The nucleolus is an important part of the core. The strands of RNA, DNA and form of various structural parts of this component of the cell. It consists of granular and fibrillar elements. The components are classified in the fibrillar centers and dense fibrillar component fibrils. This type of structural organization of the nucleolus of eukaryotic cells.
The nucleolus is an important part of the core. The strands of RNA, DNA and form of various structural parts of this component of the cell. It consists of granular and fibrillar elements. The components are classified in the fibrillar centers and dense fibrillar component fibrils. This type of structural organization of the nucleolus of eukaryotic cells. Nucleolar vacuoles are the specialty plant cells. Nucleolus in this nascent form of yeast is higher than in other cells, and covers almost half of the nuclei. Present at the nuclear matrix, nucleolus is not surrounded by a membrane. The main components of the nucleolus is ribonucleic acid (RNA), deoxyribonucleic acid (DNA) and proteins. The nucleolar function and structure can be understood using the information below.
The complex organization is seen in nucleoli was developed during the phase transition in anamniotes amniotes. The anamniotes are vertebrates that lack of amnion and to lay their eggs in water. Organizations are amniotes (reptiles, birds, etc.) that lays eggs that are adapted to terrestrial environments. In this transitional phase, the rDNA intergenic region have seen a significant increase. Separation of origin fibrillar component was performed in this phase and FC (fibrillar centers) & PLC (dense fibrillar component) were trained.
What is the function of nucleolus?
The main function of the nucleolus is the production of subunits that make up the ribosome. Ribosomes are known to produce / make proteins and thus the nucleolus plays an indirect role in protein synthesis. Total RNA occurs in cells, the nucleolus involved in 50% of RNA synthesis. This feature nucleolus caused hundreds of R-genes.
Ribosomal subunit assembly
The assembly of ribosomal subunits is as follows. Transcription of the rRNA precursor molecule of DNA occurs in the nucleolus. The major rRNA precursor molecule is processed to three mature RNA is formed. The next step after the formation of mature RNA is to carry package. These RNAs include specific forms of proteins, and finally, the ribosomal units formed. These units vary in size ribosomal. Learn more about the transcription of DNA.
Translation process requires ribosomal subunits as a raw material. Subunits of ribosomes, which are mounted is transported to the cytoplasm of the cell, ie outside the nucleolus and then participate in the process of translation (protein synthesis).
The nucleolus is known to play an important role in the biogenesis of mRNA. The nucleolus is also involved in RNA metabolism. Events such as telomerase RNP assembly of the signal recognition particle is known to be important. Nucleolus is also involved in these events RNP Assembly.
Nucleolus Organizer Region
NI is the region where the formation of the nucleolus takes place around the chromosomes. After the division of the nucleus, this region associated with the core. More copies of ribosomal RNA genes are found in this area.
The various functions of the nucleolus is explained in the preceding article. Structure and function of the nucleolus is much more complicated than it has been studied until now. Efforts are underway to study the function of the nucleoli at the molecular level. It would be useful to better understand the macromolecules involved in different functions. The above article, therefore, provides a brief overview of the nucleolus of different functions.