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Overview

Uniprot IDP01011
Protein NameAlpha-1-antichymotrypsin
Gene NameSERPINA3
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
158 DRFTEDAKRLYGSEA
177 FQDSAAAKKLINDYV
178 QDSAAAKKLINDYVK
216 NYIFFKAKWEMPFDP
315 IGELYLPKFSISRDY

Function

Although its physiological function is unclear, it can inhibit neutrophil cathepsin G and mast cell chymase, both of which can convert angiotensin-1 to the active angiotensin-2

Protein Sequence

10 MERMLPLLAL 20 GLLAAGFCPA 30 VLCHPNSPLD 40 EENLTQENQD 50 RGTHVDLGLA 60 SANVDFAFSL 70 YKQLVLKAPD 80 KNVIFSPLSI 90 STALAFLSLG 100 AHNTTLTEIL 110 KGLKFNLTET 120 SEAEIHQSFQ 130 HLLRTLNQSS 140 DELQLSMGNA 150 MFVKEQLSLL 160 DRFTEDAKRL 170 YGSEAFATDF 180 QDSAAAKKLI 190 NDYVKNGTRG 200 KITDLIKDLD 210 SQTMMVLVNY 220 IFFKAKWEMP 230 FDPQDTHQSR 240 FYLSKKKWVM 250 VPMMSLHHLT 260 IPYFRDEELS 270 CTVVELKYTG 280 NASALFILPD 290 QDKMEEVEAM 300 LLPETLKRWR 310 DSLEFREIGE 320 LYLPKFSISR 330 DYNLNDILLQ 340 LGIEEAFTSK 350 ADLSGITGAR 360 NLAVSQVVHK 370 AVLDVFEEGT 380 EASAATAVKI 390 TLLSALVETR 400 TIVRFNRPFL 410 MIIVPTDTQN 420 IFFMSKVTNP KQA

Gene Ontology

Classification GO ID Description
Cellular Component GO:0035578 azurophil granule lumen
Cellular Component GO:0005634 nucleus
Cellular Component GO:0031093 platelet alpha granule lumen
Cellular Component GO:0034774 secretory granule lumen
Molecular Function GO:0003677 DNA binding
Molecular Function GO:0004867 serine-type endopeptidase inhibitor activity
Biological Process GO:0006953 acute-phase response
Biological Process GO:0006954 inflammatory response
Biological Process GO:0030277 maintenance of gastrointestinal epithelium
Biological Process GO:0019216 regulation of lipid metabolic process
Biological Process GO:0034097 response to cytokine
Cellular Component GO:0072562 blood microparticle
Cellular Component GO:0070062 extracellular exosome
Cellular Component GO:0031012 extracellular matrix
Cellular Component GO:0005576 extracellular region
Cellular Component GO:0005615 extracellular space

Reference

[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.

[2] Lin Y, Chen M, Wang D, Yu Y, Chen R et al.. Multi-Proteomic Analysis Reveals the Effect of Protein Lactylation on Matrix and Cholesterol Metabolism in Tendinopathy.. J Proteome Res 22(6):1712-1722. 2023 Jun 2. PMID: 37159428.