4F4T

Human Insulin

4F4T の概要

• エントリーDOI: 10.2210/pdb4f4t/pdb
• 関連するPDBエントリー: 3I3Z 4EWW 4EWX 4EWZ 4EX0 4EX1 4EXX 4EY1 4EY9 4EYD 4EYN 4EYP 4F0N 4F0O 4F1A 4F1B 4F1C 4F1D 4F1F 4F1G 4F4V 4F51
• 分子名称: Insulin A chain, Insulin B chain, ZINC ION, ... (5 entities in total)
• 機能のキーワード: pancreatic hormone, hormone
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Secreted: P01308 P01308
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 11837.03

構造登録者

Favero-Retto, M.P.,Palmieri, L.C.,Lima, L.M.T.R. (登録日: 2012-05-11, 公開日: 2013-05-15, 最終更新日: 2024-11-06)

主引用文献

Favero-Retto, M.P.,Palmieri, L.C.,Souza, T.A.,Almeida, F.C.,Lima, L.M.
Structural meta-analysis of regular human insulin in pharmaceutical formulations.
Eur J Pharm Biopharm, 85:1112-1121, 2013

PubMed Abstract: We have studied regular acting, wild-type human insulin at potency of 100 U/mL from four different pharmaceutical products directly from their final finished formulation by the combined use of mass spectrometry (MS), dynamic light scattering (DLS), small-angle X-ray scattering (SAXS), nuclear magnetic resonance (NMR), and single-crystal protein crystallography (PX). All products showed similar oligomeric assembly in solution as judged by DLS and SAXS measurements. The NMR spectra were compatible with well folded proteins, showing close conformational identity for the human insulin in the four products. Crystallographic assays conducted with the final formulated products resulted in all insulin crystals belonging to the R3 space group with two a dimer in the asymmetric unit, both with the B-chain in the T configuration. Meta-analysis of the 24 crystal structures solved from the four distinct insulin products revealed close similarity between them regardless of variables such as biological origin, product batch, country origin of the product, and analytical approach, revealing a low conformational variability for the converging insulin structural ensemble. We propose the use of MS, SAXS, NMR fingerprint, and PX as a precise chemical and structural proof of folding identity of regular insulin in the final, formulated product.

PubMed: 23692694
DOI: 10.1016/j.ejpb.2013.05.005

実験手法

X-RAY DIFFRACTION (1.637 Å)