Cryptosporidium parvum ubiquitin activating enzyme E1:(GI:66356872)

Cryptosporidium parvum
ubiquitin activating enzyme E1:(GI:66356872)
Cryptosporidium parvum ubiquitin activating enzyme E1:(GI:66356872)
1- why is this protein important?
2- some background about this protein?
3- Discuss the secondary structures that may be present within the model
4- Why I chose this particular template/alignment
5- Why my 3D structure has some validity?
The answer must include the references.
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