1CYN	Isomerase Immunosuppressant	date	May 22, 1995
title	Cyclophilin B Complexed With [D-(Cholinylester)Ser8]-Cyclosp
authors	V.Mikol, J.Kallen, M.D.Walkinshaw
compound		source
Molecule: Peptidyl-Prolyl Cis-Trans Isomerase B Chain: A Synonym: Ppiase B, Rotamase B, Cyclophilin B Ec: 5.2.1.8 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Cyclophilin Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_gene: Cyclophilin
Molecule: Cyclosporin A Chain: C Synonym: Cyclosporine, Ciclosporin, Ciclosporine Engineered: Yes Other_details: D-(Cholinyl)Ser At Position 1		Synthetic: Yes Organism_scientific: Tolypocladium Inflatum Organism_taxid: 29910
symmetry	Space Group: P 21 21 21	R_factor 0.160 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 37.460 46.944 115.442 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.85 Å
ligand	ABA, BMT, DAL, DSN, MLE, MVA, SAR	enzyme	Isomerase E.C.5.2.1.8 BRENDA
related structures	by homologous chain: 1DYW, 1E3B
Gene Ontology	Chain Function Process Component A peptidyl-prolyl cis-trans is... protein binding isomerase activity peptide binding unfolded protein binding protein peptidyl-prolyl isom... protein folding extracellular matrix organiz... endoplasmic reticulum endoplasmic reticulum lumen melanosome
Primary reference	X-ray structure of a cyclophilin B/cyclosporin complex: comparison with cyclophilin A and delineation of its calcineurin-binding domain., Mikol V, Kallen J, Walkinshaw MD, Proc Natl Acad Sci U S A 1994 May 24;91(11):5183-6. PMID:8197205

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (41 Kb) [Save to disk] Biological Unit Coordinates (1cyn.pdb1.gz) 36 Kb LPC: Ligand-Protein Contacts for 1CYN CSU: Contacts of Structural Units for 1CYN Likely Quarternary Molecular Structure file(s) for 1CYN Retrieve 1CYN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1CYN from S2C, [Save to disk]

View 1CYN 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 1CYN

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 1CYN, from MSDmotif at EBI Genome occurence of 1CYN's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1cyna_, region A [Jmol] [rasmolscript] [script source] Fold representative 1cyn 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: [1cyn_A] [1cyn_C] SWISS-PROT database: [P23284] Domain organization of [PPIB_HUMAN] by SWISSPFAM Alignments of the sequence of 1CYN with the sequences similar proteins can be viewed for 1CYN's classification [PPIB_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 [PPIB_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1CYN

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

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