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1
Table 1. Involvement of Protease In Diseases
2
Route of entry
Mode of transmission
Pathogen
Disease
Type of pathogen
Proteases
3
Mucosal surfaces Mouth and respiratory tractsInhalation or ingestion of infective material (e.g. saliva droplets, spores)
Measles virus
Measles
Paramyxovirus
serine protease 
4
Influenza virus
Influenza
Orthomyxovirus
serine proteases
5
Varicella-zoster
Chickenpox
Harpesvirus
serine protease
6
Epstein-Barr virus
Mononucleosis
Harpesvirus
serine protease
7
Streptococcus pyogenes
Tonsilitis
Gram-positive bacteria
serine, metallo- protease
8
Haemophilus influenzae
Pneumonia,meningitis
Gram-negative bacteria
serine, metallo- protease
9
Neisseria Meningitidis
Meningococcal meningitis
Gram-negative bacteria
IgA specific serine endopeptidase
10
IgA specific metallo endopeptidase
11
12
Gastrointestinal tractContaminated water or foodRotavirusDiarrheaRotavirus
protease native to the host gut
13
Hepatitis A
Jaundice
Picornavirus
trypsin-like serine proteases
14
Salmonella enteritidis
Food poisoning
Gram-negative bacterium
PgtE-outer membrane protease
15
S. typhimurium
16
Vibrio cholerae
Cholera
Gram-negative bacterium
haemagglutinin/protease 
17
Salmonella typhi
Typhoid fever
Gram-negative bacterium
cystein proteases caspase-1
18
19
Reproductive tract and other routsSexual transmission / infected blood
Hepatitis B virus
Hepatitis B
Hepadnavirus
V8 protease
20
Human immunodeficiency
Acquired immunodeficiency
21
virus (HIV)
syndrome (AIDS) Retrovirus
Retrovirus
Retroviral aspartyl protease 
22
23
Sexual transmission
Neisseria gonorrhoeae
Gonorrhea
Gram-negative bacterium
IgA specific serine endopeptidase
24
Treponema pallidum
Syphilis
Bacterium (spirochete)
Metalloprotease
25
26
Oppurtunistic PathogensResident microbiota Candida albicans Candidiasis, thrushFungusAspartyl Proteinases 
27
28
Resident lung microbiota Pneumocystis jirovecii Pneumonia serine protease
29
30
31
External surfacePhysical contact TrichophytonAthlete’s footFungusserine-protease
32
33
Wounds and abrasions
Minor skin abrasions
Bacillus anthracis
Cutaneous anthrax
Gram-positive bacteria
Immune Inhibitor A1 protease
34
Puncture wounds
Clostridium tetani
Tetanus
Gram-positive bacteria
Metalloendopeptidase
35
Handling infected animals
Francisella tularensis
Tularemia
Gram-negative bacterium
serine protease
36
37
Insect bites
Mosquito bites
FlavivirusYellow feverVirus flavivirus protease NS3
38
(Aedes aegypti)
39
Deer tick bites
Borrelia burgdorferi
Lyme disease
Bacterium (spirochete)
HtrA protease
40
Mosquito bites (Anopheles)
Plasmodium spp.
Malaria
Protozoan
Serine Proteases 
41
42
Skin penetrationSkin contact
Strongyloides stercoralis
strongyloidiasis parasiteSerine Proteases 
43
Streptococcus pyogenes
rheumatic fever, sepsis,
streptococcal dehydrogenase
44
severe soft-tissue invasion
Gram-positive bacteria
streptokinase
45
Yersinia pestis
plague
Gram-negetive bacteria
transmembrane proteases,
46
plasminogen activator protease
47
Borrelia burgdorferi
Lyme disease
spirochete
serine protease
48
49
Corneal penetration
Pseudomonas aeruginosa
Corneal Keratitis
Gram-negetive bacteria
metalloprotease, alkaline protease
50
Serratia marcescens
Corneal Keratitis
Gram-negetive bacteria
56-kilodalton (kDa) protease
51
52
Dental inflammation
Porphyromonas gingivalis
Peridontal Disease
Gram-negetive bacteria
cysteine proteinases
53
54
Intestinal dysentry
Entamoeba histolytica
amebic dysentery
 anaerobic parasitic protozoan
cysteine proteinases
55
56
Inactivation of Complement protein system
Streptococcus, Serratia,
multiple diseases
Gram-positive bacteria
Streptococcal C5a protease,
57
Inactivation of immunoglobulin g (IgG)
Pseudomonas, Entamoeba
multiple diseases
Gram-negetive bacteria
Candida acid protease, Entamoeba
58
histolytica, Porphyromonas
multiple diseases
fungus, amoeba
cysteine protease complement
59
Candida albicans
Candidiasis
protein - C3, immunoglobulin g (IgG)
60
IgA1 protease, Serratia
61
Marcescens 56K protease,
62
Candida protease
63
64
Cleavage of kininogen
Pseudomonas aeruginosa
multiple diseases
Gram-negetive bacteria
Elastase, Lys-gingivain
65
Porphyromonas gingivalis
Peridontal Disease
66
67
Depletion of protease inhibitor
Serratia, Pseudomonas,
multiple diseases
Elastase, Serratia 56K protease,
68
Candida, Aeromonas
fungus
Serine protease
69
Salmonicida
control gene expression
Gram-negetive bacteria
70
71
Bradykinin cascade activation
Serratia, Pseudomonas,
diarrheal disease, cholera
Gram-positive bacteria
Metalloproteases, aspartyl
72
Candida, Entamoeba
multiple diseases
Gram-negative bacterium
proteases, cysteine protease
73
histolytica,Vibrio cholerae
fungus
74
75
Plasmin-catalyzed plasmin generation
Streptococcus pyogenes,
fibrinolysis
Gram-positive bacteria
Streptokinase-activated
76
Staphylococcus aureus
autoproteolytic conversion
77
78
Plasminogen activator- catalyzed plasmin generation
Yersinia pestis
bloody diarrhea
Gram-negative bacterium
Microbial plasminogen activators
79
Escherichia coli
severe anemia,
Gram-negative bacterium
Microbial plasminogen activators
80
81
Activation of host matrix metalloproteinases(MMPs)
Porphyromonas gingivalis
Peridontal Disease
Gram-negetive bacteria
Microbial plasminogen activators
82
83
84
Proteases those activates microbial toxins
Bacillus anthracis,
Cutaneous anthrax
Gram-positive bacteria
Immune Inhibitor A1 protease
85
Pseudomonas aeruginosa
multiple diseases
Gram-negetive bacteria
Elastase, Lys-gingivain
86
87
Microbial toxin itself a protease
Clostridium botulinum
botulism
Gram-positive bacteria
Botulinus toxin, Tetanus toxin
88
Clostridium tetani 
Tetanus
Gram-positive bacteria
89
90
Diabetes
Matrix metalloproteinases [MMPs],
91
plasmin, and elastase
92
93
Hypertension
Aspartyl Protease Renin
94
95
Hepatitis C
Hepatitis C virus
Hepatitis C VirusNS3/4A
96
97
Alzheimer's disease
Memapsin
98
99
Rheumatoid arthritis and osteoarthritis
Cysteine,
100