Identification of a 29 kDa protein in the envelope of Mycobacterium smegmatis as a putative ferri-exochelin receptor

Article Abstract:

The 29 kDa iron-regulated protein in the envelope of Mycobacterium smegmatis is a ferri-exochelin receptor. The protein forms a complex with 55Fe(III)-exochelin in an envelope preparation from cells lacking iron. The non-denaturing detergent CHAPS efficiently extracts the complex. Affinity chromatography of the complex using a ferri-exochelin-Sepharose 4B matrix results in retention of a 29 kDa and a 25 kDa protein. The 25 kDa protein probably functions in the formation and maintenance of the ferri-exochelin receptor.

Analysis, Physiological aspects, Proteins, Iron, Iron (Metal)

---

The occurrence of carboxymycobactin, the siderophore of pathogenic mycobacteria, as a second extracellular siderophore in Mycobacterium smegmatis

Article Abstract:

Culture filtrates of the non-pathogen Mycobacterium smegmatis showed the occurrence of a carboxymycobactin as a second extracellular siderophore. As many as 12 similar molecules were produced, with various chain lengths that can be detected by HPLC or HPTLC. Its presence indicates a wider spread of the molecule than previously thought, despite its being a minor siderophore component as evidenced by the amount generated by M. smegmatis.

Extracellular matrix, Biomolecules

---

Polyadenylylation in mycobacteria: evidence for oligo(dT)-primed cDNA synthesis

Article Abstract:

Polyadenylylation of mRNA appears to be common in the mycobacteria. RNA polyadenylylation controls plasmid replication, modulates RNA stability and may participate in mRNA translation.

DNA, Mycobacteria, Messenger RNA

Similar abstracts:

• Abstracts: Identification of a novel group of bacteria in sludge from a deteriorated biological phosphorus removal reactor
• Abstracts: Identification of domains conferring G protein regulation on inward rectifier potassium channels. Strong voltage-dependent inward rectification of inward rectifier K+ channels is caused by intracellular spermine
• Abstracts: Isozyme variation among biological species in the Gibberella fujikuroi species complex (Fusarium section Liseola)
• Abstracts: Induction of apoptotic program in cell-free extracts: requirement for dATP and Cytochrome c. DFF, a heterodimeric protein that functions downstream of caspase-3 to trigger DNA fragmentation during apoptosis
• Abstracts: Characterization of epitopes involved in the neutralization of Pasteurella haemolytica serotype A1 leukotoxin

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.