User talk:Eequor/Reference/Protein
Most abundant proteins in an animal?
[edit]There are many, many different types of protein in an individual animal, but there are more copies of some proteins than others. Supposedly, collagen is the most abundant protein in mammals. I need to know which are the other most abundant proteins... ike9898 19:07, Aug 12, 2004 (UTC)
- actin is found in all animal cells, forming the cytoskeleton. It is used in cell movements, cell division, and, in combination with myosin, causes the contraction of muscles.
- collagen forms connective tissue - it holds everything together. Collagen gives skin, ligaments, and tendons their strength and resilience. It also gives flexibility to bone.
- elastin gives skin its elasticity.
- ganoin is found in ganoid fish scales.
- hemoglobin transports oxygen.
- keratin forms hair, fur, toenails, fingernails, tooth enamel, feathers, baleen, scales, hooves, claws, and horns (but not antlers, which are bone).
- myelin is found in glial cells. It is an electrically insulating protein which improves the transmission of nerve impulses through axons.
- myoglobin is found in type I muscle (red muscle), allowing the muscle to store its own oxygen for lengthy exertions (when there would otherwise be insufficient oxygen provided by the lungs).
- --Eequor 20:11, 12 Aug 2004 (UTC)