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Mongad, Dattatray S.; Chavan, Nikeeta S.; Narwade, Nitin P.; Dixit, Kunal; Shouche, Yogesh S.; Dhotre, Dhiraj P.
Genomics (San Diego, Calif.), 11/2021, Volume: 113, Issue: 6Journal Article
The 16S rRNA gene amplicon sequencing is a popular technique that provides accurate characterization of microbial taxonomic abundances but does not provide any functional information. Several tools are available to predict functional profiles based on 16S rRNA gene sequence data that use different genome databases and approaches. As variable regions of partially-sequenced 16S rRNA gene cannot resolve taxonomy accurately beyond the genus level, these tools may give inflated results. Here, we developed ‘MicFunPred’, which uses a novel approach to derive imputed metagenomes based on a set of core genes only, thereby minimizing false-positive predictions. On simulated datasets, MicFunPred showed the lowest False Positive Rate (FPR) with mean Spearman's correlation of 0.89 (SD = 0.03), while on seven real datasets the mean correlation was 0.75 (SD = 0.08). MicFunPred was found to be faster with low computational requirements and performed better or comparable when compared with other tools. •Prediction of imputed metagenomes based on 16S rRNA amplicon sequence data.•MicFunPred: a conservative approach based on core genes predicted at genus level.•Higher accuracy and lower False Positive Rate (FPR).•Fast and requires low computational resources.
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