New xylose transporters support the simultaneous consumption of glucose and xylose in Escherichia coli
Ontology highlight
ABSTRACT:
ORGANISM(S): Escherichia coli ATCC 8739
PROVIDER: GSE186804 | GEO | 2022/10/01
REPOSITORIES: GEO
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Project description:Purpose: In order to identify genes for steroid 14α-hydroxylase P450lun and its associated redox partner CPRlun in filamentous fungus Cochliobolus lunatus ATCC#12017 Methods: Strand-specific RNA-seq libraries were constructed for two samples, including (I) Mycelia of C. lunatus treated with mock N, N-dimethylformamide (DMF); (II) Mycelia of C. lunatus treated with 170 mg/L 11-deoxycortisol 21-acetate (RSA) dissolved in N,N-dimethylformamide. For preparation of RNA samples, germinated young mycelia of C. lunatus after 22-24 pre-culture in liquid potato dextrose broth medium were harvested and transferred into a new 30 ml potassium phosphate buffer supplement with either 170 mg/L RSA dissolved in DMF, or an equal volume of DMF as mock. Additional two-hours cultivation was performed to induction of the P-450lun gene expression. Total RNA for samples were isolated using TRIzol reagent (Invitrogen, Grand Island, USA), then used for high-throughput RNA sequencing. The two 150-nt strand-specific paired-end RNA-seq libraries were generated commercially at Novogene Biotechnology Co. Ltd (Tianjin, China) by using Illumina’s Hiseq X Ten platform (Illumina, San Diego, USA). The clean reads were used to create a de novo transcriptome assembly using the Trinity pipeline (v2.4.0). The abundance for each of the resulted transcripts was calculated by RSEM (v1.2.0) using the Fragments Per Kilobase per Million (FPKM) method. Results: A total of 7.1 and 7.9 million 150-bp paired-end clean reads were separately generated from the DMF mock and RSA induced samples,and 23957 transcripts with length more than 600nt were assembled from the pooled reads of both samples using Trinity program. The translated sequences of these transcripts were predicted using TransDecoder, and then used as queries to search against the SWISS-PROT and the Pfam databases for functional annotation. Transcripts DN8493 and DN2353 were separately identified as C.lunatus P-450lun and CPRlun genes. Conclusions: The 14β-hydroxylase system of C.lunatus was deciphered by transcriptome analysis.
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