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Table 3 HIV-1 RT Amino Acid Residues Defining the Nonnucleoside Inhibitor-Binding Pocket (NNIBP) and the<br />

Locations of NNRTI-Resistance Mutations (see also [12])<br />

NNIBP<br />

Residues<br />

Pro95 β5<br />

Location Mutation Possible Effects References<br />

Ala98 β5–β6 Gly less bulky 9,164<br />

Leu100 β5–β6 Ile β-branch 9,164-166<br />

Lys101 β5–β6 Glu charge change 164<br />

Lys103 β5–β6 Asn, Gln charge loss, less bulky 9,24,164<br />

Val106 β6 Ala less bulky 9,58,165<br />

Val108 β6 Ile bulkier 9,164<br />

Glu138 β7–β8(p51) Lys charge change 166<br />

Val179 β9 Glu, Asp charge gain, bulkier 164<br />

Tyr181 β9 Cys, Ile aromaticity loss, less bulky 24,58,164<br />

Tyr188 β10 His, Cys, Leu aromaticity loss, less bulky 9,167<br />

Gly190 β10 Glu charge gain, bulkier 9,22,168<br />

Phe227 β12<br />

Leu228 β12 Phe aromaticity gain, bulkier 133<br />

Trp229 β12<br />

Glu233 β13 Val charge loss, less bulky 169<br />

Leu234 β13<br />

Pro236 β13–β14 Leu increase flexibility, bulkier 133<br />

Lys238 β14 Thr charge loss, less bulky 133<br />

Tyr318 β15<br />

http://legacy.netlibrary.com/nlreader/nlReader.dll?bookid=12640&filename=Page_58.html (1 of 2) [4/5/2004 4:50:15 PM]<br />

Page 58

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