5YOQ

Human serum albumin complexed with sodium 4-phenylbutyrate

Summary for 5YOQ

• Entry DOI: 10.2210/pdb5yoq/pdb
• Descriptor: Serum albumin, 4-PHENYL-BUTANOIC ACID, PHOSPHATE ION (3 entities in total)
• Functional Keywords: transport protein
• Biological source: Homo sapiens (Human)
• Cellular location: Secreted: P02768
• Total number of polymer chains: 2
• Total formula weight: 133660.78

Authors

Kawai, A.,Otagiri, M. (deposition date: 2017-10-30, release date: 2018-02-07, Last modification date: 2024-11-13)

Primary citation

Kawai, A.,Yamasaki, K.,Enokida, T.,Miyamoto, S.,Otagiri, M.
Crystal structure analysis of human serum albumin complexed with sodium 4-phenylbutyrate.
Biochem Biophys Rep, 13:78-82, 2018

PubMed Abstract: Sodium 4-phenylbutyrate (PB) is an orphan drug for the treatment of urea cycle disorders. It also inhibits the development of endoplasmic reticulum stress, the action of histone deacetylases and as a regulator of the hepatocanalicular transporter. PB is generally considered to have the potential for use in the treatment of the diseases such as cancer, neurodegenerative diseases and metabolic diseases. In a previous study, we reported that PB is primarily bound to human serum albumin (HSA) in plasma and its binding site is drug site 2. However, details of the binding mode of PB to HSA remain unknown. To address this issue, we examined the crystal structure of HSA with PB bound to it. The structure of the HSA-PB complex indicates that the binding mode of PB to HSA is quite similar to that for octanoate or drugs that bind to drug site 2, as opposed to that for other medium-chain length of fatty acids. These findings provide useful basic information related to drug-HSA interactions. Moreover, the information presented herein is valuable in terms of providing safe and efficient treatment and diagnosis in clinical settings.

PubMed: 29387812
DOI: 10.1016/j.bbrep.2018.01.006

Experimental method

X-RAY DIFFRACTION (2.65 Å)