ID   LYSCT_BOVIN             Reviewed;         147 AA.
AC   Q27996;
DT   27-JAN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1996, sequence version 1.
DT   25-MAY-2022, entry version 120.
DE   RecName: Full=Lysozyme C, tracheal isozyme;
DE            EC=3.2.1.17;
DE   AltName: Full=1,4-beta-N-acetylmuramidase C;
DE   Flags: Precursor;
OS   Bos taurus (Bovine).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Laurasiatheria; Artiodactyla; Ruminantia; Pecora; Bovidae;
OC   Bovinae; Bos.
OX   NCBI_TaxID=9913;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=7563116; DOI=10.1007/bf01215177;
RA   Irwin D.M.;
RT   "Evolution of the bovine lysozyme gene family: changes in gene expression
RT   and reversion of function.";
RL   J. Mol. Evol. 41:299-312(1995).
CC   -!- FUNCTION: Lysozymes have primarily a bacteriolytic function; those in
CC       tissues and body fluids are associated with the monocyte-macrophage
CC       system and enhance the activity of immunoagents.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Hydrolysis of (1->4)-beta-linkages between N-acetylmuramic
CC         acid and N-acetyl-D-glucosamine residues in a peptidoglycan and
CC         between N-acetyl-D-glucosamine residues in chitodextrins.;
CC         EC=3.2.1.17;
CC   -!- SUBUNIT: Monomer.
CC   -!- TISSUE SPECIFICITY: Trachea.
CC   -!- MISCELLANEOUS: Lysozyme C is capable of both hydrolysis and
CC       transglycosylation; it shows also a slight esterase activity. It acts
CC       rapidly on both peptide-substituted and unsubstituted peptidoglycan,
CC       and slowly on chitin oligosaccharides.
CC   -!- MISCELLANEOUS: The ruminant gastric lysozymes, which digest symbiotic
CC       bacteria coming with cud from the rumen, are much more resistant to
CC       inactivation by pepsin than are other lysozymes.
CC   -!- SIMILARITY: Belongs to the glycosyl hydrolase 22 family.
CC       {ECO:0000255|PROSITE-ProRule:PRU00680}.
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DR   EMBL; U19466; AAA85544.1; -; Genomic_DNA.
DR   PIR; B49315; B49315.
DR   RefSeq; NP_001073805.1; NM_001080336.1.
DR   AlphaFoldDB; Q27996; -.
DR   SMR; Q27996; -.
DR   PaxDb; Q27996; -.
DR   GeneID; 781146; -.
DR   KEGG; bta:781146; -.
DR   eggNOG; ENOG502S1S1; Eukaryota.
DR   OrthoDB; 1551203at2759; -.
DR   Proteomes; UP000009136; Unplaced.
DR   GO; GO:0003796; F:lysozyme activity; IBA:GO_Central.
DR   GO; GO:0019835; P:cytolysis; IEA:UniProtKB-KW.
DR   GO; GO:0050829; P:defense response to Gram-negative bacterium; IBA:GO_Central.
DR   GO; GO:0050830; P:defense response to Gram-positive bacterium; IBA:GO_Central.
DR   GO; GO:0008152; P:metabolic process; IEA:UniProtKB-KW.
DR   InterPro; IPR001916; Glyco_hydro_22.
DR   InterPro; IPR019799; Glyco_hydro_22_CS.
DR   InterPro; IPR000974; Glyco_hydro_22_lys.
DR   InterPro; IPR023346; Lysozyme-like_dom_sf.
DR   InterPro; IPR030056; Lysozyme_C.
DR   PANTHER; PTHR11407; PTHR11407; 1.
DR   PANTHER; PTHR11407:SF28; PTHR11407:SF28; 1.
DR   Pfam; PF00062; Lys; 1.
DR   PRINTS; PR00137; LYSOZYME.
DR   PRINTS; PR00135; LYZLACT.
DR   SMART; SM00263; LYZ1; 1.
DR   SUPFAM; SSF53955; SSF53955; 1.
DR   PROSITE; PS00128; GLYCOSYL_HYDROL_F22_1; 1.
DR   PROSITE; PS51348; GLYCOSYL_HYDROL_F22_2; 1.
PE   2: Evidence at transcript level;
KW   Antimicrobial; Bacteriolytic enzyme; Disulfide bond; Glycosidase;
KW   Hydrolase; Reference proteome; Signal.
FT   SIGNAL          1..18
FT                   /evidence="ECO:0000250"
FT   CHAIN           19..147
FT                   /note="Lysozyme C, tracheal isozyme"
FT                   /id="PRO_0000018457"
FT   DOMAIN          19..147
FT                   /note="C-type lysozyme"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
FT   ACT_SITE        53
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
FT   ACT_SITE        71
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
FT   DISULFID        24..145
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
FT   DISULFID        48..133
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
FT   DISULFID        83..99
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
FT   DISULFID        95..113
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00680"
SQ   SEQUENCE   147 AA;  15929 MW;  659AD5E5167BDDDD CRC64;
     MKALLILGLL LLSVAVQGKT FKRCELAKTL KNLGLAGYKG VSLANWMCLA KGESNYNTQA
     KNYNPGSKST DYGIFQINSK WWCNDGKTPK AVNGCGVSCS ALLKDDITQA VACAKKIVSQ
     QGITAWVAWK NKCRNRDLTS YVKGCGV