1F23	Viral Protein	date	May 23, 2000
title	Contribution Of A Buried Hydrogen Bond To Hiv-1 Envelope Gly Structure And Function
authors	J.Liu, W.Shu, M.Fagan, J.H.Nunberg, M.Lu
compound		source
Molecule: Transmembrane Glycoprotein Chain: A, B, C, D, E, F Fragment: Ectodomain Synonym: Gp41 Engineered: Yes Mutation: Yes		Organism_scientific: Human Immunodeficiency Virus 1 Organism_taxid: 11676 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pn36(L)C34
symmetry	Space Group: P 1	R_factor 0.191 R_Free 0.270
crystal cell	length a length b length c angle alpha angle beta angle gamma 38.920 41.870 55.980 90.59 88.93 96.28
method	X-Ray Diffraction	resolution	2.30 Å
related structures	by homologous chain: 1SZT, 2SIV
Primary reference	Structural and functional analysis of the HIV gp41 core containing an Ile573 to Thr substitution: implications for membrane fusion., Liu J, Shu W, Fagan MB, Nunberg JH, Lu M, Biochemistry 2001 Mar 6;40(9):2797-807. PMID:11258890

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (79 Kb) [Save to disk] Biological Unit Coordinates (1f23.pdb1.gz) 36 Kb Biological Unit Coordinates (1f23.pdb2.gz) 38 Kb CSU: Contacts of Structural Units for 1F23 Likely Quarternary Molecular Structure file(s) for 1F23 Retrieve 1F23 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1F23 from S2C, [Save to disk]

View 1F23 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 1F23

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1F23, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1f23a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1f23b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1f23c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1f23d_, region D [Jmol] [rasmolscript] [script source]     - Domain d1f23e_, region E [Jmol] [rasmolscript] [script source]     - Domain d1f23f_, region F [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: [1f23_B] [1f23_F] [1f23_A] [1f23] [1f23_E] [1f23_C] [1f23_D] SWISS-PROT database: [Q89797] Domain organization of [Q89797_9HIV1] by SWISSPFAM

Other resources with information on 1F23

Community annotation for 1F23 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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