1E4I:
reference: Structural basis of increased resistance to thermal denaturation induced by single amino acid substitution in the sequence of beta-glucosidase A from Bacillus polymyxa., Sanz-Aparicio J, Hermoso JA, Martinez-Ripoll M, Gonzalez B, Lopez-Camacho C, Polaina J, Proteins. 1998 Dec 1;33(4):567-76. PMID: 9849940

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