2HCI	Immune System	date	Jun 16, 2006
title	Structure Of Human Mip-3a Chemokine
authors	Z.A.Malik, B.F.Tack
compound		source
Molecule: Small Inducible Cytokine A20 Chain: A, B Synonym: Ccl20, Macrophage Inflammatory Protein 3 Alpha, Mip-3-Alpha, Liver And Activation-Regulated Chemokine, Cc Chemokine Larc, Beta Chemokine Exodus-1, Mip-3a; Engineered: Yes		Synthetic: Yes Other_details: The Protein Was Chemically Synthesized. The Sequence Of The Protein Is Naturally Found In Homo Sapiens (Human).
symmetry	Space Group: I 4	R_factor 0.206 R_Free 0.255
crystal cell	length a length b length c angle alpha angle beta angle gamma 83.991 83.991 57.221 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.81 Å
ligand	PEG, SO3, SO4	enzyme
Gene Ontology	Chain Function Process Component A, B cytokine activity chemokine activity chemotaxis inflammatory response immune response signal transduction cell-cell signaling chemokinesis defense response to bacteriu... extracellular region extracellular space
Primary reference	Structure of human MIP-3alpha chemokine., Malik ZA, Tack BF, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2006 Jul 1;62(Pt, 7):631-4. Epub 2006 Jun 30. PMID:16820679

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (31 Kb) [Save to disk] Biological Unit Coordinates (2hci.pdb1.gz) 26 Kb LPC: Ligand-Protein Contacts for 2HCI CSU: Contacts of Structural Units for 2HCI Likely Quarternary Molecular Structure file(s) for 2HCI Structure Factors (267 Kb) Retrieve 2HCI in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2HCI from S2C, [Save to disk] Re-refined 2hci structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2HCI 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 2HCI

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 2HCI, from MSDmotif at EBI Fold representative 2hci from FSSP and Dali (Families of Structurally Similar Proteins)

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2hci_A] [2hci_B] SWISS-PROT database: [P78556] Domain organization of [CCL20_HUMAN] by SWISSPFAM Domain found in 2HCI: [SCY ] by SMART Alignments of the sequence of 2HCI with the sequences similar proteins can be viewed for 2HCI's classification [CCL20_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 [CCL20_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 2HCI

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

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