Structure of PDB 4ac4 Chain B

Receptor sequence

>4ac4B (length=115) Species: 9606 (Homo sapiens)

CPLMVKVLDAVRGSPAINVAVHVFRKAADDTWEPFASGKTSESGELHGLT
TEEEFVEGIYKVEIDTKSYWKALGISPFHEHAEVVFTANDSGPRRYTIAA
LLSPYSYSTTAVVTN

3D structure

• PDB: 4ac4 Crystallographic Study of Novel Transthyretin Ligands Exhibiting Negative-Cooperativity between Two Thyroxine Binding Sites.
• Chain: B
• Resolution: 1.8 Å

Interaction with ligand

Site #	Ligand	Ligand chain	Binding residues on receptor (original residue number in PDB)	Binding residues on receptor (residue number reindexed from 1)	Binding affinity
BS01	HKA	B	K15 L17	K6 L8	BindingDB: IC50=41000nM

Gene Ontology

Molecular Function

• GO:0005179 hormone activity
• GO:0005515 protein binding
• GO:0042802 identical protein binding
• GO:0070324 thyroid hormone binding

Biological Process

• GO:0006144 purine nucleobase metabolic process
• GO:0007165 signal transduction

Cellular Component

• GO:0005576 extracellular region
• GO:0005615 extracellular space
• GO:0005737 cytoplasm
• GO:0035578 azurophil granule lumen
• GO:0070062 extracellular exosome

External links

• PDB: RCSB:4ac4, PDBe:4ac4, PDBj:4ac4
• PDBsum: 4ac4
• PubMed: 22973437
• UniProt: P02766|TTHY_HUMAN Transthyretin (Gene Name=TTR)