Q5PEH8 (CYSI_SALPA) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Sulfite reductase [NADPH] hemoprotein beta-component
Short name=SiR-HP
Short name=SiRHP
EC=1.8.1.2

Gene names

Name:	cysI
Ordered Locus Names:	SPA2803

Organism

Salmonella paratyphi A [Complete proteome] [HAMAP]

Taxonomic identifier

54388 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Gammaproteobacteria › Enterobacteriales › Enterobacteriaceae › Salmonella

Protein attributes

Sequence length	570 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Component of the sulfite reductase complex that catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L-cysteine from sulfate By similarity. HAMAP MF_01540
Catalytic activity	H2S + 3 NADP+ + 3 H2O = sulfite + 3 NADPH. HAMAP MF_01540
Cofactor	Binds 1 siroheme per subunit By similarity. HAMAP MF_01540 Binds 1 4Fe-4S cluster per subunit By similarity. HAMAP MF_01540
Pathway	Sulfur metabolism; hydrogen sulfide biosynthesis; hydrogen sulfide from sulfite (NADPH route): step 1/1. HAMAP MF_01540
Subunit structure	Alpha(8)-beta8. The alpha component is a flavoprotein, the beta component is a hemoprotein By similarity.
Sequence similarities	Belongs to the nitrite and sulfite reductase 4Fe-4S domain family.

Ontologies

Keywords
Biological process	Amino-acid biosynthesis Cysteine biosynthesis
Ligand	4Fe-4S Heme Iron Iron-sulfur Metal-binding NADP
Molecular function	Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	cysteine biosynthetic process Inferred from electronic annotation. Source: UniProtKB-KW
Cellular component	sulfite reductase complex (NADPH) Inferred from electronic annotation. Source: InterPro
Molecular function	4 iron, 4 sulfur cluster binding Inferred from electronic annotation. Source: UniProtKB-KW NADP binding Inferred from electronic annotation. Source: InterPro heme binding Inferred from electronic annotation. Source: InterPro sulfite reductase (NADPH) activity Inferred from electronic annotation. Source: EC
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Initiator methionine	1	1	Removed By similarity
	Chain	2 – 570	569	Sulfite reductase [NADPH] hemoprotein beta-component HAMAP MF_01540		PRO_0000199906
Sites
	Metal binding	434	1	Iron-sulfur (4Fe-4S) By similarity
	Metal binding	440	1	Iron-sulfur (4Fe-4S) By similarity
	Metal binding	479	1	Iron-sulfur (4Fe-4S) By similarity
	Metal binding	483	1	Iron (siroheme axial ligand) By similarity
	Metal binding	483	1	Iron-sulfur (4Fe-4S) By similarity

Sequences

	Sequence		Length	Mass (Da)
	Q5PEH8 [UniParc]. Last modified January 23, 2007. Version 3. Checksum: DD356D070577EAE5	FASTA	570	64,016
	10 20 30 40 50 60 MSEKHPGPLV VEGKLSDAER MKRESNFLRG TIAEDLNDGL TGGFHGDNFL LIRFHGMYQQ 70 80 90 100 110 120 DDRDIRAERA AQKLEPRHAM LLRCRLPGGV ITTTQWKAID KFAADNTIYG SIRLTNRQTF 130 140 150 160 170 180 QFHGILKKNV KPVHQMLHSV GLDALATAND MNRNVLCTSN PYESQLHAEA YEWAKKISEH 190 200 210 220 230 240 LLPRTRAYAE IWLDQEKVAT TDEEPILGQT YLPRKFKTTV VIPPQNDIDL HANDMNLVAI 250 260 270 280 290 300 AENGKLVGFN LLVGGGLSIE HGNKKTYART ASEFGYLPLE HTLAVAEAVV TTQRDWGNRT 310 320 330 340 350 360 DRKNAKTKYT LERVGVDTFK EEVERRAGIK FEPIRPYEFT GRGDRIGWVK GIDNNWHLTL 370 380 390 400 410 420 FIENGRILDY SGRPLKTGLL EIAKIHQGEF RITANQNLII ASVPESQKAK IETLARDHGL 430 440 450 460 470 480 MNAVKPQREN SMACVSFPTC PLAMAEAERF LPSFTDKVEA ILEKHGIPDE HIVMRVTGCP 490 500 510 520 530 540 NGCGRAMLAE IGLVGKAPGR YNLHLGGNRI GTRIPRMYKE NITEPDILAS LGELIGRWAK 550 560 570 EREAGEGFGD FTVRAGIIRP VLDPARDFWE

References

[1]

"Comparison of genome degradation in Paratyphi A and Typhi, human-restricted serovars of Salmonella enterica that cause typhoid." McClelland M., Sanderson K.E., Clifton S.W., Latreille P., Porwollik S., Sabo A., Meyer R., Bieri T., Ozersky P., McLellan M., Harkins C.R., Wang C., Nguyen C., Berghoff A., Elliott G., Kohlberg S., Strong C., Du F. , Carter J., Kremizki C., Layman D., Leonard S., Sun H., Fulton L., Nash W., Miner T., Minx P., Delehaunty K., Fronick C., Magrini V., Nhan M., Warren W., Florea L., Spieth J., Wilson R.K. Nat. Genet. 36:1268-1274(2004) [PubMed: 15531882] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 9150 / SARB42.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CP000026 Genomic DNA. Translation: AAV78655.1.
RefSeq	YP_151967.1. NC_006511.1.
3D structure databases
ProteinModelPortal	Q5PEH8.
SMR	Q5PEH8. Positions 81-570.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	3177690.
GenomeReviews	Gene locus SPA2803 in contig CP000026_GR.
KEGG	spt:SPA2803.
NMPDR	fig|295319.3.peg.508.
PATRIC	32355165. VBISalEnt134188_2980.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	HBG626671.
OMA	TRQAFQM.
ProtClustDB	PRK13504.
Enzyme and pathway databases
BioCyc	SENT295319:SPA2803-MONOMER.
Family and domain databases
HAMAP	MF_01540. CysI. [Tree]
InterPro	IPR011786. CysI. IPR005117. NiRdtase/SiRdtase_haem-b_fer. IPR006067. NO2/SO3_Rdtase_4Fe4S_dom. IPR006066. NO2/SO3_Rdtase_FeS/sirohaem_BS. [Graphical view]
Gene3D	G3DSA:3.90.480.10. G3DSA:3.90.480.10. 2 hits.
KO	K00381.
Pfam	PF01077. NIR_SIR. 2 hits. PF03460. NIR_SIR_ferr. 2 hits. [Graphical view]
PRINTS	PR00397. SIROHAEM.
SUPFAM	SSF55124. NiR_SiRalpha_1/3. 2 hits.
TIGRFAMs	TIGR02041. CysI. 1 hit.
PROSITE	PS00365. NIR_SIR. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

CYSI_SALPA

Accession

Primary (citable) accession number: Q5PEH8

Entry history

Integrated into UniProtKB/Swiss-Prot:	September 13, 2005
Last sequence update:	January 23, 2007
Last modified:	January 25, 2012
This is version 49 of the entry and version 3 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program