Myoglobin
Myoglobin - Related Videos
11:48
Development of a Colloidal Gold-based Immunochromatographic Test Strip for Detection of Cetacean Myoglobin
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Cited by 5 •
2016
This protocol describes the development of two IgG class monoclonal antibodies (mAbs) strongly reactive to myoglobin of cetaceans. These mAbs are applied on a colloidal gold immunochromatographic test strip based on the sandwich format to differentiate the Mb of cetaceans from seal and other animals.
11:14
Mass Spectrometric Approaches to Study Protein Structure and Interactions in Lyophilized Powders
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Cited by 19 •
2015
Here, we present detailed protocols for solid-state amide hydrogen/deuterium exchange mass spectrometry (ssHDX-MS) and solid-state photolytic labeling mass spectrometry (ssPL-MS) for proteins in solid powders. The methods provide high-resolution information on protein conformation and interactions in the amorphous solid-state, which may be useful in formulation design.
08:51
The Use of Thermal Infra-Red Imaging to Detect Delayed Onset Muscle Soreness
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Cited by 110 •
2012
The purpose of this investigation was to assess whether using an infra-red thermal camera is a valid tool for detecting and quantifying the muscle soreness after exercising.
02:47
Protein Families
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2020
Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism. Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members. If these new proteins contain similar amino acids in key locations, protein...
01:48
Classification of Skeletal Muscle Fibers
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2019
Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions. Slow-Twitch Muscle Fibers Slow oxidative, muscle fibers appear red due to large numbers of capillaries and high levels of...
FAQs
Reversible binding allows myoglobin to alternate between oxygen-loaded and oxygen-released states rather than holding oxygen permanently. When muscle cells have sufficient oxygen, the protein can retain it; when cellular oxygen levels decline, it can release the stored oxygen. This buffering role helps support aerobic energy production during sustained or intense contraction.
The heme group provides the iron-containing component that reversibly binds oxygen. This association gives myoglobin its capacity to retain oxygen within muscle tissue while still permitting release when oxygen availability falls. Because the heme group is central to binding, it links the protein’s molecular structure to its role in supporting muscle metabolism.
Sustained or intense contraction can be associated with declining oxygen levels inside muscle cells. Under those conditions, myoglobin can release oxygen that it has retained, helping maintain the supply available for aerobic energy production. The mechanism is therefore relevant to both the timing of oxygen availability and the ability of active muscle tissue to continue functioning.
Myoglobin is abundant in both cardiac muscle and skeletal muscle, the tissues that perform continuous or voluntary contraction, respectively. Its presence contributes to the characteristic red color of these muscles. This visible feature connects the protein’s distribution with muscle biology, while its oxygen-related role links tissue appearance to oxygen storage and use.
Measurements of myoglobin in blood or urine can help indicate that muscle injury has occurred. These tests provide a biological signal associated with damage to muscle tissue, but the overview does not specify a particular testing protocol or interpretation threshold. Their value lies in using a measurable protein marker to support investigation of muscle injury.
Comparative studies examine myoglobin structure and oxygen-binding behavior to investigate how the protein has changed across biological contexts and how those changes relate to muscle physiology. Structural comparisons address the protein itself, whereas oxygen-binding comparisons focus on function. Together, these approaches provide evidence for studying protein evolution and the relationship between molecular properties and tissue demands.