page_title: SbtB protein
section_title: Structure
hierarchical_section_title: SbtB protein / Structure
caption_attribution_description: English: Aminoacid sequence and secondary structure of SbtB protein. This figure has been done based on the information of SbtB's PDB (Protein Data Bank) webpage (503P).
context_page_description: SbtB, which stands for sodium-bicarbonate-transporter B, is a protein found in bacteria. This small soluble protein has been classified as a new member of the P-II family that is involved in signal transduction. This protein has been demonstrated to participate in numerous processes including carbon sensing mechanisms in cyanobacteria.
context_section_description: 'SbtB' is a homo trimeric protein. The monomer consists of 120 amino acid residues with molecular weight of 11875 Da. In addition, the monomer contains the following secondary structures:
  Beta-sheets (34% of the chain): there is a total of 4 strands composed by a total of 41 residues.
  Helical structures (26% of the chain): 4 helical structures. The first one consisting of a 3/10-helix and an alpha helix. The rest are exclusively made up by alpha helix structures.
  3 T-turns. The flexible T loop is mostly disordered which is common in the PII like proteins
  the beta sheets and alpha-helical structures are connected by loops.
  A crystallographic structure of SbtB protein has been obtained from ScSbtB (Synechocystis sp.) The apo-ScSbtB shows a canonical ferredoxin-like fold in every subunit. As seen before, the molecular structure of the three subunits is identical. At the N terminus the first beta-sheets face the C terminus. The carboxyl terminus of the last cysteine forms a hydrogen bond with the N terminus. This interaction allows the stabilization of N and C terminus.
caption: Graphical representation of SbtB's secondary structure and aminoacid. Based on SbtB's PDB webpage (503P).[2]
exif: {"Image ImageWidth": "910", "Image ImageLength": "453", "Image BitsPerSample": "[8, 8, 8]", "Image PhotometricInterpretation": "2", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS6 (Windows)", "Image DateTime": "2018:10:14 14:45:25", "Image ExifOffset": "232", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "382", "Thumbnail JPEGInterchangeFormatLength": "3720", "EXIF ExifVersion": "0221", "EXIF ColorSpace": "Uncalibrated", "EXIF ExifImageWidth": "893", "EXIF ExifImageLength": "407"}