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What is maltose permease?
Maltose permease is a protein found in bacteria that plays a role in facilitating the transport of maltose into the bacterial cell. It is a type of permease, which is a membrane protein that helps transport specific molecules across the cell membrane. This protein is essential for the uptake of maltose as a carbon source for bacteria.
What are the results for klebsiella pneumoniae in the citrate utilization test?
Klebsiella pneumoniae is typically citrate negative, meaning it does not utilize citrate as a carbon source in the citrate utilization test. This bacterium lacks the enzyme citrate permease needed for citrate utilization.
Does serratia test negative for citrate?
Yes, Serratia marcescens typically tests negative for citrate utilization in citrate utilization tests. This bacterium lacks the enzyme citrate-permease needed to import citrate into the cell, resulting in a negative citrate test.
What type of transport is used to move lactose into the cell?
Lactose is transported into the cell through a specific type of transporter called a lactose permease, which is a membrane protein that facilitates the movement of lactose molecules across the cell membrane. This process is active transport, requiring energy in the form of ATP to drive the movement of lactose against its concentration gradient into the cell.
Does pseudomonas aeruginosa have a positive result for citrate utilization?
No, Pseudomonas aeruginosa typically gives a negative result for citrate utilization in biochemical tests. This bacterium usually does not possess the citrate-permease enzyme needed for citrate utilization.
What is a sentence with the word permease in it?
The carrier protein for the facilitated transport of glucose is called a permease.
What is maltose permease?
Maltose permease is a protein found in bacteria that plays a role in facilitating the transport of maltose into the bacterial cell. It is a type of permease, which is a membrane protein that helps transport specific molecules across the cell membrane. This protein is essential for the uptake of maltose as a carbon source for bacteria.
What does citrate permease do?
Citrate Permease is an enzyme that is responsible for transporting citrate inside the cell. Some bacteria have this enzyme while others do not. You can test for the presence of citrate permease by performing a Simmon's Citrate biochemical test.
What proteins are produced by the three structural genes in the lac operon?
The three structural genes in the lac operon produce proteins called beta-galactosidase, permease, and transacetylase.
Why cant the ONPG test be substituted for the determination of lactose fermentation?
ONPG test detects only presence of beta galactosidase enzyme whereas lactose fermentation requires the presence of permease as well as beta galactosidase enzyme.
What are the results for klebsiella pneumoniae in the citrate utilization test?
Klebsiella pneumoniae is typically citrate negative, meaning it does not utilize citrate as a carbon source in the citrate utilization test. This bacterium lacks the enzyme citrate permease needed for citrate utilization.
Genes that are turned on or off by the presence of lactose?
lacZ codes for the enzyme beta-galactosidase, which splits lactose into glucose plus galactose. lacY codes for a "permease" protein that allows lactose to enter the cell, and lacA codes for an enzyme that acetylates lactose.
Can shigella sonnei be a lactose non fermenter My tests are as followed TSI KA Methyl red VP - citrate - urea - NO3 degraded to NO2 H2S - motility -. all points to shigella but it's nonferm?
S.sonnei is not a true lactose fermenting bacteria (see.. http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=271578&blobtype=pdf)But is a delayed lactose fermenter as it does not have the enzyme permease to transport lactose through its cell wall.However an ONPG lactose fermenting test does not require permease to allow the bacterium to ferment lactose so in an ONPG test the shigella sonnei will appear as lactose fermenting positive.Hope this helps!!2nd year BMS student
Does serratia test negative for citrate?
Yes, Serratia marcescens typically tests negative for citrate utilization in citrate utilization tests. This bacterium lacks the enzyme citrate-permease needed to import citrate into the cell, resulting in a negative citrate test.
What type of transport is used to move lactose into the cell?
Lactose is transported into the cell through a specific type of transporter called a lactose permease, which is a membrane protein that facilitates the movement of lactose molecules across the cell membrane. This process is active transport, requiring energy in the form of ATP to drive the movement of lactose against its concentration gradient into the cell.
Does pseudomonas aeruginosa have a positive result for citrate utilization?
No, Pseudomonas aeruginosa typically gives a negative result for citrate utilization in biochemical tests. This bacterium usually does not possess the citrate-permease enzyme needed for citrate utilization.
What are some eight letter words with 2nd letter E and 5th letter E and 6th letter A and 7th letter S?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -E--EAS-. That is, eight letter words with 2nd letter E and 5th letter E and 6th letter A and 7th letter S. In alphabetical order, they are: decrease degrease permease
