Lysosomes are membrane-bound organelles found in eukaryotic cells that contain digestive enzymes. They were discovered in 1955 by Christian de Duve and function to digest materials through hydrolytic enzymes. Lysosomes are produced in the Golgi apparatus and contain around 40 varieties of hydrolase enzymes that function in an acidic environment. The main functions of lysosomes include digesting extracellular and intracellular material through processes like heterophagy, programmed cell death, autophagy, autolysis, and roles in fertilization and causing chromosomal damage.
- Definition of lysosome
- Structure of lysosome
- Discovery of lysosome
- Synthesis of primary and secondary lysosome
- Functions of lysosome
- 4 intracellular processes by lysosome – phagocytosis, exocytosis, endocytosis and autolysis
Introduction-Cell wall and functions
Gram +ve and -ve cell wall
Bacterial cell wall - structure
Peptidoglycan-Composition and Structure
Types of polysaccharidesBacterial cell wall
Functions of polysaccharides in Bacterial cell wall
its my university task to make a assignment on the brief history of molecular biology i am sure i done it quite well by linking all the information to molecular
The delivery of newly synthesized protein to their proper cellular destination, usually referred to as protein targeting or sorting.
The mode of protein transport depends chiefly on the location in the cell cytoplasm of the polysomes involved in protein synthesis.
There are two modes of protein sorting:-
1) Co - translational Transportation.
2) Post - translational Transportation.
This Presentation provides an outline knowledge about Cellular Communication, Steps involved, Its Types, Signal Transduction, Secondary Messenger , Receptors with some Interesting Facts and Current Trends. An assignment for the subject, Cellular and Molecular Pharmacology, 1st year M.Pharm, 1st semester.
Exocytosis is the process of moving materials from within a cell to the exterior of the cell. This process requires energy and is therefore a type of active transport. Exocytosis is an important process of plant and animal cells as it performs the opposite function of endocytosis. In endocytosis, substances that are external to a cell are brought into the cell.
In exocytosis, membrane-bound vesicles containing cellular molecules are transported to the cell membrane. The vesicles fuse with the cell membrane and expel their contents to the exterior of the cell. The process of exocytosis can be summarized in a few steps.
Vesicles containing molecules are transported from within the cell to the cell membrane.
The vesicle membrane attaches to the cell membrane.
Fusion of the vesicle membrane with the cell membrane releases the vesicle contents outside the cell.
There are three common pathways of exocytosis. One pathway, constitutive exocytosis, involves the regular secretion of molecules. This action is performed by all cells. Constitutive exocytosis functions to deliver membrane proteins and lipids to the cell's surface and to expel substances to the cell's exterior.
Regulated exocytosis relies on the presence of extracellular signals for the expulsion of materials within vesicles. Regulated exocytosis occurs commonly in secretory cells and not in all cell types. Secretory cells store products such as hormones, neurotransmitters, and digestive enzymes that are released only when triggered by extracellular signals. Secretory vesicles are not incorporated into the cell membrane but fuse only long enough to release their contents. Once the delivery has been made, the vesicles reform and return to the cytoplasm.
A third pathway for exocytosis in cells involves the fusion of vesicles with lysosomes. These organelles contain acid hydrolase enzymes that break down waste materials, microbes, and cellular debris. Lysosomes carry their digested material to the cell membrane where they fuse with the membrane and release their contents into the extracellular matrix.
Cell Communication, Cell Junction and Cell Signaling.pptxSheetal Patil
-Cellular Communication
-There are three stages of cell: communication
a.Reception
b.Transduction
c. Response
-Receptors And Ligands
There are two basic types of receptors:
a.Internal receptors
b.Cell surface receptors
-Internal receptors-often steroid hormones
-There are several different types of ligands
a.Hydrophobic ligands
b. Water soluble hydrophilic ligands
-Three stages of cell communication
-How insulin works
Cell Junction
-There are three types of cell junctions:
1.Adhesive (Anchoring) junctions
2.Tight Junctions
3.Gap Junactions
-The two main kinds of adhesive cell-cell junctions are:
a.Adherens junctions
b.Desmosomes
a. Adherens junctions:
Adherens junction is the cell to cell junction, which connects the actin filaments. In adherens junction, the membranes of the adjacent cells are held together by some transmembrane proteins called cadherins.
b. Desmosome
Desmosome is a cell to cell junction, where the intermediate filaments connect two adjacent cells. Desmosome is also called macula adherens. Desmosomes function like tight junctions. The trans-membrane proteins involved in desmosome are mainly cadherins.
