Yeast Expression_system_taxid: 4932 Expression_system_strain: Rs1051 Expression_system_vector_type: Multi-Copy Plasmid Expression_system_plasmid: Prs-421-Hal2
symmetry	Space Group: P 1 21 1	R_factor 0.133 R_Free 0.169
crystal cell	length a length b length c angle alpha angle beta angle gamma 54.875 44.968 72.110 90.00 110.72 90.00
method	X-Ray Diffraction	resolution	1.30 Å
ligand	A3P, BME, CA, MG	enzyme	Hydrolase E.C.3.1.3.7 BRENDA
related structures	by homologous chain: 1K9Z
Gene Ontology	Chain Function Process Component A
Primary reference	Structural enzymology of Li(+)-sensitive/Mg(2+)-dependent phosphatases., Patel S, Martinez-Ripoll M, Blundell TL, Albert A, J Mol Biol 2002 Jul 26;320(5):1087-94. PMID:12126627

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (123 Kb) [Save to disk] Biological Unit Coordinates (1ka1.pdb1.gz) 117 Kb LPC: Ligand-Protein Contacts for 1KA1 CSU: Contacts of Structural Units for 1KA1 Likely Quarternary Molecular Structure file(s) for 1KA1 Structure Factors (526 Kb) Retrieve 1KA1 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1KA1 from S2C, [Save to disk] Re-refined 1ka1 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1KA1 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 1KA1

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1KA1 from the CEP Server. Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1KA1, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ka1a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1a1ka1, region A:103-131 [Jmol] [rasmolscript] [script source]     - Domain d1e1ka1, region A:107-331 [Jmol] [rasmolscript] [script source]     - Domain d1w1ka1, region A:274-560 [Jmol] [rasmolscript] [script source]     - Domain d1q1ka1, region A:5-224 [Jmol] [rasmolscript] [script source]     - Domain d1p1ka1, region A:9-322,A:438-533 [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: [1ka1] [1ka1_A] SWISS-PROT database: [P32179] Domain organization of [HAL2_YEAST] by SWISSPFAM

Other resources with information on 1KA1

Community annotation for 1KA1 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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