Protein: Anti-sigma-L factor RslA (Regulator of SigL) (Sigma-L anti-sigma factor RslA) (P9WJ67)
Organism: Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Function: An anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigL. ECF sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut extracytoplasmically (site-1 protease, S1P), then within the membrane itself (site-2 protease, S2P, Rip1), while cytoplasmic proteases finish degrading the regulatory protein, liberating the sigma factor.
Subcellular location: Cell membrane {ECO:0000305}; Single-pass membrane protein {ECO:0000305}.
Sequence: MTMPLRGLGPPDDTGVREVSTGDDHHYAMWDAAYVLGALSAADRREFEAHLAGCPECRGAVTELCGVPALLSQLDRDEVAAISESAPTVVASGLSPELLPSLLAAVHRRRRRTRLITWVASSAAAAVLAIGVLVGVQGHSAAPQRAAVSALPMAQVGTQLLASTVSISGEPWGTFINLRCVCLAPPYASHDTLAMVVVGRDGSQTRLATWLAEPGHTATPAGSISTPVDQIAAVQVVAADTGQVLLQRSL
InterPro domains: - IPR027383: Putative zinc-finger (domain) [33-58]
- IPR051474: Anti-sigma-K/W factor (family) [32-152]
- IPR041916: Anti-sigma factor, zinc-finger domain superfamily (homologous_superfamily) [24-87]
Interaction partners: - ECF RNA polymerase sigma factor SigL
- Possible oxidoreductase
- Probable conserved transmembrane transport protein MmpL13a
- Possible transcriptional regulatory protein
- Polyketide synthase-like Pks10
- Probable conserved transmembrane transport protein MmpL13b
- Conserved protein
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0140110 (transcription regulator activity), GO:0005488 (binding), GO:0003712 (transcription coregulator activity), GO:0005515 (protein binding), GO:0003714 (transcription corepressor activity)
Biological Process (BP): GO:0008150 (biological process), GO:0065007 (biological regulation), GO:0050789 (regulation of biological process), GO:0019222 (regulation of metabolic process), GO:0050794 (regulation of cellular process), GO:0060255 (regulation of macromolecule metabolic process), GO:0031323 (regulation of cellular metabolic process), GO:0080090 (regulation of primary metabolic process), GO:0009889 (regulation of biosynthetic process), GO:0051171 (regulation of nitrogen compound metabolic process), GO:0019219 (regulation of nucleobase-containing compound metabolic process), GO:0051252 (regulation of RNA metabolic process), GO:0010556 (regulation of macromolecule biosynthetic process), GO:0010468 (regulation of gene expression), GO:0031326 (regulation of cellular biosynthetic process), GO:2001141 (regulation of RNA biosynthetic process), GO:0006355 (regulation of DNA-templated transcription), GO:1903506 (regulation of nucleic acid-templated transcription)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0071944 (cell periphery), GO:0016020 (membrane), GO:0030312 (external encapsulating structure), GO:0005618 (cell wall), GO:0005886 (plasma membrane), GO:0009274 (peptidoglycan-based cell wall)