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Contributes toGO:0009253peptidoglycan catabolic processPMID:18348984IDA: Inferred from Direct Assay P
This annotation made on page: BPT5:TMP
By: HPaudel (group Team Green B 2018) on 2018-04-01 17:35:18 CDT.




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Entry TypeChallenging User,GroupTime/DateChallenge ReasonPoints/Assessment
ChallengeORichter,
Team Purple B 2018
2018-04-03 11:55:25 CDT

The description of the evidence is not clearly specified, in fact, HPLC is never mentioned as the method of detection. My correction is below:

Beta-galactosidase released through ONPG hydrolysis in Pb2-Cterm-treated E.coli bacteria versus sonicated cells is measured in Figure 6. Figure 6 shows that ONPG hydrolysis proceeds fastest with the sonicated cells compared to the E. coli. It took 50 minutes for the E. coli treated with Pb2-Cterm to reach 60% of the beta-galactosidase released from sonicated bacteria. DDM did not induce the expression of beta-galactosidase upon its addition. Triggering beta-galactosidase expression, therefore, had to be due to a type of peptidoglycan hydrolase activity that was induced by the Pb2-Cterm, which would span both the membrane and the peptidoglycan. The Pb2-Cterm incubated peptidoglycan (Figure 7.a) showed significantly more expression on the HPLC compared to the non-Pb2-Cterm-incubated peptidoglycan HPLC (Figure 7.b).

The peptidoglycan hydrolase activity is a peptidoglycan catabolic process so this is accurate.

1
ChallengeHPatel,
Team Blue B 2018
2018-04-03 08:26:29 CDT

I would elaborate your note a little bit more in terms of proving peptidoglycan degradation through the HPLC. The profile was different when Pb2-Cterm was first added and then the mutanolysin. Also, mentioning the 3 major species from the peptidoglycan digestion would make the argument stronger.

1
ChallengeTBurnett,
Team Blue A 2018
2018-04-02 17:04:18 CDT

Peptidoglycan catabolic process is a biological process. It would be more fitting to find a GO Term for molecular function pertaining to the breakdown of peptidoglycan. It may also be useful to state that this was validated through HPLC.

1
Public
Assessment
Ivanerill2018-05-02 09:18:47 CDTNo notes given.Acceptable
Protein
Publication
Qualifier
Go term
Evidence
With/From
Notes
Unique/Original
Public
Assessment
DanielRenfro2018-04-30 09:45:49 CDT

This annotation has been flagged because it has been edited since last assessment

Qualifier GO ID GO term name Reference Evidence Code with/from Aspect Notes Status
GO:0061783 peptidoglycan muralytic activity PMID:18348984 IDA: Inferred from Direct Assay F According to the paper the protein specifically the C terminus end is involved in the degradation of peptidoglycan . The protein has peptidoglycan hydrolase activity. When mixed with peptidoglycan it was shown to give products and degrade peptidoglycan using it as a substrate. Figure six shows the hydrolytic capability of the protein by comparing it to sonicated ( sonication is a method used to disrupt cell membranes) cells. With the PB2-Cterm we can see that the B galactosidase coming out from the bacteria reached a level 60 percent to that of sonicated cells. Which is further proof of peptidoglycan hyrolysis. The control designed for this part was only adding DDM which didn't end up causing any B galactosidase to come out of the bacteria. complete
CACAO 13184
on BPT5:TMP
Flagged
Public
Assessment
Ivanerill2018-04-30 09:44:34 CDT

The “contributes to” qualifier is used to capture the molecular function of complexes when the activity is distributed over several subunits. I don't see evidence of this here.

Requires Changes
Protein
Publication
Qualifier
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Evidence
With/From
Notes
Private
Assessment
Ivanerill2018-04-30 06:08:51 CDTYou need to be an instructor to view these notes.Requires Changes
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Evidence
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DanielRenfro2018-04-18 10:18:18 CDT

This annotation has been flagged because it has been edited since last assessment

Qualifier GO ID GO term name Reference Evidence Code with/from Aspect Notes Status
Contributes to GO:0061783 peptidoglycan muralytic activity PMID:18348984 IDA: Inferred from Direct Assay F According to the paper the protein specifically the C terminus end is involved in the degradation of peptidoglycan . The protein has peptidoglycan hydrolase activity. When mixed with peptidoglycan it was shown to give products and degrade peptidoglycan using it as a substrate. Figure six shows the hydrolytic capability of the protein by comparing it to sonicated ( sonication is a method used to disrupt cell membranes) cells. With the PB2-Cterm we can see that the B galactosidase coming out from the bacteria reached a level 60 percent to that of sonicated cells. Which is further proof of peptidoglycan hyrolysis. The control designed for this part was only adding DDM which didn't end up causing any B galactosidase to come out of the bacteria. complete
CACAO 13184
on BPT5:TMP
Flagged
Public
Assessment
DanielRenfro2018-04-15 19:31:56 CDT

This annotation has been flagged because it has been edited since last assessment

Qualifier GO ID GO term name Reference Evidence Code with/from Aspect Notes Status
Contributes to GO:0009253 peptidoglycan catabolic process PMID:18348984 IDA: Inferred from Direct Assay P According to the paper the protein specifically the C terminus end is involved in the degradation of peptidoglycan . The protein has peptidoglycan hydrolase activity. When mixed with peptidoglycan it was shown to give products and degrade peptidoglycan using it as a substrate. Figure six shows the hydrolytic capability of the protein by comparing it to sonicated ( sonication is a method used to disrupt cell membranes) cells. With the PB2-Cterm we can see that the B galactosidase coming out from the bacteria reached a level 60 percent to that of sonicated cells. Which is further proof of peptidoglycan hyrolysis. The control designed for this part was only adding DDM which didn't end up causing any B galactosidase to come out of the bacteria. complete
CACAO 13184
on BPT5:TMP
Flagged
Public
Assessment
Ivanerill2018-04-14 20:10:57 CDT

Comments can be more specific on the methodology used and the overall description of the experiment. This is showing evidence of molecular function, not a biological process (since it is in vitro). You can find a term a molecular function term that appropriately reflects this (even though probably not as specific).

Requires Changes
Protein
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Qualifier
Go term
Evidence
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Notes
Unique/Original