1QI8	Oxygen Storage Transport	date	Jun 07, 1999
title	Deoxygenated Structure Of A Distal Pocket Hemoglobin Mutant
authors	A.E.Miele, B.Vallone, S.Santanche, C.Travaglini-Allocatelli, A.B M.Brunori
compound		source
Molecule: Hemoglobin Chain: A, C Fragment: Alpha Chain Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Blood Cell: Erythrocyte Cellular_location: Cytoplasm Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Tb-1 Expression_system_cellular_location: Cytoplasm Expression_system_vector_type: Plasmid Expression_system_plasmid: Pkk223,3
Molecule: Hemoglobin Chain: B, D Fragment: Beta Chain Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Blood Cell: Erythrocyte Cellular_location: Cytoplasm Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Tb-1 Expression_system_cellular_location: Cytoplasm Expression_system_vector_type: Plasmid Expression_system_plasmid: Pkk223,3
symmetry	Space Group: P 1 21 1	R_factor 0.169 R_Free 0.222
crystal cell	length a length b length c angle alpha angle beta angle gamma 63.360 94.320 54.000 90.00 99.43 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	HEM	enzyme
related structures	by homologous chain: 1A01, 1A3N, 1GBU
Gene Ontology	Chain Function Process Component A, C peroxidase activity D, B peroxidase activity
Primary reference	Modulation of ligand binding in engineered human hemoglobin distal pocket., Miele AE, Santanche S, Travaglini-Allocatelli C, Vallone B, Brunori M, Bellelli A, J Mol Biol 1999 Jul 9;290(2):515-24. PMID:10390349

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (101 Kb) [Save to disk] Biological Unit Coordinates (1qi8.pdb1.gz) 95 Kb LPC: Ligand-Protein Contacts for 1QI8 CSU: Contacts of Structural Units for 1QI8 Likely Quarternary Molecular Structure file(s) for 1QI8 Retrieve 1QI8 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QI8 from S2C, [Save to disk]

View 1QI8 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 1QI8

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QI8, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qi8a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1qi8b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1qi8c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1qi8d_, region D [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: [1qi8] [1qi8_C] [1qi8_D] [1qi8_B] [1qi8_A] SWISS-PROT database: [P69905] [P68871] Belongs to the pore-forming globin (globin) family according to TCDB. Belongs to the pore-forming globin (globin) family according to TCDB. Domain organization of [HBA_HUMAN] [HBB_HUMAN] by SWISSPFAM

Other resources with information on 1QI8

Community annotation for 1QI8 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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