3SEM	Signaling Protein Inhibitor	date	Nov 02, 1998
title	Sem5 Sh3 Domain Complexed With Peptoid Inhibitor
authors	J.T.Nguyen, C.W.Turck, F.E.Cohen, R.N.Zuckermann, W.A.Lim
compound		source
Molecule: Sex Muscle Abnormal Protein 5 Chain: A, B Fragment: C-Terminal Sh3 Engineered: Yes		Organism_scientific: Caenorhabditis Elegans Organism_taxid: 6239 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3)
Molecule: Sh3 Peptoid Inhibitor Chain: C, D Engineered: Yes		Synthetic: Yes
symmetry	Space Group: P 1 21 1	R_factor 0.248 R_Free 0.310
crystal cell	length a length b length c angle alpha angle beta angle gamma 27.050 68.530 35.020 90.00 93.86 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	NMC	enzyme
related structures	by homologous chain: 1K76, 2SEM
Primary reference	Exploiting the basis of proline recognition by SH3 and WW domains: design of N-substituted inhibitors., Nguyen JT, Turck CW, Cohen FE, Zuckermann RN, Lim WA, Science 1998 Dec 11;282(5396):2088-92. PMID:9851931

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (27 Kb) [Save to disk] Biological Unit Coordinates (3sem.pdb1.gz) 12 Kb Biological Unit Coordinates (3sem.pdb2.gz) 12 Kb LPC: Ligand-Protein Contacts for 3SEM CSU: Contacts of Structural Units for 3SEM Likely Quarternary Molecular Structure file(s) for 3SEM Retrieve 3SEM in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3SEM from S2C, [Save to disk]

View 3SEM 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 3SEM

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 3SEM, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d3sema_, region A [Jmol] [rasmolscript] [script source]     - Domain d3semb_, 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: [3sem] [3sem_D] [3sem_A] [3sem_C] [3sem_B] SWISS-PROT database: [P29355] Domain organization of [SEM5_CAEEL] by SWISSPFAM Domain found in 3SEM: [SH3 ] by SMART

Other resources with information on 3SEM

Community annotation for 3SEM at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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