5E2J:
reference: Polarity Alteration of Calcium Site Induces a Hydrophobic Interaction Network and Enhances Cel9A Endoglucanase Thermostability., Wang HJ, Hsiao YY, Chen YP, Ma TY, Tseng CP, Appl Environ Microbiol. 2016 Jan 4. pii: AEM.03326-15. PMID: 26729722

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