1SIG		date
authors
compound		source
symmetry		R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma
method	X-Ray Diffraction	resolution
related structures	by homologous chain: 1IW7
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of a sigma 70 subunit fragment from E. coli RNA polymerase., Malhotra A, Severinova E, Darst SA, Cell 1996 Oct 4;87(1):127-36. PMID:8858155

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (70 Kb) [Save to disk] Biological Unit Coordinates (1sig.pdb1.gz) 66 Kb CSU: Contacts of Structural Units for 1SIG Likely Quarternary Molecular Structure file(s) for 1SIG Structure Factors (175 Kb) Retrieve 1SIG in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SIG from S2C, [Save to disk] Re-refined 1sig structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1SIG 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.

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1sig] [1sig_A] SWISS-PROT database: [P00579]

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