Etiketter

onsdag 22 januari 2020

Serralysiiniperhe (ihmisvihollisia), Virulenssiproteiinisetti

https://www.researchgate.net/figure/Phylogenetic-linkage-of-ZapA-to-the-serralysin-family-of-zinc-metalloproteases-Analysis_fig2_15607465
 Phylogenetic linkage of ZapA to the serralysin family of zinc metalloproteases. Analysis of the deduced amino acid sequence of ZapA indicates the presence of several signature peptide motifs that are held in common with many other homologous metalloproteases belonging to the serralysin family of metalloproteases, including the proteases of S. marcescens, E. chrysanthemi, P. aeruginosa, and (from this research) P. mirabilis. The serralysin family has the zinc metalloprotease domain, the Met turn of metzincins, and three or more Ca 2 binding motifs, and all are exported by a COOH terminal secretory signal. The serralysin family of zinc metalloproteases is in turn part of a larger set of proteins thought to function as virulence factors in several genera of bacteria. This set of virulence proteins includes Actinobacillus (Haemophilus) pleuropneumoniae hemolysin protein, AppA (18), Actinobacillus suis AppA (17), Pasteurella haemolytica LktA leukotoxin (20), enterohemorrhagic E. coli HlyA hemolysin (33), Actinobacillus actinomycetemcomitans LktA leukotoxin (40, 41), Bordetella pertussis adenylate cyclase CyaA (16), N. meningitidis Fe-regulated RTX cytotoxin homolog (FrpA) (64), and Pseudomonas fluorescens lipase LipA (27, 63). All of these proteins have the common feature of the Ca 2 binding GGXGXD repeat motif among other characteristics. The phylogenetic linkage map was established from nucleotide and amino acid sequences stored in the GenBank, EMBL, and Pir libraries and was analyzed with the Genetics Computer Group program PILEUP. 

Phylogenetic linkage of ZapA to the serralysin family of zinc metalloproteases. Analysis of the deduced amino acid sequence of ZapA indicates the presence of several signature peptide motifs that are held in common with many other homologous metalloproteases belonging to the serralysin family of metalloproteases, including the proteases of S. marcescens, E. chrysanthemi, P. aeruginosa, and (from this research) P. mirabilis. 

The serralysin family has the zinc metalloprotease domain, the Met turn of metzincins, and three or more Ca 2 binding motifs, and all are exported by a COOH terminal secretory signal. The serralysin family of zinc metalloproteases is in turn part of a larger set of proteins thought to function as virulence factors in several genera of bacteria. 

This set of virulence proteins includes
 Actinobacillus (Haemophilus) pleuropneumoniae hemolysin protein, AppA (18), 
Actinobacillus suis AppA (17), 
Pasteurella haemolytica LktA leukotoxin (20),
 enterohemorrhagic E. coli HlyA hemolysin (33), 
Actinobacillus actinomycetemcomitans LktA leukotoxin (40, 41),
 Bordetella pertussis adenylate cyclase CyaA (16), 
N. meningitidis Fe-regulated RTX cytotoxin homolog (FrpA) (64),
 and Pseudomonas fluorescens lipase LipA (27, 63).

 All of these proteins have the common feature of the Ca 2 binding GGXGXD repeat motif among other characteristics. 

The phylogenetic linkage map was established from nucleotide and amino acid sequences stored in the GenBank, EMBL, and Pir libraries and was analyzed with the Genetics Computer Group program PILEUP.

....
 . One of these factors, ZapA metalloprotease, is of distinctive significance. It is an IgA-degrading protease that is specifically expressed during differentiation of swimmer into swarmer cells ( Wassif et al., 1995). Now-a-days due to increasing antibiotic resistance in Enterobacteriaceae, the multidrug resistant (MDR) strains of Proteus species have also been reported worldwide. ...

Serralysiinin kaltaisten  metalloproteaasien C-terminaalin piirteitä: 

https://www.ebi.ac.uk/interpro/entry/InterPro/IPR011049/

serralysin MeSH Supplementary Concept Data 2020

MeSH Supplementary
serralysin
Unique ID
C095666
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/C095666
Registry Number
EC 3.4.24.40
Heading Mapped to
*Metalloendopeptidases
Frequency
47
Note
zinc metalloproteinases with broad similar specificity for cleavage of the oxidized insulin B chain
Source
Methods Enzymol 1995;248:395-413
Date of Entry
1995/10/17
Revision Date
2004/08/06

 

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