1YC4	Cell Cycle	date	Dec 21, 2004
title	Crystal Structure Of Human Hsp90alpha Complexed With Dihydroxyphenylpyrazoles
authors	A.Kreusch, S.Han, A.Brinker, V.Zhou, H.Choi, Y.He, S.A.Lesley, J.Caldwell, X.Gu
compound		source
Molecule: Heat Shock Protein Hsp 90-Alpha Chain: A Fragment: Sequence Database Residues 8-223 Synonym: Hsp 86, N-Terminal Atp Binding Domain Of Hsp90alpha; Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Hspca, Hsp90a, Hspc1 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Prset
symmetry	Space Group: C 2 2 21	R_factor 0.193 R_Free 0.220
crystal cell	length a length b length c angle alpha angle beta angle gamma 71.553 88.380 86.964 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.81 Å
ligand	43P BindingDB	enzyme
related structures	by homologous chain: 1AH6, 1AMW
Primary reference	Crystal structures of human HSP90alpha-complexed with dihydroxyphenylpyrazoles., Kreusch A, Han S, Brinker A, Zhou V, Choi HS, He Y, Lesley SA, Caldwell J, Gu XJ, Bioorg Med Chem Lett. 2005 Mar 1;15(5):1475-8. PMID:15713410

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (44 Kb) [Save to disk] Biological Unit Coordinates (1yc4.pdb1.gz) 39 Kb LPC: Ligand-Protein Contacts for 1YC4 CSU: Contacts of Structural Units for 1YC4 Likely Quarternary Molecular Structure file(s) for 1YC4 Structure Factors (181 Kb) Retrieve 1YC4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1YC4 from S2C, [Save to disk] Re-refined 1yc4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1YC4 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 1YC4

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Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1YC4, from MSDmotif at EBI Fold representative 1yc4 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1yc4_A] SWISS-PROT database: [P07900] Domain organization of [HS90A_HUMAN] by SWISSPFAM Domain found in 1YC4: [HATPase_c ] by SMART Alignments of the sequence of 1YC4 with the sequences similar proteins can be viewed for 1YC4's classification [HS90A_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [HS90A_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1YC4

Community annotation for 1YC4 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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