No, collagen is a Fibrous protein. An example would be insulin.
structural protein
Collagen is a long fibrous structural protein. A molecule of collagen contains three of the helical subunits coiled around each other in what is known as a coiled-coil. Hemoglobin on the other hand is a globular protein that contains a heme group. Four globular subunits make up hemoglobin and each contain an iron in order to hold the oxygen for transport.
There are two class of protein based on their structure namely fibrous and globular. Globular proteins form a globe like spherical structure in contrary to rod like fibrous proteins (collagen). They are soluble in water and the structure is rendered by its three dimensional arrangement of amino acids in solution. Most of the enzymes, soluble hormones and factors fall into this class of proteins.
Collagen is a protein yes. Protein is a broad category of molecules.
One example of a protein that is insoluble in water is collagen, which is a structural protein found in connective tissues such as skin, tendons, and bones. Collagen's insolubility in water is due to its triple helix structure and the presence of hydrophobic amino acid residues in its composition.
glubour
haemoglobin is considered as globular protein because it has ametabolic functions and considered as conjugated protein because it cosisted of protein and non protein moiety
Hemoglobin, Enzymes, Antibodies, Transporters in Membranes, Some Hormones (e.g. Insulin)
Tritiory proteins are globular proteins. Every enzyme is a globular proteins.
collagen fibers
fibrous
collagen is a form of protein