Protein Name:
N-alpha-acetyltransferase 50
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UniprotKB/SwissProt ID: Q6PGB6 (Q6PGB6)
Gene Name:
Naa50
Organism: Mus musculus (Mouse)
Function: N-alpha-acetyltransferase that acetylates the N-terminus of proteins that retain their initiating methionine (By similarity). Has a broad substrate specificity: able to acetylate the initiator methionine of most peptides, except for those with a proline in second position (By similarity). Also displays N-epsilon-acetyltransferase activity by mediating acetylation of the side chain of specific lysines on proteins (By similarity). Autoacetylates in vivo (By similarity). The relevance of N-epsilon-acetyltransferase activity is however unclear: able to acetylate H4 in vitro, but this result has not been confirmed in vivo (By similarity). Component of N-alpha-acetyltransferase complexes containing NAA10 and NAA15, which has N-alpha-acetyltransferase activity (By similarity). Does not influence the acetyltransferase activity of NAA10 (By similarity). However, it negatively regulates the N-alpha-acetyltransferase activity of the N-terminal acetyltransferase A complex (also called the NatA complex) (By similarity). The multiprotein complexes probably constitute the major contributor for N-terminal acetylation at the ribosome exit tunnel, with NAA10 acetylating all amino termini that are devoid of methionine and NAA50 acetylating other peptides (By similarity). Required for sister chromatid cohesion during mitosis by promoting binding of CDCA5/sororin to cohesin: may act by counteracting the function of NAA10 (By similarity)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Cytoplasm. Nucleus
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Graphical Visualization of S-nitrosylation Sites:
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The S-nitrosylation sites of Q6PGB6
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| No. |
Position |
S-nitrosylated Peptide |
Secondary Structure of S-nitrosylated Peptide |
Solvent Accessibility of nitrosylated Site |
PubMed ID |
| 1 |
79 |
QKRLYIMTLG C LAPYRRLGIG |
CCCCCEECCC C CHHCHHHHHH |
3.09% |
20925432
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