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Updated: Apr 30, 2026
Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
Published on: October 2, 2017
Proteomic analysis of putative heme-binding proteins in Streptococcus pyogenes
Nanjie Wang1, Jing Zhang, Liang Zhang
1Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou 510632, China. tqyhe@jnu.edu.cn tsunxs@jnu.edu.cn.
This study identified 68 heme-regulatory and 284 heme-binding proteins in Streptococcus pyogenes, revealing impaired glycolysis under heme deficiency. These findings offer new insights into bacterial iron metabolism and pathogenicity.
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Streptococcus pyogenes is a pathogenic bacterium crucial for human health.
- Heme, a vital iron source, significantly impacts bacterial survival and virulence.
Purpose of the Study:
- To identify heme-binding and heme-regulatory proteins in Streptococcus pyogenes.
- To investigate the impact of heme deficiency on bacterial protein expression and metabolic pathways.
Main Methods:
- Combined heme-affinity chromatography, two-dimensional electrophoresis, and mass spectrometry.
- Bioinformatics analysis to assess metabolic pathway changes.
Main Results:
- Identified 68 heme-regulatory proteins and 284 putative heme-binding proteins.
- Observed expression alterations in 37 proteins under heme deficiency.
- Discovered impaired glycolysis as a major metabolic pathway affected by heme deficiency.
Conclusions:
- New potential heme-binding proteins were identified, offering insights into heme transport mechanisms.
- Heme-binding proteins play fundamental roles in bacterial pathways, contributing to pathogenicity.
