1YT4:
reference: Structural Consequences of the Inhibitor-Resistant Ser130Gly Substitution in TEM beta-Lactamase(,)( )., Thomas VL, Golemi-Kotra D, Kim C, Vakulenko SB, Mobashery S, Shoichet BK, Biochemistry 2005 Jul 5;44(26):9330-9338. PMID: 15981999

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