3HDD	Transcription Dna	date	Jul 13, 1998
title	Engrailed Homeodomain Dna Complex
authors	E.Fraenkel, M.A.Rould, K.A.Chambers, C.O.Pabo
compound		source
Molecule: 5'-D(Tptptptpgpcpcpaptpgptpapaptpt Tpapa)-3'; Chain: C Fragment: Homeodomain Engineered: Yes		Synthetic: Yes Other_details: Homeodomain Sequence From Drosophila Melanog (Fruit Fly);
Molecule: 5'-D(Aptptpapgpgptpapaptptpapcpapt Apapa)-3'; Chain: D Fragment: Homeodomain Engineered: Yes		Synthetic: Yes Other_details: Homeodomain Sequence From Drosophila Melanog (Fruit Fly);
Molecule: Engrailed Homeodomain Chain: A, B Engineered: Yes		Organism_scientific: Drosophila Melanogaster Organism_common: Fruit Fly Organism_taxid: 7227 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: C 1 2 1	R_factor 0.204 R_Free 0.232
crystal cell	length a length b length c angle alpha angle beta angle gamma 130.620 45.520 72.930 90.00 118.32 90.00
method	X-Ray Diffraction	resolution	2.20 Å
related structures	by homologous chain: 1HDD, 1P7I
Gene Ontology	Chain Function Process Component A, B
Primary reference	Engrailed homeodomain-DNA complex at 2.2 A resolution: a detailed view of the interface and comparison with other engrailed structures., Fraenkel E, Rould MA, Chambers KA, Pabo CO, J Mol Biol 1998 Nov 27;284(2):351-61. PMID:9813123

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (41 Kb) [Save to disk] Biological Unit Coordinates (3hdd.pdb1.gz) 37 Kb CSU: Contacts of Structural Units for 3HDD Likely Quarternary Molecular Structure file(s) for 3HDD Retrieve 3HDD in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3HDD from S2C, [Save to disk]

View 3HDD 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 3HDD

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 3HDD, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d3hdda_, region A [Jmol] [rasmolscript] [script source]     - Domain d3hddb_, 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: [3hdd_B] [3hdd_A] [3hdd_D] [3hdd] [3hdd_C] SWISS-PROT database: [P02836] Domain organization of [HMEN_DROME] by SWISSPFAM Domain found in 3HDD: [HOX ] by SMART

Other resources with information on 3HDD

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

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Images from IMB Jena Image Library of Biological Macromolecules.

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