Source: https://tendernation.io/opportunities/01a13cf5-4ee1-7008-9407-200af80e07a0/gb-london-rbgkew1276-whole-genome-sequencing-for-cacao-dna-from-herbarium-spe awarded GB open procedure Suitable for SMEs # GB-London: RBGKEW1276 - Whole Genome Sequencing for cacao DNA from herbarium specimens [Bip Solutions Limited](https://tendernation.io/buyers/bip-solutions-limited) Estimated value £17,920 Published 22 Mar 2024 Deadline Closed 16 Feb 2024 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Small contract value Valued under £135,018 including VAT, the lowest Procurement Act threshold for goods and services. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender The Royal Botanic Gardens, Kew (RBG Kew) intends to appoint a supplier for a high-throughput sequencing service from ancient-DNA extractions sourced from historical herbarium collections of cacao specimens (Theobroma cacao, Malvaceae) and wild relative species (Theobroma/Herrania spp.). Utilizing a CTAB-extraction method, the extracted samples will be sent in batches. The supplier must conduct pre-quality control (QC) tests (including RNase treatment and DNA purification, if necessary) on these total-genome DNA extractions, ensuring acceptable yields and concentrations. Tasks also include library preparation using the Nextera XT Library Kit and performing paired-end whole genomic sequencing (WGS) using the Illumina NovaSeq 6000 (or an equally powerful sequencing platform) to seek obtaining ideally ~12 Gb per sample, depending on the conditions of the sample. This process aims to cover 120-140 samples, targeting a coverage of 15-30x each, given the known genome size of Theobroma species at ~450-490 Mbp. The supplier should be acquainted with high-throughput sequencing from aged herbarium samples, due to the historical nature of these collections (preserved over 50-100 years ago). They are expected to have previous experience in the production of satisfactory data under these conditions and will need to state this in the application. Each sample sent will contain 25-50 uL of DNA, predominantly at concentrations of 10 ng/uL (some with less, but never less than 0.5 ng/uL of total DNA). It is expected that many samples will have heavily fragmented DNA, and the supplier should be able to present alternatives to deal with these. Following sequencing, the supplier should conduct post-QC to verify data quality before delivery. Data transfer methods such as USB, HDD, or preferably Cloud transfer are viable options. The genomic data obtained will support an ongoing project at RBG Kew. This project aims to comprehensively study the geographical history, and other population genomic studies of Theobroma cacao at a global scale, utilising molecular data obtained from historical herbarium collections combined with data obtained from other sources. Additional information: The contracting authority considers that this contract may be suitable for economic operators that are small or medium enterprises (SMEs). However, any selection of tenderers will be based solely on the criteria set out for the procurement. Read full description ## CPV classification Research laboratory services Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/da614d87-ee1c-4215-bcc3-c037b1375741) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. 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