Reviewed, UniProtKB/Swiss-Prot P12069 (LYSC3_PIG)

Names and origin

Protein names	Recommended name:     Lysozyme C-3     EC=3.2.1.17 Alternative name(s):     1,4-beta-N-acetylmuramidase C
Organism	Sus scrofa (Pig)
Taxonomic identifier	9823 [NCBI]
Taxonomic lineage	Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Laurasiatheria › Cetartiodactyla › Suina › Suidae › Sus

Protein attributes

Sequence length	148 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Evidence at protein level.

General annotation (Comments)

Function	Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents.
Catalytic activity	Hydrolysis of (1->4)-beta-linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in a peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrins.
Subunit structure	Monomer.
Miscellaneous	Lysozyme C is capable of both hydrolysis and transglycosylation; it shows also a slight esterase activity. It acts rapidly on both peptide-substituted and unsubstituted peptidoglycan, and slowly on chitin oligosaccharides.
Sequence similarities	Belongs to the glycosyl hydrolase 22 family.

Ontologies

Keywords
Biological process	Digestion
Domain	Signal
Molecular function	Antimicrobial Bacteriolytic enzyme Glycosidase Hydrolase
PTM	Disulfide bond
Technical term	Direct protein sequencing
Gene Ontology (GO)
Biological process	cell wall macromolecule catabolic process Inferred from electronic annotation. Source: InterPro cytolysis Inferred from electronic annotation. Source: UniProtKB-KW defense response to bacterium Inferred from electronic annotation. Source: UniProtKB-KW digestion Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	lysozyme activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Signal peptide	1 – 18	18	Ref.2
	Chain	19 – 148	130	Lysozyme C-3		PRO_0000018480
Sites
	Active site	53	1	By similarity
	Active site	71	1	By similarity
Amino acid modifications
	Disulfide bond	24 ↔ 146		By similarity
	Disulfide bond	48 ↔ 134		By similarity
	Disulfide bond	83 ↔ 99		By similarity
	Disulfide bond	95 ↔ 113		By similarity

Sequences

	Sequence		Length	Mass (Da)
	P12069-1 [UniParc]. Last modified November 1, 1997. Version 2. Checksum: 76AA67BFABBD64E6	FASTA	148	16,711
	10 20 30 40 50 60 MKTLLVLALL LLSVSVQAKV YDRCEFARIL KKSGMDGYRG VSLANWVCLA KWESNFNTKA 70 80 90 100 110 120 TNYNPGSQST DYGIFQINSR YWCNDGKTPK AVNACHISCK VLLDDDLSQD IECAKRVVRD 130 140 PQGIKAWVAW KAHCQNKDVS QYIRGCKL

References

[1]	Echetebu Z.O., Nevils M., Bixby J.A., Roberts R.M., Trout W.E. Submitted (FEB-1996) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA].
[2]	"Episodic evolution in the stomach lysozymes of ruminants." Jolles J., Jolles P., Bowman B.H., Prager E.M., Stewart C.-B., Wilson A.C. J. Mol. Evol. 28:528-535(1989) [PubMed: 2504928] [Abstract] Cited for: PROTEIN SEQUENCE OF 19-148. Tissue: Stomach.

Cross-references

Sequence databases
EMBLGenBankDDBJ	U44435 mRNA. Translation: AAA86644.1.
PIR	S10047.
RefSeq	NP_999557.1.
UniGene	Ssc.53737
3D structure databases
HSSP	HSSP built from PDB template 1IVM based on UniProtKB P08905.
ModBase	Search...
Protein family/group databases
CAZy	GH22. Glycoside Hydrolase Family 22.
Genome annotation databases
GeneID	100157211.
KEGG	ssc:100157211.
Phylogenomic databases
HOVERGEN	P12069.
Enzyme and pathway databases
BRENDA	3.2.1.17. 249.
Family and domain databases
InterPro	IPR001916. Glyco_hydro_22. IPR019799. Glyco_hydro_22_CS. IPR000974. Glyco_hydro_22_lys. [Graphical view]
Pfam	PF00062. Lys. 1 hit. [Graphical view]
PRINTS	PR00137. LYSOZYME. PR00135. LYZLACT.
SMART	SM00263. LYZ1. 1 hit. [Graphical view]
PROSITE	PS00128. LACTALBUMIN_LYSOZYME_1. 1 hit. PS51348. LACTALBUMIN_LYSOZYME_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

LYSC3_PIG

Accession

Primary (citable) accession number: P12069

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 1, 1989
Last sequence update:	November 1, 1997
Last modified:	October 13, 2009
This is version 71 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HPI (Human Proteome Initiative)