Multiple – Wavelength Catalogs of the Point Sources in the South Ecliptic Pole Region Detected by Blast

The goal of this project is to examine the far - infrared sources in the South Ecliptic Pole region (SEP) observed by the Balloon-Borne Large Aperture Submillimeter Telescope (BLAST). A primary science goal is to understand star formation processes. Most of the sources are assumed to be luminous infrared galaxies (LIRGs), in which high rates of star formation are believed to be occurring. The BLAST experiment mapped the 10 SEP at three wavelengths (250, 350 and 500 μm). To aid future studies of the SEP, three lists of interesting sources were created with an IDL source extraction algorithm. The first list is a catalog of all 5 σ sources and their counterparts. The second list contains sources which have unambiguous counterparts in the three wavelengths. The sources of the third list are likely to be high redshift. Spectral Energy Distributions (SED) were fit to each of the listed sources with an IDL SED fitter. Using the SED, preliminary estimates of luminosity and star formation rates can be made. The combined and unambiguous catalogs can be used to select targets for future observations. The third list will be especially useful for selecting high redshift LIRGs for future observations. Many of the presumed high redshift sources are unrealistically bright. It is possible that they are high redshift sources which are gravitationally lensed and magnified by clusters. The number of bright high redshift sources identified was used to test a recent theoretical model of the abundance of clusters

Recognition of two distinct elements in the RNA substrate by the RNA-binding domain of the T. thermophilus DEAD box helicase Hera

DEAD box helicases catalyze the ATP-dependent destabilization of RNA duplexes. Whereas duplex separation is mediated by the helicase core shared by all members of the family, flanking domains often contribute to binding of the RNA substrate. The Thermus thermophilus DEAD-box helicase Hera (for “heat-resistant RNA-binding ATPase”) contains a C-terminal RNA-binding domain (RBD). We have analyzed RNA binding to the Hera RBD by a combination of mutational analyses, nuclear magnetic resonance and X-ray crystallography, and identify residues on helix α1 and the C-terminus as the main determinants for high-affinity RNA binding. A crystal structure of the RBD in complex with a single-stranded RNA resolves the RNA–protein interactions in the RBD core region around helix α1. Differences in RNA binding to the Hera RBD and to the structurally similar RBD of the Bacillus subtilis DEAD box helicase YxiN illustrate the versatility of RNA recognition motifs as RNA-binding platforms. Comparison of chemical shift perturbation patterns elicited by different RNAs, and the effect of sequence changes in the RNA on binding and unwinding show that the RBD binds a single-stranded RNA region at the core and simultaneously contacts double-stranded RNA through its C-terminal tail. The helicase core then unwinds an adjacent RNA duplex. Overall, the mode of RNA binding by Hera is consistent with a possible function as a general RNA chaperone

Guidelines for expressing community user identifiers (AARC-G026)

This document provides guidelines for expressing Community User Identifiers (CUIDs) such that the identifier values can be transported in an interoperable way across AARC Blueprint Architecture (BPA) compliant Authentication & Authorisation Infrastructures (AAIs). The CUID is a subject identifier, where the subjects are generally but not exclusively natural persons. The community user identifier is an attribute of the subject’s digital identity which is managed by the Community AAI. The guidelines specify how the CUID is communicated from the Community AAI to its connected services, i.e. infrastructure services (accessible through Infrastructure Proxies), generic and community services

Recognition of two distinct elements in the RNA substrate by the RNA-binding domain of the T. thermophilus DEAD box helicase Hera

DEAD box helicases catalyze the ATP-dependent destabilization of RNA duplexes. Whereas duplex separation is mediated by the helicase core shared by all members of the family, flanking domains often contribute to binding of the RNA substrate. The Thermus thermophilus DEAD-box helicase Hera (for "heat-resistant RNA-binding ATPase”) contains a C-terminal RNA-binding domain (RBD). We have analyzed RNA binding to the Hera RBD by a combination of mutational analyses, nuclear magnetic resonance and X-ray crystallography, and identify residues on helix α1 and the C-terminus as the main determinants for high-affinity RNA binding. A crystal structure of the RBD in complex with a single-stranded RNA resolves the RNA-protein interactions in the RBD core region around helix α1. Differences in RNA binding to the Hera RBD and to the structurally similar RBD of the Bacillus subtilis DEAD box helicase YxiN illustrate the versatility of RNA recognition motifs as RNA-binding platforms. Comparison of chemical shift perturbation patterns elicited by different RNAs, and the effect of sequence changes in the RNA on binding and unwinding show that the RBD binds a single-stranded RNA region at the core and simultaneously contacts double-stranded RNA through its C-terminal tail. The helicase core then unwinds an adjacent RNA duplex. Overall, the mode of RNA binding by Hera is consistent with a possible function as a general RNA chaperon

A specification for IdP hinting (AARC-G061)

This document defines a generic browser-based protocol for conveying - to services - hints about the IdPs or SP-IdP-proxies that should be used for authenticating the principal. This protocol, colloquially referred to as Identity Provider (IdP) hinting, can greatly simplify the discovery process for the end-user, by enabling entities to produce and send hints that can be consumed by SP-IdP-proxies for routing the user to the correct upstream SP-IdP-Proxy or authenticating IdP

A specification for providing information about an end service to a Discovery Service (AARC-G063)

This specification defines how SP-IdP Proxies can provide hints about services towards Discovery Services to improve the user experience of the authentication process