$3.$ Homology modeling project using the human GLP$-2$ receptor.a$.$ Using the ExPASy server, locate the primary sequence for the human GLP$-2$ receptor. Save the sequence as a FASTA file for later use.b$.$ Next, using YASARA build a $3$D structural model $($tertiary structural model$)$ for human GLP$-2.$c$.$ After the modeling project is completed, download the predicted structure as a PDB file and answer the following questions.d$.$ Which template structure$($s$)$ was used in the modeling project?e$.$ What is the crystallographic resolution of the template structure$($s$)?$f$.$ What is the sequence identity between the template structure$($s$)$ and the target structure?g$.$ Based on the above answers, do you think your predicted model$($s$)$ is trustworthy?h$.$ What does model quality evaluation refer to$?$i$.$ Name and briefly describe three YASARA methods for model quality evaluation.j$.$ Does the YASARA Model Quality analysis suggest that you have at least one good human GLP$-2$ model?$4.$ Write a YASARA Macro script that performs the following operations:$1.$Open $20$ PDB files in YASARA $($use the $4$ieh$\_$xxx$.$pdb files from the module $6$ crash course in writing macro scripts$)2.$Use the Align$/$Mustang command to superimpose $19$ of the structures $(4$ieh$\_001.$pdb to $4$ieh$\_019.$pdb$)$ onto the reference structure $(4$ieh$\_000.$pdb$)3.$Print the names of the proteins $($column $1)$ and RMSDs $($column $2)$ to a text file that gets saved in your home directory $($the same directory where your $20$ PDN structures are saved$)$Hint: you can modify the superpose$\_$ligand.mcr file that I uploaded to Module $6.$Write your script in the space provided below.