Hmp

• Description: flavohemoglobin, involved in resistance to nitric oxide (NO)
  
  

Gene name	hmp
Synonyms	ykiA
Essential	no
Product	flavohemoglobin
Function	resistance to NO
Metabolic function and regulation of this protein in SubtiPathways: Stress
MW, pI	44 kDa, 5.705
Gene length, protein length	1197 bp, 399 aa
Immediate neighbours	ykhA, ykzH
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU13040

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: 2 NO + 2 O₂ + NAD(P)H = 2 NO₃^- + NAD(P)⁺ (according to Swiss-Prot)

• Protein family: FAD-binding FR-type domain (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• UniProt: P49852

• KEGG entry: [3]

• E.C. number:

Expression and regulation

• Operon: hmp PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • expressed under anaerobic conditions (ResD) PubMed
  • repressed unless NO is present under anaerobic conditions (NsrR) PubMed

• Regulatory mechanism:
  • ResD: transcription activation PubMed
  • NsrR: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: