1Q4N		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
ligand	CA, CL, PCA, TAM	enzyme
related structures	by homologous chain: 1NM9, 1XH1
Gene Ontology	Chain Function Process Component X
Primary reference	Structural studies of a Phe256Trp mutant of human salivary alpha-amylase: implications for the role of a conserved water molecule in enzyme activity., Ramasubbu N, Sundar K, Ragunath C, Rafi MM, Arch Biochem Biophys 2004 Jan 1;421(1):115-24. PMID:14678792

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (90 Kb) [Save to disk] Biological Unit Coordinates (1q4n.pdb1.gz) 85 Kb LPC: Ligand-Protein Contacts for 1Q4N CSU: Contacts of Structural Units for 1Q4N Likely Quarternary Molecular Structure file(s) for 1Q4N Structure Factors (461 Kb) Retrieve 1Q4N in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1Q4N from S2C, [Save to disk] Re-refined 1q4n structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1Q4N 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: [1q4n] [1q4n_X] SWISS-PROT database: [P04745] Domains found in 1Q4N: [Aamy] [Aamy_C ] by SMART

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