1SI4		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	CYN, HEM	enzyme
related structures	by homologous chain: 1Y4R, 1YH9
Gene Ontology	Chain Function Process Component A, C peroxidase activity B, D peroxidase activity
Primary reference	Crystal structures of HbA2 and HbE and modeling of hemoglobin delta4: interpretation of the thermal stability and the antisickling effect of HbA2 and identification of the ferrocyanide binding site in Hb., Sen U, Dasgupta J, Choudhury D, Datta P, Chakrabarti A, Chakrabarty SB, Chakrabarty A, Dattagupta JK, Biochemistry 2004 Oct 5;43(39):12477-88. PMID:15449937

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (111 Kb) [Save to disk] Biological Unit Coordinates (1si4.pdb1.gz) 104 Kb LPC: Ligand-Protein Contacts for 1SI4 CSU: Contacts of Structural Units for 1SI4 Likely Quarternary Molecular Structure file(s) for 1SI4 Retrieve 1SI4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SI4 from S2C, [Save to disk]

View 1SI4 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: [1si4] [1si4_A] [1si4_B] [1si4_C] [1si4_D] SWISS-PROT database: [P69905] [P02042] Belongs to the pore-forming globin (globin) family according to TCDB.

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