Proteomics

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Quantification of isoaspartate levels in human serum albumin of blood samples


ABSTRACT: We measured the isoaspartate levels in human serum albumin of blood samples from 20 patients with Alzheimer's disease and 20 healthy controls.

INSTRUMENT(S): Orbitrap Fusion

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Blood Plasma

SUBMITTER: Jijing Wang  

LAB HEAD: Roman A. Zubarev

PROVIDER: PXD027563 | Pride | 2022-02-17

REPOSITORIES: Pride

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Publications

First Immunoassay for Measuring Isoaspartate in Human Serum Albumin.

Wang Jijing J   Lundström Susanna L SL   Seelow Sven S   Rodin Sergey S   Meng Zhaowei Z   Astorga-Wells Juan J   Jia Qinyu Q   Zubarev Roman A RA  

Molecules (Basel, Switzerland) 20211105 21


Isoaspartate (isoAsp) is a damaging amino acid residue formed in proteins mostly as a result of spontaneous deamidation of asparaginyl residues. An association has been found between isoAsp in human serum albumin (HSA) and Alzheimer's disease (AD). Here we report on a novel monoclonal antibody (mAb) 1A3 with excellent specificity to isoAsp in the functionally important domain of HSA. Based on 1A3 mAb, an indirect enzyme-linked immunosorbent assay (ELISA) was developed, and the isoAsp occupancy i  ...[more]

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