Dataset Information

Investigation of phycobilisome degradation using top down proteomics in Synechococcus elongatus UTEX 2973

ABSTRACT: Top down mass spectrometry analysis of Synechococcus elongatus UTEX2973 cyanobacteria under nitrogen starvation over time course of 4 hours. A number of phycobiliproteins covalently linked to phycocyanobilin pigments were detected as intact forms. Some of them showed partial degradation of the protein backbones or the pigment structures. NblA, a small protein that is believed to play a key role in phycobilisome degradation was shown to be highly correlated to nitrogen starvation based on its remarkable change of protein abundance.

INSTRUMENT(S): Orbitrap Fusion Lumos

ORGANISM(S): Synechococcus Elongatus

TISSUE(S): Primary Culture

SUBMITTER: Matthew Monroe

LAB HEAD: Himadri B Pakrasi

PROVIDER: PXD014590 | Pride | 2019-08-27

REPOSITORIES: Pride

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Publications

Proteomic Insights into Phycobilisome Degradation, A Selective and Tightly Controlled Process in The Fast-Growing Cyanobacterium <i>Synechococcus elongatus</i> UTEX 2973.

Nagarajan Aparna A Zhou Mowei M Nguyen Amelia Y AY Liberton Michelle M Kedia Komal K Shi Tujin T Piehowski Paul P Shukla Anil A Fillmore Thomas L TL Nicora Carrie C Smith Richard D RD Koppenaal David W DW Jacobs Jon M JM Pakrasi Himadri B HB

Biomolecules 20190816 8

Phycobilisomes (PBSs) are large (3-5 megadalton) pigment-protein complexes in cyanobacteria that associate with thylakoid membranes and harvest light primarily for photosystem II. PBSs consist of highly ordered assemblies of pigmented phycobiliproteins (PBPs) and linker proteins that can account for up to half of the soluble protein in cells. Cyanobacteria adjust to changing environmental conditions by modulating PBS size and number. In response to nutrient depletion such as nitrogen (N) depriva ...[more]

PMID: 31426316

Dataset Information

Investigation of phycobilisome degradation using top down proteomics in Synechococcus elongatus UTEX 2973

Publications

Proteomic Insights into Phycobilisome Degradation, A Selective and Tightly Controlled Process in The Fast-Growing Cyanobacterium <i>Synechococcus elongatus</i> UTEX 2973.

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