1SQ0	Blood Clotting	date	Mar 17, 2004
title	Crystal Structure Of The Complex Of The Wild-Type Von Willebrand Factor A1 Domain And Glycoprotein Ib Alpha At 2.6 Angstrom Resolution
authors	J.J.Dumas, R.Kumar, T.Mcdonagh, F.Sullivan, M.L.Stahl, W.S.Somers, L.Mosyak
compound		source
Molecule: Von Willebrand Factor (Vwf) [Contains: Von Willebrand Antigen II]; Chain: A Fragment: A1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Vwf, F8vwf Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21de3 Expression_system_vector_type: Plasmid
Molecule: Platelet Glycoprotein Ib Alpha Chain (Glycoprotein Ibalpha) (Gp-Ib Alpha) (Gpiba) (Gpib-Alpha) (Cd42b-Alpha) (Cd42b) [Contains: Glycocalicin] Chain: B Fragment: Glycoprotein Ib-(Alpha) Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Gp1ba Expression_system: Cricetulus Griseus Expression_system_common: Chinese Hamster Expression_system_taxid: 10029 Expression_system_cell: Cho
symmetry	Space Group: P 21 21 2	R_factor 0.190 R_Free 0.239
crystal cell	length a length b length c angle alpha angle beta angle gamma 72.497 116.104 67.962 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.60 Å
related structures	by homologous chain: 1AUQ, 1IJK, 1OOK, 1P8V
Primary reference	Crystal structure of the wild-type von Willebrand factor A1-glycoprotein Ibalpha complex reveals conformation differences with a complex bearing von Willebrand disease mutations., Dumas JJ, Kumar R, McDonagh T, Sullivan F, Stahl ML, Somers WS, Mosyak L, J Biol Chem 2004 May 28;279(22):23327-34. Epub 2004 Mar 23. PMID:15039442

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (86 Kb) [Save to disk] Biological Unit Coordinates (1sq0.pdb1.gz) 82 Kb CSU: Contacts of Structural Units for 1SQ0 Likely Quarternary Molecular Structure file(s) for 1SQ0 Retrieve 1SQ0 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SQ0 from S2C, [Save to disk]

View 1SQ0 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 1SQ0

Cartoon representation from PDB Cartoon Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1SQ0, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1sq0a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1sq0b_, region B [Jmol] [rasmolscript] [script source] Fold representative 1sq0 from FSSP and Dali (Families of Structurally Similar Proteins) 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: [1sq0_A] [1sq0_B] SWISS-PROT database: [P07359] [P04275] Domain organization of [GP1BA_HUMAN] [VWF_HUMAN] by SWISSPFAM Domains found in 1SQ0: [LRR] [LRRCT] [LRRNT] [LRR_TYP] [VWA ] by SMART Alignments of the sequence of 1SQ0 with the sequences similar proteins can be viewed for 1SQ0's classification [GP1BA_HUMAN] [VWF_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 [GP1BA_HUMAN] [VWF_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1SQ0

Community annotation for 1SQ0 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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