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A protein's lifespan is measured in terms of its half-life and covers a wide range. They can exist for minutes or years with an average lifespan of 1–2 days in mammalian cells. Abnormal or misfolded proteins are degraded more rapidly either due to being targeted for destruction or due to being unstable.
The N-end rule is a rule that governs the rate of protein degradation through recognition of the N-terminal residue of proteins. The rule states that the N -terminal amino acid of a protein determines its half-life (time after which half of the total amount of a given polypeptide is degraded). The rule applies to both eukaryotic and prokaryotic ...
protein families database of alignments and HMMs Protein sequence databases Human Proteinpedia: Institute of Bioinformatics (IOB), Bangalore and Johns Hopkins University, The human Proteinpedia is based on HPRD (Human protein reference database)which is a repository hosting over 30,000 human proteins. However it is unclear how many of these are ...
Protein half-life helps determine the overall rate as this designates the first step in protein catabolism. Depending on whether this step is short or long will influence the rest of the metabolic process. One key component in determining the protein half-life is based on the N-end rule. This states that the amino acid present at the N-terminus ...
Human Protein Reference Database. The Human Protein Reference Database (HPRD) is a protein database accessible through the Internet. [1] It is closely associated with the premier Indian Non-Profit research organisation Institute of Bioinformatics (IOB), Bangalore, India. This database is a collaborative output of IOB and the Pandey Lab of Johns ...
The Protein Data Bank (PDB) [1] is a database for the three-dimensional structural data of large biological molecules such as proteins and nucleic acids, which is overseen by the Worldwide Protein Data Bank (wwPDB). These structural data are obtained and deposited by biologists and biochemists worldwide through the use of experimental ...
In cell biology, protein turnover refers to the replacement of older proteins as they are broken down within the cell. Different types of proteins have very different turnover rates. A balance between protein synthesis and protein degradation is required for good health and normal protein metabolism. More synthesis than breakdown indicates an ...
The Worldwide Protein Data Bank, wwPDB, is an organization that maintains the archive of macromolecular structure. Its mission is to maintain a single Protein Data Bank Archive of macromolecular structural data that is freely and publicly available to the global community. [ 1][ 2] The organization has five members: [ 3] Research Collaboratory ...