2. Tight Junctions
The cell membranes are connected by strands of trans-membrane proteins such as claudins and occludins.
Tight junctions bind cells together, prevent molecules from passing in between the cells, and also help to maintain the polarity of cells.
-Functions of Tight Junctions:
Another function of tight junctions is simply to hold cells together.
3. Gap Junction
Gap junctions are a type of cell junction in which adjacent cells are connected through protein channels. Gap junctions are made up of connexin proteins. Groups of six connexins form a connexon, and two connexons are put together to form a channel that molecules can pass through. Other channels in gap junctions are made up of pannexin proteins.
-Functions of Gap Junction
The main function of gap junctions is to connect cells together so that molecules may pass from one cell to other.
This allows for cell-to-cell communication.
-Cell Signaling
Cell signaling is the process of cellular communication within the body. The binding of extracellular signaling molecules to their receptors
-Modes of cell-cell signaling
1.Direct cell-cell signaling
2. Signaling by secreted molecule
a.Endocrine signaling:
-E. g. hormones produced by endocrine glands including pituitary, pancreas, adrenal, parathyroid glands etc.
b.Paracrine signaling:
-E.g. action of neurotransmitters in carrying signals between nerve cells at a synapse.
c.Autocrine signaling:
-When interleukin-1 is produced in response to external stimuli, it can bind to cell-surface receptors on the same cell that produced it.
d.Synaptic signaling:
-Types of signaling molecules
a.Nitric oxide
b.Carbon monoxide
c.Neurotransmitter
d.Peptide hormone
-Intracellular signaling pathway activated by an extracellular signal molecule
Lysosome has been a cell organelle with lots of speculations. It was earlier believed to be involved in Cellular Suicide, hence termed as "Suicidal Bag". Recent research has however changed the entire functional concept of this organelle . It has now been found to have far more important functions with varied types .
- Definition of lysosome
- Structure of lysosome
- Discovery of lysosome
- Synthesis of primary and secondary lysosome
- Functions of lysosome
- 4 intracellular processes by lysosome – phagocytosis, exocytosis, endocytosis and autolysis
Introduction-Cell wall and functions
Gram +ve and -ve cell wall
Bacterial cell wall - structure
Peptidoglycan-Composition and Structure
Types of polysaccharidesBacterial cell wall
Functions of polysaccharides in Bacterial cell wall
its my university task to make a assignment on the brief history of molecular biology i am sure i done it quite well by linking all the information to molecular
The delivery of newly synthesized protein to their proper cellular destination, usually referred to as protein targeting or sorting.
The mode of protein transport depends chiefly on the location in the cell cytoplasm of the polysomes involved in protein synthesis.
There are two modes of protein sorting:-
1) Co - translational Transportation.
2) Post - translational Transportation.
This Presentation provides an outline knowledge about Cellular Communication, Steps involved, Its Types, Signal Transduction, Secondary Messenger , Receptors with some Interesting Facts and Current Trends. An assignment for the subject, Cellular and Molecular Pharmacology, 1st year M.Pharm, 1st semester.
Exocytosis is the process of moving materials from within a cell to the exterior of the cell. This process requires energy and is therefore a type of active transport. Exocytosis is an important process of plant and animal cells as it performs the opposite function of endocytosis. In endocytosis, substances that are external to a cell are brought into the cell.
In exocytosis, membrane-bound vesicles containing cellular molecules are transported to the cell membrane. The vesicles fuse with the cell membrane and expel their contents to the exterior of the cell. The process of exocytosis can be summarized in a few steps.
Vesicles containing molecules are transported from within the cell to the cell membrane.
The vesicle membrane attaches to the cell membrane.
Fusion of the vesicle membrane with the cell membrane releases the vesicle contents outside the cell.
There are three common pathways of exocytosis. One pathway, constitutive exocytosis, involves the regular secretion of molecules. This action is performed by all cells. Constitutive exocytosis functions to deliver membrane proteins and lipids to the cell's surface and to expel substances to the cell's exterior.
Regulated exocytosis relies on the presence of extracellular signals for the expulsion of materials within vesicles. Regulated exocytosis occurs commonly in secretory cells and not in all cell types. Secretory cells store products such as hormones, neurotransmitters, and digestive enzymes that are released only when triggered by extracellular signals. Secretory vesicles are not incorporated into the cell membrane but fuse only long enough to release their contents. Once the delivery has been made, the vesicles reform and return to the cytoplasm.
A third pathway for exocytosis in cells involves the fusion of vesicles with lysosomes. These organelles contain acid hydrolase enzymes that break down waste materials, microbes, and cellular debris. Lysosomes carry their digested material to the cell membrane where they fuse with the membrane and release their contents into the extracellular matrix.
