1QBU	Aspartyl Protease	date	Apr 25, 1997
title	Hiv-1 Protease Inhibitors Wiih Low Nanomolar Potency
authors	P.Ala, C.H.Chang
compound		source
Molecule: Hiv-1 Protease Chain: A, B Ec: 3.4.23.16 Engineered: Yes		Organism_scientific: Human Immunodeficiency Virus 1 Organism_taxid: 11676 Strain: Bh102 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 61	R_factor 0.190 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 62.800 62.800 83.500 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	846 BindingDB	enzyme	Hydrolase E.C.3.4.23.16 BRENDA
related structures	by homologous chain: 1HVR, 1QBR
Gene Ontology	Chain Function Process Component A, B
Primary reference	Cyclic urea amides: HIV-1 protease inhibitors with low nanomolar potency against both wild type and protease inhibitor resistant mutants of HIV., Jadhav PK, Ala P, Woerner FJ, Chang CH, Garber SS, Anton ED, Bacheler LT, J Med Chem 1997 Jan 17;40(2):181-91. PMID:9003516

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (42 Kb) [Save to disk] Biological Unit Coordinates (1qbu.pdb1.gz) 38 Kb LPC: Ligand-Protein Contacts for 1QBU CSU: Contacts of Structural Units for 1QBU Likely Quarternary Molecular Structure file(s) for 1QBU Retrieve 1QBU in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QBU from S2C, [Save to disk]

View 1QBU 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 1QBU

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QBU, from MSDmotif at EBI Genome occurence of 1QBU's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qbua_, region A [Jmol] [rasmolscript] [script source]     - Domain d1qbub_, 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: [1qbu] [1qbu_A] [1qbu_B] SWISS-PROT database: [P04585] Domain organization of [POL_HV1H2] by SWISSPFAM

Other resources with information on 1QBU

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

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