Download Difference between T-phages and λ-phages

Difference between T-phages and λ-phages
1
Criteria
Virulence
T-phages
They are virulent phage virus
2
Reproductive Cycle
They are lytic cycle operators
3
Tail fibril
4
5
Sheath
Presence and activity
of repressor
6 long tail fibrils present at the tail
plate
Sheathed tail is present
λ-repressor protein is produced by the
activity of the cI gene
6
Prophage
development
Prophage development does not take
place at all
7
Help in transduction
8
9
Stability of the ghost
particle
Amount of proteins
10
Length of the life Cycle
Length of the life cycle is shorter
therefor the Eclipse phage is shorter in
length
11
Use as an agent
12
Mutation of the host
13
Image
Due to lack of the capacity to bind
with the host genome they are not
used in genetically engineering rather
they are used is page therapy
Doesn’t capable of mutant host
formation
Helps in generalized transduction of
bacteria
Attached with stability
The variety of viral proteins are much
higher in number
λ-phages
They are a-virulent or nonvirulent phage virus
They are lysogenic cycle
operators
Only 1 tail fibril present
Tail is unsheathed
λ-repressor is not produced
activity of the cro-proteins
restricts the λ-repressor
Prophage formation takes
place because of the sticky
end on the bacterial
genome
Helps in specialized
transduction of bacteria
Attached loosely
The viral proteins are
present here in lesser
amount in term of variety
Length of the life cycle is
greater and therefor the
length of the Eclipse period
is greater
Used as vector in gene
manipulation and other
scientific experiments
They are capable of
mutant host formation
Difference between TMV and Phage virus
1
2
3
Criteria
Virus Type
Nucleic acid
Reproduction
4
Transmission
5
Translocation
6
Parts
7
Disturbance of the host
cell cycle
8
Mutation of host
9
Amount of proteins
10
Own enzyme
11
12
Size
Image
TMV
Phage virus
Bacteriophage
dsDNA
Lytic or lysogenic cycle
operators
Microscopic transmission
Plant Virus
ssRNA
RNA dependent RNA
polymerization
Physical or vegetative
transmission
Cell to Cell plasmodesmatal
translocation is present
Only protein cote and nucleic acid
Slightly disturbed
Capacity to mutate the host is
absent
Varity of proteins are less in
number, only 4 types of proteins
are present
Doesn’t possess their own enzyme
300nm-17nm
No such translocation only
translocate to neighboring
cells in culture
Head, Collar, Tale, Tale
plate, Tale fibril, Spikes
Completely disturbed and
completely taken over by
the viral genome
They have capacity to
mutate the host
Thousands of proteins
present
Some members carry their
own enzymes
9.5nm-6.5nm
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