P51278 (CHLB_PORPU) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Light-independent protochlorophyllide reductase subunit B
Short name=DPOR subunit B
Short name=LI-POR subunit B
EC=1.18.-.-

Gene names

Name:

chlB

Encoded on

Plastid; Chloroplast

Organism

Porphyra purpurea

Taxonomic identifier

2787 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Rhodophyta › Bangiophyceae › Bangiales › Bangiaceae › Porphyra

Protein attributes

Sequence length	507 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	Uses Mg-ATP and reduced ferredoxin to reduce ring D of protochlorophyllide (Pchlide) to form chlorophyllide a (Chlide). This reaction is light-independent By similarity. HAMAP-Rule MF_00353
Pathway	Porphyrin-containing compound metabolism; chlorophyll biosynthesis (light-independent).
Subunit structure	Protochlorophyllide reductase is thought to be composed of three subunits; ChlL, ChlN and ChlB. Could form a heterotetramer of two ChlB and two ChlN subunits By similarity.
Subcellular location	Plastid › chloroplast HAMAP-Rule MF_00353.
Sequence similarities	Belongs to the ChlB/BchB/BchZ family.

Ontologies

Keywords
Biological process	Chlorophyll biosynthesis Photosynthesis
Cellular component	Chloroplast Plastid
Molecular function	Oxidoreductase
Gene Ontology (GO)
Biological_process	light-independent chlorophyll biosynthetic process Inferred from electronic annotation. Source: UniProtKB-UniPathway photosynthesis, dark reaction Inferred from electronic annotation. Source: InterPro
Cellular_component	chloroplast Inferred from electronic annotation. Source: UniProtKB-SubCell
Molecular_function	oxidoreductase activity, acting on iron-sulfur proteins as donors Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 507	507	Light-independent protochlorophyllide reductase subunit B HAMAP-Rule MF_00353		PRO_0000219842

Sequences

	Sequence		Length	Mass (Da)
	P51278 [UniParc]. Last modified October 1, 1996. Version 1. Checksum: 234453C18A0B0AD1	FASTA	507	57,288
	10 20 30 40 50 60 MKLAYWMYAG PAHIGTLRVA SSFKKVHAIM HAPLGDDYFN VMRSMLERDR DFTPVTASVV 70 80 90 100 110 120 DRHVLARGSQ EKVVENITRK DREEKPDLVI LTPTCTSSIL QEDLQNFVSR ASIETEADVL 130 140 150 160 170 180 LADVNHYRVN ELQASDRTLE QIVTFYMEKA KSNNILTKKT IKPSVNIIGA VSLGFHNQHD 190 200 210 220 230 240 IAELKRLFHD LDIQINQVIP ENASVHDLKN LPSAWFNFVP YRETGLMTAL YLKKEFNMPY 250 260 270 280 290 300 IDITPMGIVQ TATSIRSIQK ILNALGATVN YEKYIDEQTR FISQSAWFSR SIDCQNLTGK 310 320 330 340 350 360 KAIVFGDATH AAAITRILHQ EMGIHVAWCG TYCKYDEEWF REQVKGFCDE VIISDDHGLI 370 380 390 400 410 420 GDLIAKTEPA AIFGTQMERH IGKRLNIPCG VISSPVHIQN FPLSYRPFLG YEGTNQIADL 430 440 450 460 470 480 VYNSFTLGME DHLLEIFGGH DTTEALSVGI SADDSLNWSD EAQKELSKIP GFVRGKVKRN 490 500 TEKFARDCSK NLITLELMYE AKEKVSS

References

[1]	"Complete nucleotide sequence of the Porphyra purpurea chloroplast genome." Reith M.E., Munholland J. Plant Mol. Biol. Rep. 13:333-335(1995) Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: Avonport.

Cross-references

Sequence databases
EMBL GenBank DDBJ	U38804 Genomic DNA. Translation: AAC08164.1.
PIR	S73199.
RefSeq	NP_053888.1. NC_000925.1.
3D structure databases
ProteinModelPortal	P51278.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	809908.
Phylogenomic databases
ProtClustDB	CHL00076.
Enzyme and pathway databases
UniPathway	UPA00670.
Family and domain databases
HAMAP	MF_00353. ChlB_BchB.
InterPro	IPR000510. Nase/OxRdtase_comp1. IPR013580. P-CP/CP_red_C. IPR005969. Protochl_reductB. IPR016209. Protochlorophyllide_Rdtase. [Graphical view]
Pfam	PF00148. Oxidored_nitro. 1 hit. PF08369. PCP_red. 1 hit. [Graphical view]
PIRSF	PIRSF000163. PCP_ChlB. 1 hit.
TIGRFAMs	TIGR01278. DPOR_BchB. 1 hit.
ProtoNet	Search...

Entry information

Entry name

CHLB_PORPU

Accession

Primary (citable) accession number: P51278

Entry history

Integrated into UniProtKB/Swiss-Prot:	October 1, 1996
Last sequence update:	October 1, 1996
Last modified:	May 29, 2013
This is version 61 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)