pabB [2017-06-01 16:34:30]

para-aminobenzoate synthase (subunit A)

locus: BSU00740

pI: 5.23

mw: 53.09 kDa

protein length: 470 aa

gene length: 1410 bp

function: biosynthesis of folate

product: para-aminobenzoate synthase (subunit A)

essential: no

ec: 2.6.1.85

synonyms: pab

Genomic Context

categories

• [category|SW 2|Metabolism] → [category|SW 2.6|Additional metabolic pathways] → [category|SW 2.6.2|Biosynthesis of cofactors] → [category|SW 2.6.2.5|Biosynthesis of folate]

Gene

Coordinates: 82,864 → 84,276

The protein

Catalyzed reaction/ biological activity

• Chorismate + L-glutamine = 4-amino-4-deoxychorismate + L-glutamate (according to Swiss-Prot)

Protein family

• anthranilate synthase component I family (according to Swiss-Prot)

Structure

• [PDB|5CWA] (from ''Mycobacterium tuberculosis'', 39% identity) [Pubmed|26527146]

Expression and Regulation

Operons

• genes: [gene|B189AD3E3D18876E1956763182D835A151727392|pabB]-[gene|956E33AAAADB302EB8663E4B75C917242D3AD2C0|pabA]-[gene|865678B10097C40337F5EEA77FF0F6E7BF5358DC|pabC]-[gene|FA9539CB701BC47FD4E849FBA6D7B201B27C6104|sul]-[gene|AAE44B4F73C7C02F7DB3574B6169E0DE46F4B787|folB]-[gene|D2B189C6292ACE1B25658B407C284E9A683EAE5B|folK]-[gene|F373EBC35805DC551E8AFF6FDC7E43D5587C4700|yazB]-[gene|CE45D56BC413555AF4E7914B5307AD967A358452|yacF]-[gene|24CC89DE55B3C19F80B11D106B9FD241174AE3E4|lysS]
  description: [Pubmed|9084182]

  sigma factors

  • [protein|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|SigA]: sigma factor, [Pubmed|9084182], in [regulon|360F48D576DE950DF79C1A2677B7A35A8D8CC30C|SigA regulon]

  regulation

  • translation repressed by tryptophan ([protein|E030E80134E9DED6ADBC73C7C7435024CDFD38B9|MtrB]) [Pubmed|9084182]

additional information

• the [gene|956E33AAAADB302EB8663E4B75C917242D3AD2C0|pabA]-[gene|865678B10097C40337F5EEA77FF0F6E7BF5358DC|pabC] part of the mRNA is substantially stabilized upon depletion of [protein|872CCB5A49C9000BD95E4B0472556D5F60F7D7A4|RNase Y] [PubMed|21815947]

References

• 9084182,26527146