Cell Communication, Cell Junction and Cell Signaling.pptxSheetal Patil
-Cellular Communication
-There are three stages of cell: communication
a.Reception
b.Transduction
c. Response
-Receptors And Ligands
There are two basic types of receptors:
a.Internal receptors
b.Cell surface receptors
-Internal receptors-often steroid hormones
-There are several different types of ligands
a.Hydrophobic ligands
b. Water soluble hydrophilic ligands
-Three stages of cell communication
-How insulin works
Cell Junction
-There are three types of cell junctions:
1.Adhesive (Anchoring) junctions
2.Tight Junctions
3.Gap Junactions
-The two main kinds of adhesive cell-cell junctions are:
a.Adherens junctions
b.Desmosomes
a. Adherens junctions:
Adherens junction is the cell to cell junction, which connects the actin filaments. In adherens junction, the membranes of the adjacent cells are held together by some transmembrane proteins called cadherins.
b. Desmosome
Desmosome is a cell to cell junction, where the intermediate filaments connect two adjacent cells. Desmosome is also called macula adherens. Desmosomes function like tight junctions. The trans-membrane proteins involved in desmosome are mainly cadherins.
2. Tight Junctions
The cell membranes are connected by strands of trans-membrane proteins such as claudins and occludins.
Tight junctions bind cells together, prevent molecules from passing in between the cells, and also help to maintain the polarity of cells.
-Functions of Tight Junctions:
Another function of tight junctions is simply to hold cells together.
3. Gap Junction
Gap junctions are a type of cell junction in which adjacent cells are connected through protein channels. Gap junctions are made up of connexin proteins. Groups of six connexins form a connexon, and two connexons are put together to form a channel that molecules can pass through. Other channels in gap junctions are made up of pannexin proteins.
-Functions of Gap Junction
The main function of gap junctions is to connect cells together so that molecules may pass from one cell to other.
This allows for cell-to-cell communication.
-Cell Signaling
Cell signaling is the process of cellular communication within the body. The binding of extracellular signaling molecules to their receptors
-Modes of cell-cell signaling
1.Direct cell-cell signaling
2. Signaling by secreted molecule
a.Endocrine signaling:
-E. g. hormones produced by endocrine glands including pituitary, pancreas, adrenal, parathyroid glands etc.
b.Paracrine signaling:
-E.g. action of neurotransmitters in carrying signals between nerve cells at a synapse.
c.Autocrine signaling:
-When interleukin-1 is produced in response to external stimuli, it can bind to cell-surface receptors on the same cell that produced it.
d.Synaptic signaling:
-Types of signaling molecules
a.Nitric oxide
b.Carbon monoxide
c.Neurotransmitter
d.Peptide hormone
-Intracellular signaling pathway activated by an extracellular signal molecule
Lysosome has been a cell organelle with lots of speculations. It was earlier believed to be involved in Cellular Suicide, hence termed as "Suicidal Bag". Recent research has however changed the entire functional concept of this organelle . It has now been found to have far more important functions with varied types .
Introduction
Structure of Plasma Membranes
Functions of Plasma Membranes
Cytoplasm: Cytosol, Organelles
Functions of Cytoplasm
Ribosome, Functions of Ribosomes
2. Endoplasmic reticulum (ER)
a. Rough Endoplasmic Reticulum and its Functions
b. Smooth ER and its Functions
3. Golgi complex and its Functions
4.Lysosomes and its Functions
5. Peroxisomes and its Functions
6. Proteasomes and its Functions
7.Mitochondria and its Functions
8. Cytoskeletal
a. Microfilaments and its Functions
b. Intermediate filaments and its Functions
c. Microtubules and its Functions
9. Centrosome and its Functions
10. Cilia and Flagella and its Functions
11. Nucleus and its Functions
a. Nuclear Membrane and its Functions
b. Nucleoplasm and its Functions
c. Chromosomes and its Functions
d. Nucleolus and its Functions
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2. Introduction
⚫It is a membrane bounded organelle, found in the
cytoplasm of eukaryotic cells, which contains
digestive enzymes
⚫They are found in animal cells, while in plant
cell the same roles are performed by the vacuole
3. Cont...
⚫Lysosomes
cytologist
were discovered by the Belgium
Christian de Duve in 1955, and named as
"suicide bags" or "suicide sacs“.
⚫They are most abundant in cells which are related with
the enzymatic reactions such as liver cells
pancreatic cells, kidney cells, spleen cells, leucocytes,
macrophages etc.
