2X1N	Cell Cycle	date	Dec 31, 2009
title	Truncation And Optimisation Of Peptide Inhibitors Of Cdk2, Cyclin A Through Structure Guided Design
authors	G.Kontopidis, M.J.Andrews, C.Mcinnes, A.Plater, L.Innes, S.Renachowski, A.Cowan, P.M.Fischer, N.A.Mcintyre, G.Griffiths, A.L.Barnett, A.M.Z.Slawin, W.Jackson, M.Thomas, D.I.Zheleva, S.Wang, D.G.Blake, N.J.Westwood
compound		source
Molecule: Cell Division Protein Kinase 2 Chain: A, C Synonym: Cyclin-Dependent Kinase 2, P33 Protein Kinase Ec: 2.7.1.37 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Spodoptera Frugiperda Expression_system_taxid: 7108 Expression_system_vector_type: Baculovirus
Molecule: Cyclin-A2 Chain: B, D Fragment: Residues 172-432 Synonym: Cyclin-A Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
Molecule: Ace-Leu-Asn-Pff-Nh2 Chain: H Engineered: Yes		Synthetic: Yes
symmetry	Space Group: P 21 21 21	R_factor 0.19964 R_Free 0.25478
crystal cell	length a length b length c angle alpha angle beta angle gamma 74.558 114.257 157.277 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.75 Å
ligand	ACE, NH2, PFF, X1N BindingDB	enzyme	Transferase E.C.2.7.1.37 BRENDA
note	2X1N supersedes 2WHA
Gene Ontology	Chain Function Process Component A, C nucleotide binding protein kinase activity protein serine/threonine kin... cyclin-dependent protein ser... protein binding ATP binding kinase activity transferase activity transferase activity, transf... cyclin binding histone kinase activity metal ion binding cell cycle checkpoint G1/S transition of mitotic c... S phase of mitotic cell cycl... G2 phase of mitotic cell cyc... G2/M transition of mitotic c... mitotic cell cycle DNA replication DNA repair protein phosphorylation potassium ion transport response to DNA damage stimu... DNA damage response, signal ... cell cycle mitosis meiosis Ras protein signal transduct... blood coagulation positive regulation of cell ... phosphorylation histone phosphorylation anaphase-promoting complex-d... mitotic G1 DNA damage checkp... positive regulation of DNA-d... positive regulation of trans... centrosome duplication cell division regulation of ubiquitin-prot... regulation of gene silencing... cellular response to nitric ... cyclin-dependent protein kin... chromosome, telomeric region... condensed chromosome X chromosome Y chromosome nucleus nucleoplasm transcription factor complex... cytoplasm endosome centrosome microtubule organizing cente... cytosol cytoskeleton Cajal body
Primary reference	Design, synthesis, and evaluation of 2-methyl- and 2-amino-N-aryl-4,5-dihydrothiazolo[4,5-h]quinazolin-8-amines as ring-constrained 2-anilino-4-(thiazol-5-yl)pyrimidine cyclin-dependent kinase inhibitors., McIntyre NA, McInnes C, Griffiths G, Barnett AL, Kontopidis G, Slawin AM, Jackson W, Thomas M, Zheleva DI, Wang S, Blake DG, Westwood NJ, Fischer PM, J Med Chem. 2010 Mar 11;53(5):2136-45. PMID:20146435

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (196 Kb) [Save to disk] Biological Unit Coordinates (2x1n.pdb1.gz) 95 Kb Biological Unit Coordinates (2x1n.pdb2.gz) 94 Kb LPC: Ligand-Protein Contacts for 2X1N CSU: Contacts of Structural Units for 2X1N Structure Factors (481 Kb) Retrieve 2X1N in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2X1N from S2C, [Save to disk] Re-refined 2x1n structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2X1N 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 2X1N

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 2X1N, from MSDmotif at EBI Fold representative 2x1n from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2x1n_A] [2x1n_B] [2x1n_C] [2x1n_D] [2x1n_H] SWISS-PROT database: Domain organization of by SWISSPFAM Alignments of the sequence of 2X1N with the sequences similar proteins can be viewed for 2X1N's classification 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 at ProtoMap. Click on the Cluster number.

Other resources with information on 2X1N

Community annotation for 2X1N at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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