1SD1	Transferase	date	Feb 12, 2004
title	Structure Of Human 5'-Deoxy-5'-Methylthioadenosine Phosphory Complexed With Formycin A
authors	J.E.Lee, E.C.Settembre, K.A.Cornell, M.K.Riscoe, J.R.Sufrin, S.E. P.L.Howell
compound		source
Molecule: 5'-Methylthioadenosine Phosphorylase Chain: A Synonym: Mta Phosphorylase, Mtapase Ec: 2.4.2.28 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Mtap, Msap Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-28a
symmetry	Space Group: P 3 2 1	R_factor 0.180 R_Free 0.198
crystal cell	length a length b length c angle alpha angle beta angle gamma 121.000 121.000 44.200 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.03 Å
ligand	FMC	enzyme	Transferase E.C.2.4.2.28 BRENDA
related structures	by homologous chain: 1K27, 1SD2
Gene Ontology	Chain Function Process Component A
Primary reference	Structural comparison of MTA phosphorylase and MTA/AdoHcy nucleosidase explains substrate preferences and identifies regions exploitable for inhibitor design., Lee JE, Settembre EC, Cornell KA, Riscoe MK, Sufrin JR, Ealick SE, Howell PL, Biochemistry 2004 May 11;43(18):5159-69. PMID:15122881

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (51 Kb) [Save to disk] Biological Unit Coordinates (1sd1.pdb1.gz) 137 Kb LPC: Ligand-Protein Contacts for 1SD1 CSU: Contacts of Structural Units for 1SD1 Likely Quarternary Molecular Structure file(s) for 1SD1 Structure Factors (208 Kb) Retrieve 1SD1 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SD1 from S2C, [Save to disk] Re-refined 1sd1 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1SD1 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 1SD1

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 1SD1, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1sd1a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1d1sd1, region D:1-162,D:339-374 [Jmol] [rasmolscript] [script source]     - Domain d1h1sd1, region D:175-309 [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: [1sd1] [1sd1_A] SWISS-PROT database: [Q13126] Domain organization of [MTAP_HUMAN] by SWISSPFAM

Other resources with information on 1SD1

Community annotation for 1SD1 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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