2Z21	Sugar Binding Protein	date	May 17, 2007
title	Crystal Structure Of A Five Site Mutated Cyanovirin-N
authors	R.Fromme, Z.Katilene, P.Fromme, G.Ghirlanda
compound		source
Molecule: Cyanovirin-N Chain: A, B Synonym: Cv-N Engineered: Yes Mutation: Yes		Organism_scientific: Nostoc Ellipsosporum Organism_taxid: 45916 Gene: Cyanovirin-N Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: M51
symmetry	Space Group: P 1 21 1	R_factor 0.164 R_Free 0.235
crystal cell	length a length b length c angle alpha angle beta angle gamma 49.457 38.143 56.039 90.00 99.98 90.00
method	X-Ray Diffraction	resolution	1.80 Å
Gene Ontology	Chain Function Process Component A, B
Primary reference	A Monovalent Mutant of Cyanovirin-N Provides Insight into the Role of Multiple Interactions with gp120 for Antiviral Activity(,)., Fromme R, Katiliene Z, Giomarelli B, Bogani F, Mahon JM, Mori T, Fromme P, Ghirlanda G, Biochemistry. 2007 Jul 18;. PMID:17636873

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (74 Kb) [Save to disk] Biological Unit Coordinates (2z21.pdb1.gz) 70 Kb CSU: Contacts of Structural Units for 2Z21 Likely Quarternary Molecular Structure file(s) for 2Z21 Structure Factors (309 Kb) Retrieve 2Z21 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2Z21 from S2C, [Save to disk] Re-refined 2z21 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2Z21 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 2Z21

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 2Z21, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2z21] [2z21_A] [2z21_B] SWISS-PROT database: [P81180] Domain organization of [CVN_NOSEL] by SWISSPFAM Domain found in 2Z21: [CVNH ] by SMART

Other resources with information on 2Z21

Community annotation for 2Z21 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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