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Spermatogenesis01:41

Spermatogenesis

90.4K
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim of seminiferous tubules. These spermatogonial stem cells divide asymmetrically to give rise to additional stem cells (meaning that these structures “self-renew”), as well as sperm progenitors, called spermatocytes. Importantly, this method of asymmetric mitotic division maintains a population of spermatogonial stem cells in the male...
90.4K
Spermatogenesis01:22

Spermatogenesis

8.1K
Spermatogenesis is a complex process that involves the development of sperm cells from undifferentiated stem cells in the seminiferous tubules of the testes. The process is essential for the production of mature and functional sperm cells that are capable of fertilizing an egg.
The process of spermatogenesis can be divided into mitosis, meiosis, and spermiogenesis. During mitosis, the spermatogonia or stem cells divide to produce two identical daughter cells, type A and B spermatogonia. Type-A...
8.1K
Phase II Reactions: Acetylation Reactions01:24

Phase II Reactions: Acetylation Reactions

1.1K
Acetylation, a phase II biotransformation reaction, introduces an acetyl group to drugs or their metabolites. Acetyltransferase enzymes facilitate this reaction, which resembles α-amino acid conjugation due to the addition of a functional group to the drug molecule.
The substrates for acetylation are typically drugs or their metabolites with an amino, sulfonamide, or hydrazine functional group. Acetylation can occur at several points in the drug molecule, including primary, secondary, and...
1.1K
Histone Modification02:32

Histone Modification

14.3K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
14.3K
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

8.2K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
8.2K
Spreading of Chromatin Modifications02:25

Spreading of Chromatin Modifications

8.0K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
8.0K

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Related Experiment Video

Updated: Apr 21, 2026

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
09:40

A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model

Published on: February 6, 2018

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Protein acetylation and spermatogenesis.

Aly Pang1, Om Rennert1

  • 1Laboratory of Clinical and Developmental Genomics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.

Reproductive System & Sexual Disorders : Current Research
|October 22, 2014
PubMed
Summary
This summary is machine-generated.

Protein acetylation is crucial for mammalian spermatogenesis, regulating gene expression and protein function during male germ cell development. This review highlights key acetylation events essential for proper sperm formation.

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Area of Science:

  • Reproductive Biology
  • Molecular Endocrinology
  • Cellular Biology

Background:

  • Spermatogenesis is the complex process of male germ cell development from stem cells to spermatozoa.
  • Gene expression, protein levels, and cellular morphology undergo significant changes during germ cell maturation.
  • Post-translational modifications, such as protein acetylation, are vital regulators of protein function and localization.

Purpose of the Study:

  • To provide an updated overview of protein acetylation's role in mammalian spermatogenesis.
  • To illustrate how acetylation impacts critical events in male germ cell development.
  • To highlight recent findings on acetylation's regulatory functions.

Main Methods:

  • Literature review of current research on protein acetylation and spermatogenesis.
  • Analysis of specific examples demonstrating acetylation's involvement in germ cell development.
  • Synthesis of findings to illustrate regulatory mechanisms.

Main Results:

  • Protein acetylation influences various stages of spermatogenesis.
  • Specific acetylation events are critical for regulating gene expression and protein activity in germ cells.
  • Acetylation controls key cellular processes essential for sperm formation and function.

Conclusions:

  • Protein acetylation is a key post-translational modification essential for successful mammalian spermatogenesis.
  • Understanding acetylation's role provides insights into male fertility and potential therapeutic targets.
  • Further research is needed to fully elucidate the complex mechanisms of acetylation in germ cell development.