![]() ![]() The 1.X numbering system was continued for bug fixes (versions 1.3a, 1.3b, 1.3c) and for the release of CODA2.0 features on top of anĮssentially CODA 1.3 core (versions 1.4, 1.4a and 1.5). The name CODA 2.0 was reserved for this new, mostly re-written version of CODA. Spectrometer in Hall B it was clear that a major rewrite of large sections of code was advisable to take advantage of lessons learned from halls A and C, and advances in programming techniques and operating system features since the Version 1.4.1 proved to be so stable that no further major modifications were made and CODA developmentĮffort after 1994 focussed on the CODA version 2 required to bring the CLAS detector online.įrom the predicted high data rates (>10 Mbytes/Sec) and complexity of the CLAS Physics experiments in Hall C and the work then being undertaken by the hall A and B collaborations to prepare for data taking. During late 1993 and through 1994 the focus of the group was to prepare and support the first Versions 1.4 and 1.4.1 of CODA were a response to the use of CODA in hall CĪnd contained updates to facilitate the running of "real experiments". This has since been a great time saver as, at the end of 1995, the decision was made by the laboratory to phase out ULTRIX and introduce AIX and SOLARIS.ĬODA was never ported to AIX, by the end of the port to Solaris AIX had fallen out of favor as a recommended operating system. Version 1.3 of CODA was introduced in 1993 to provide cross platform support for ULTRIX, VxWorks and (A decision made during the last months of Chip Watson's tenure as head of the data acquisition group at CEBAF).Īt about the same time the laboratory was in the throes of introducing the HP-UX operating system to run along side ULTRIX. The original plan was that version of CODA after 1.2 would be version 2.0. Versions and were included in revisions and updates. Many lessons were learned during the use of the early CODA These results indicate that Bacillus ypgA3 gene is fni, a nonessential gene encoding type 2 IPP isomerase.The 1.x versions of CODA were based on code originally written on ULTRIX workstations starting in 1990 with the first useable version released within the lab in 1992. Disruption of the ypgA3 gene was not lethal to B. The enzyme also catalyzed the reverse reaction in the presence of both the cofactors. The ypgA3 protein converted IPP to its isomer dimethylallyl diphosphate in the presence of both FMN and NADPH. The ypgA3 gene was expressed with an N-terminal His-tag in Escherichia coli and the purified soluble protein was characterized in detail. The longest gene product, which was named ypgA3, showed the most significant homology to the Streptomyces fni gene product. A database search found three new putative start codons in 129, 225, and 411 bases upstream of the original start codon of the ypgA gene. However, the ypgA product was about 140 amino acids shorter in the N-terminal than the Streptomyces fni gene product. An fni gene homolog, ypgA, was detected in the database of the Bacillus subtilis genome. ![]() strain CL190 as type 2 isopentenyl diphosphate (IPP) isomerase, which needs both FMN and NADPH for enzyme activity. ![]() We previously identified the fni gene of Streptomyces sp. ![]()
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