Fibronectin 3 (FN3) and Ig-like modules (Ig) are usually collocated beside modular cellulase catalytic domains. However, very few researchers have investigated the role of these modules. In a previous study, we have sequenced and analyzed bacterial metagenomic DNA in Vietnamese goats' rumen and found that cellulase-producing bacteria and cellulase families were dominant [1]. In this study, the properties of modular cellulases and the role of a FN3 in unique endoglucanase FN3-GH5 were determined.

中文翻译：

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宏基因组DNA分析阐明了山羊瘤胃中细菌纤维素酶的某些特征，以及纤连蛋白3模块对内切葡聚糖酶功能的作用。

纤连蛋白3（FN3）和Ig样模块（Ig）通常并置在模块化纤维素酶催化域的旁边。但是，很少有研究人员调查这些模块的作用。在先前的研究中，我们对越南山羊瘤胃中的细菌宏基因组DNA进行了测序和分析，发现纤维素酶生产细菌和纤维素酶家族占主导地位[1]。在这项研究中，确定了模块化纤维素酶的特性以及FN3在独特的内切葡聚糖酶FN3-GH5中的作用。