1HK2	Plasma Protein	date	Mar 05, 2003
title	Human Serum Albumin Mutant R218h Complexed With Thyroxine (3,3',5,5'-Tetraiodo-L-Thyronine)
authors	I.Petitpas, C.E.Petersen, C.E.Ha, A.A.Bhattacharya, P.A.Zunszain, J.Ghuman, N.V.Bhagavan, S.Curry
compound		source
Molecule: Serum Albumin Chain: A Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Pichia Pastoris Expression_system_taxid: 4922
symmetry	Space Group: P 1 21 1	R_factor 0.190 R_Free 0.244
crystal cell	length a length b length c angle alpha angle beta angle gamma 58.942 88.391 59.992 90.00 103.00 90.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand	T44	enzyme
related structures	by homologous chain: 1HK3, 1TF0
Gene Ontology	Chain Function Process Component A DNA binding fatty acid binding copper ion binding protein binding drug binding zinc ion binding lipid binding toxic substance binding antioxidant activity oxygen binding enzyme binding pyridoxal phosphate binding cell surface binding metal ion binding chaperone binding platelet degranulation lipid metabolic process transport response to stress response to nutrient blood coagulation bile acid metabolic process cellular response to starvat... response to organic substanc... bile acid and bile salt tran... hemolysis by symbiont of hos... platelet activation lipoprotein metabolic proces... negative regulation of apopt... negative regulation of progr... sodium-independent organic a... small molecule metabolic pro... positive regulation of circa... response to mercury ion maintenance of mitochondrion... transmembrane transport response to platinum ion extracellular region basement membrane extracellular space cytoplasm platelet alpha granule lumen... protein complex extracellular vesicular exos...
Primary reference	Structural basis of albumin-thyroxine interactions and familial dysalbuminemic hyperthyroxinemia., Petitpas I, Petersen CE, Ha CE, Bhattacharya AA, Zunszain PA, Ghuman J, Bhagavan NV, Curry S, Proc Natl Acad Sci U S A 2003 May 27;100(11):6440-5. Epub 2003 May 12. PMID:12743361

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (95 Kb) [Save to disk] Biological Unit Coordinates (1hk2.pdb1.gz) 89 Kb LPC: Ligand-Protein Contacts for 1HK2 CSU: Contacts of Structural Units for 1HK2 Likely Quarternary Molecular Structure file(s) for 1HK2 Structure Factors (104 Kb) Retrieve 1HK2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HK2 from S2C, [Save to disk] Re-refined 1hk2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1HK2 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 1HK2

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 1HK2, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1hk2a2, region A:197-388 [Jmol] [rasmolscript] [script source]     - Domain d1hk2a3, region A:389-576 [Jmol] [rasmolscript] [script source]     - Domain d1hk2a1, region A:5-196 [Jmol] [rasmolscript] [script source]     - Domain d1f1hk2, region K:101-468 [Jmol] [rasmolscript] [script source] Fold representative 1hk2 from FSSP and Dali (Families of Structurally Similar Proteins) Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1hk2_A] SWISS-PROT database: [P02768] Domain organization of [ALBU_HUMAN] by SWISSPFAM Domain found in 1HK2: [ALBUMIN ] by SMART Alignments of the sequence of 1HK2 with the sequences similar proteins can be viewed for 1HK2's classification [ALBU_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 [ALBU_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1HK2

Community annotation for 1HK2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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