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. 2024 Jan 6;8:6. doi: 10.1038/s41698-023-00493-7

Fig. 4. Mass spectrometry analysis to identify a previously unknown PLK1 phosphorylation site on NUMB.

Fig. 4

a Bottom-up mass spectrometry analysis after in-vitro kinase assay followed by an error-tolerant search revealed NUMB peptide with phosphorylated serines at positions S413. b Clustal Omega multiple sequence alignment for NUMB protein sequences showed conserved Ser413 among different vertebrate species.