1GO4	Cell Cycle	date	Oct 17, 2001
title	Crystal Structure Of Mad1-Mad2 Reveals A Conserved Mad2 Bind In Mad1 And Cdc20.
authors	L.Sironi, M.Mapelli, K.T.Jeang, A.Musacchio
compound		source
Molecule: Mitotic Spindle Assembly Checkpoint Protein Mad2a Chain: A, B, C, D Synonym: Hsmad2,Mitotic Arrest Deficient 2-Like Protein 1,M Protein 1; Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Mad2l1, Mad2 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Xl1blue Expression_system_plasmid: Pqe30 Other_details: Dicistronic Vector
Molecule: Mitotic Spindle Assembly Checkpoint Protein Mad1 Chain: E, F, G, H Fragment: Residues 485-584 Synonym: Mitotic Arrest Deficient 1-Like Protein 1,Mad1-Lik 1,Mitotic Checkpoint Mad1 Protein Homolog,Hmad1,Tax-Binding 181; Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Mad1l1, Mad1, Txbp181 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Xl1blue Expression_system_plasmid: Pqe30 Other_details: Dicistronic Vector
symmetry	Space Group: P 1 21 1	R_factor 0.240 R_Free 0.268
crystal cell	length a length b length c angle alpha angle beta angle gamma 111.037 63.023 139.511 90.00 111.65 90.00
method	X-Ray Diffraction	resolution	2.05 Å
note	1GO4 is a representative structure
related structures	by homologous chain: 1S2H
Gene Ontology	Chain Function Process Component A, B, C, D F, E, H, G
Primary reference	Crystal structure of the tetrameric Mad1-Mad2 core complex: implications of a 'safety belt' binding mechanism for the spindle checkpoint., Sironi L, Mapelli M, Knapp S, De Antoni A, Jeang KT, Musacchio A, EMBO J 2002 May 15;21(10):2496-506. PMID:12006501

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (202 Kb) [Save to disk] Biological Unit Coordinates (1go4.pdb1.gz) 195 Kb CSU: Contacts of Structural Units for 1GO4 Likely Quarternary Molecular Structure file(s) for 1GO4 Structure Factors (1283 Kb) Retrieve 1GO4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1GO4 from S2C, [Save to disk] Re-refined 1go4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1GO4 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 1GO4

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 1GO4, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1go4a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1go4b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1go4c_, region C [Jmol] [rasmolscript] [script source]     - Domain d1go4d_, region D [Jmol] [rasmolscript] [script source]     - Domain d1go4e_, region E [Jmol] [rasmolscript] [script source]     - Domain d1go4f_, region F [Jmol] [rasmolscript] [script source]     - Domain d1go4g_, region G [Jmol] [rasmolscript] [script source]     - Domain d1go4h_, region H [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: [1go4_B] [1go4_H] [1go4_E] [1go4_C] [1go4_D] [1go4_A] [1go4_F] [1go4_G] [1go4] SWISS-PROT database: [Q9Y6D9] [Q13257] Domain organization of [MD1L1_HUMAN] [MD2L1_HUMAN] by SWISSPFAM

Other resources with information on 1GO4

Community annotation for 1GO4 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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