1B55	Transferase	date	Jan 12, 1999
title	Ph Domain From Bruton'S Tyrosine Kinase In Complex With Inos 4,5-Tetrakisphosphate
authors	K.Djinovic Carugo, E.Baraldi, M.Hyvoenen, P.Lo Surdo, A.M.Riley, B.V.L.Potter, R.O'Brien, J.E.Ladbury, M.Saraste
compound		source
Molecule: Tyrosine-Protein Kinase Btk Chain: A, B Fragment: Ph Domain And Btk Motif Synonym: Bruton'S Agammaglobulinemia Tyrosine Kinase, Btk Ec: 2.7.1.112 Engineered: Yes Other_details: Complex With Inositol 1,3,4,5-Tetrakisphosph		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Cell_line: Bl21 Cell: B-Lymphocyte Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21 (De3) Expression_system_vector: Pbat4 Expression_system_plasmid: Pbat4-Btk3
symmetry	Space Group: I 41 2 2	R_factor 0.234 R_Free 0.350
crystal cell	length a length b length c angle alpha angle beta angle gamma 110.205 110.205 215.528 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.40 Å
ligand	4IP, ZN	enzyme	Transferase E.C.2.7.1.112 BRENDA
related structures	by homologous chain: 1BWN
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structure of the PH domain from Bruton's tyrosine kinase in complex with inositol 1,3,4,5-tetrakisphosphate., Baraldi E, Carugo KD, Hyvonen M, Surdo PL, Riley AM, Potter BV, O'Brien R, Ladbury JE, Saraste M, Structure Fold Des 1999 Apr 15;7(4):449-60. PMID:10196129

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (66 Kb) [Save to disk] Biological Unit Coordinates (1b55.pdb1.gz) 117 Kb LPC: Ligand-Protein Contacts for 1B55 CSU: Contacts of Structural Units for 1B55 Likely Quarternary Molecular Structure file(s) for 1B55 Structure Factors (200 Kb) Retrieve 1B55 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1B55 from S2C, [Save to disk] Re-refined 1b55 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1B55 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 1B55

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 1B55, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1b55a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1b55b_, 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: [1b55_B] [1b55_A] [1b55] SWISS-PROT database: [Q06187] Domain organization of [BTK_HUMAN] by SWISSPFAM Domains found in 1B55: [BTK] [PH ] by SMART

Other resources with information on 1B55

Community annotation for 1B55 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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