2IC4	Immune System	date	Sep 12, 2006
title	Solution Structure Of The His402 Allotype Of The Factor H Scr6-Scr7-Scr8 Fragment
authors	A.N.Fernando, P.B.Furtado, H.E.Gilbert, S.J.Clark, A.J.Day, R.B.Sim, S.J.Perkins
compound		source
Molecule: Complement Factor H Chain: A Fragment: Factor H Scr6-Scr7-Scr8 Synonym: H Factor 1 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Cfh, Hf, Hf1 Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet14b
symmetry	Space Group: P 1	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 1.000 1.000 1.000 90.00 90.00 90.00
method	Solution Scattering	resolution
Gene Ontology	Chain Function Process Component A protein binding heparin binding heparan sulfate proteoglycan... complement activation complement activation, alter... regulation of complement act... innate immune response extracellular region extracellular space
Primary reference	Associative and Structural Properties of the Region of Complement Factor H Encompassing the Tyr402His Disease-related Polymorphism and its Interactions with Heparin., Fernando AN, Furtado PB, Clark SJ, Gilbert HE, Day AJ, Sim RB, Perkins SJ, J Mol Biol. 2007 Apr 27;368(2):564-81. Epub 2007 Feb 22. PMID:17362990

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (7 Kb) [Save to disk] Biological Unit Coordinates (2ic4.pdb1.gz) 5 Kb CSU: Contacts of Structural Units for 2IC4 Likely Quarternary Molecular Structure file(s) for 2IC4 Retrieve 2IC4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2IC4 from S2C, [Save to disk]

View 2IC4 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 2IC4

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Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 2IC4, from MSDmotif at EBI Fold representative 2ic4 from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2ic4_A] SWISS-PROT database: [P08603] Domain organization of [CFAH_HUMAN] by SWISSPFAM Domain found in 2IC4: [CCP ] by SMART Alignments of the sequence of 2IC4 with the sequences similar proteins can be viewed for 2IC4's classification [CFAH_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [CFAH_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 2IC4

Community annotation for 2IC4 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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