DNA and Protein Sequences for Analysis

The following DNA sequence contains a gene.

TCTTGAAATCCATTTTTAGCCCAACCAGATCATCCCGCGCGAAGTGCTCGAACGAGGCTT CGCACCCGTCCGGATTGGTCATCCGGTCCGGGATGGGGAACAAGATCATCAATGTTTGTC
CATGGAGGAAAACATGGCGTTTCGACCGCTTCATGATCGTATTCTCGTCCGCCGCGTCGA
GTCCGAAGAGAAGACCAAAGGCGGCATCATCATCCCCGACACTGCCAAGGAGAAGCCCCA
GGAAGGCGAAGTCCTCGCTGTAGGTCCCGGCGCGCGCGGCGAACAGGGTCAGATCCAGCC GCTCGACGTCAAGGTGGGCGACCGCATCCTGTTCGGCAAGTGGTCCGGCACCGAGATCAA GATCGACGGAGAAGATCTCCTGATCATGAAGGAAAGCGATGTCATGGGAATCATCGAGGC CCGGGCGCCGAGAAGATAGCCGCCTGATAACGCGAAGATACAGTCAACAAGCTGCCTATC

Here is a protein sequence.

MAQLSLQHIQKIYDNQVHVVKDFNLEIADKEFIVFVAASGCGKSTTLRMIAGLEEISGGDLLIDG
KRMNDVPAKARNIAMVFQNYALYPHMTVYDNMAFGLKMQKIAKEVIDERVNWAAQILGLREYL
KRKPGALSGGQRQRVALGRAIVREAGVFLMDEPLSNLDAKLRVQMRAEISKLHQKLNTTMIYV
THDQTEAMTMATRIVIMKDGIVQQVGAPKTVYNQPANMFVSGFIGSPAMNFIRGTIDGDKFVT
ETLKLTIPEEKLAVLKTQESLHKPIVMGIRPEDIHPDAQEENNISAKISVAELTGAEFMLYTTVG
GTS

The following four related proteins are presented in FASTA format.

>A protein  
MNIRPLHDRVIIKREEVETRSAGGIVLTGSAATKSTRAKVLAVGKGRILENGTVQPLDVKVGDVIF
NDGYGVKAEKIDGEEVLIISENDILAIVE 
 
>B protein  
MADIKFRPLHDRVVVRRVESEAKTAGGIIIPDTAKEKPQEGEVVAAGAGARDEAGKLVPLDVKAG
DRVLFGKWSGTEVKIGGEDLLIMKESDILGIVG 
 
>C protein  
MNIRPLHDRVIVKRKEVETKSAGGIVLTGSAAAKSTRGEVLAVGNGRILENGEVKPLDVKVGDIVI
FNDGYGVKSEKIDNEEVLIMSENDILAIVEA 
 
>D protein  
MKLRPLHDRVVIRRSEEETKTAGGIVLPGSAAEKPNRGEVVAVGTGRVLDNGEVRALAVKVGDK
VVFGPYSGSNAIKVDGEELLVMGESEILAVLED