1HT9	Metal Binding Protein	date	Dec 29, 2000
title	Domain Swapping Ef-Hands
authors	M.Hakansson, A.L.Svensson, J.Fast, S.Linse
compound		source
Molecule: Calbindin D9k Chain: A, B Engineered: Yes Mutation: Yes		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Mm294 Expression_system_plasmid: Picb1
symmetry	Space Group: P 1 21 1	R_factor 0.162 R_Free 0.192
crystal cell	length a length b length c angle alpha angle beta angle gamma 32.605 48.241 41.530 90.00 96.98 90.00
method	X-Ray Diffraction	resolution	1.76 Å
ligand	CA	enzyme
related structures	by homologous chain: 1IGV, 4ICB
Gene Ontology	Chain Function Process Component A, B
Primary reference	An extended hydrophobic core induces EF-hand swapping., Hakansson M, Svensson A, Fast J, Linse S, Protein Sci 2001 May;10(5):927-33. PMID:11316872

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (31 Kb) [Save to disk] Biological Unit Coordinates (1ht9.pdb1.gz) 26 Kb LPC: Ligand-Protein Contacts for 1HT9 CSU: Contacts of Structural Units for 1HT9 Likely Quarternary Molecular Structure file(s) for 1HT9 Retrieve 1HT9 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HT9 from S2C, [Save to disk]

View 1HT9 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 1HT9

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1HT9, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ht9a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1ht9b_, region B [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: [1ht9_B] [1ht9] [1ht9_A] SWISS-PROT database: [P02633] Domain organization of [S100G_BOVIN] by SWISSPFAM Domain found in 1HT9: [S_100 ] by SMART

Other resources with information on 1HT9

Community annotation for 1HT9 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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Images from IMB Jena Image Library of Biological Macromolecules.

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