4. Structure of Lysosome
⚫Lysosomes are surrounded by a single membrane unique in
composition.
⚫The membrane contains highly glycosylated lysosomal
associated membrane proteins (LAMP) and lysosomal
integral membrane proteins (LIMP).
⚫That constitute about 50% of all lysosomal membrane
proteins (Winchester, 2001).
5. Cont...
⚫LAMPs and LIMPs form a coat on the
inner surface of the membrane, and are
thought to protect the membrane from
attack by the numerous hydrolytic
enzymes retained within lysosomes.
6. Cont...
⚫The lysosomal membrane also harbors a proton
pump that utilizes the energy from ATP
hydrolysis to pump H+ into the lumen, there by
creating the acidic pH characteristic of
lysosomes (Ohkuma and Poole, 1978)
7. Cont...
⚫The primary function of lysosomes is
degradation of extra and intra cellular material.
⚫For this purpose, lysosomes are filled with
hydrolases. Which may contain about 40 varieties
of enzymes. The lysosomal enzymes are
classified into six main types namely.
8. Cont...
⚫Proteases, which digest proteins.
⚫Lipase, which digests lipids.
⚫Amylase, which digest carbohydrates (e.g., sugars).
⚫Nucleases, which digest nucleic acids.
⚫phosphoric acid monoesters.
9. Cont...
⚫The lysosomal enzymes are collectively called
as hydrolases.
⚫The hydrolases cleavage of substrates by the
addition of a water molecules.
⚫Most of the lysosomal enzymes function in the
acid medium.
⚫Hence they are called as acid hydrolases.
11. Lysosome Production
⚫Lysosomes are manufactured and budded into the
cytoplasm by the Golgi apparatus with enzymes inside.
⚫The enzymes that are within the lysosome are made in the
rough endoplasmic reticulum, which are then delivered to
the Golgi apparatus via transport vesicles.
12.
13. TYPES
⚫Primary lysosome are small saclike structures enclosing
enzymes synthesized by the rough endoplasmic reticulum.
⚫Since they store enzymes, they are also said to be storage
granules.
⚫Secondary lysosome are formed by the fusion of primary
lysosome with phagosomes.
14. Cont...
⚫The Secondary lysosome contain engulfed materials
and enzymes. The materials are progressively digested
by the enzymes. So it is also called as
digestive vacuole.
16. Heterophagy
⚫Heterophagy is the lysosomal
extracellular materials by the
digestion of
process of
types
endocytosis. Heterophagy are of two
namely
Phagocytosis.
Pinocytosis.
17. Program cell death
⚫Given their high levels of hydrolytic enzymes, lysosomes
are potentially harmful to the cell.
⚫partial and selective lysosomal membrane
permeabilization (LMP) induces controlled cell death.
⚫LMP provokes the translocation of lysosomal contents to
the cytoplasm.
18. Cont...
⚫The proteases implicated in cell
death are
cathepsins that remain
active at neutral pH, such as
cathepsin B, CD, and cathepsin L
⚫These proteases trigger and cascade the
essential organelle of cell, which led to cell
death.
19. Autophagy
⚫ Autophagy is a normal physiological process
in the body that deals with destruction of cells
in the body.
⚫It maintains homeostasis or normal functioning
by protein degradation and turnover of the
destroyed cell organelles for new cell
formation.
20. Autolysis
⚫Autolysis refers to the digestion of own cells by the
lysosomes.
⚫In autolysis, the lysosome digests its own cell
⚫Autolysis occurs during amphibian metamorphosis, and
insect metamorphosis etc.
21.
22. Fertilization
⚫During fertilization process, acrosome (giant lysosome) of
sperm head ruptures and releases enzymes on the surface
of the egg.
⚫These enzymes digest the egg membrane and provide way
for the entry of sperm nucleus into the egg.
23.
24. Chromosomal damage
⚫Due to the presence of DNase enzyme, lysosome had an
ability to attacks chromosome and cause chromosomal
breakages. These breakages can leads to diseases like
cancer etc.
25. References
⚫Lockshin RA, Zakeri Z (2004)Apoptosis, autophagy, and
more. Int J Biochem Cell Biol 36: 2405-19.
⚫http://www.jbc.org/content/early/2014/12/05/jbc.M114.608471.
full.html#ref-list-1.
⚫Eskelinen EL (2006) Roles of LAMP-1 and LAMP-2 in
lysosome biogenesis and autophagy. MolAspects Med 27:
495-502.
⚫De Duve C, Wattiaux R (1966) Functions of lysosomes.Annu
Rev Physiol 28: 435-92.