Q9Z806 (RL21_CHLPN) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
50S ribosomal protein L21

Gene names

Name:	rplU
Synonyms:	rl21
Ordered Locus Names:	CPn_0546, CP_0206, CpB0567

Organism

Chlamydia pneumoniae (Chlamydophila pneumoniae) [Complete proteome] [HAMAP]

Taxonomic identifier

83558 [NCBI]

Taxonomic lineage

Bacteria › Chlamydiae › Chlamydiales › Chlamydiaceae › Chlamydia/Chlamydophila group › Chlamydia

Protein attributes

Sequence length	106 AA.
Sequence status	Complete.
Protein existence	Inferred from homology

General annotation (Comments)

Function	This protein binds to 23S rRNA in the presence of protein L20 By similarity. HAMAP MF_01363
Subunit structure	Part of the 50S ribosomal subunit. Contacts protein L20 By similarity.
Sequence similarities	Belongs to the ribosomal protein L21P family.
Sequence caution	The sequence AAP98496.1 differs from that shown. Reason: Erroneous initiation.

Ontologies

Keywords
Ligand	RNA-binding rRNA-binding
Molecular function	Ribonucleoprotein Ribosomal protein
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	translation Inferred from electronic annotation. Source: InterPro
Cellular component	ribosome Inferred from electronic annotation. Source: UniProtKB-KW
Molecular function	rRNA binding Inferred from electronic annotation. Source: UniProtKB-KW structural constituent of ribosome Inferred from electronic annotation. Source: InterPro
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 106	106	50S ribosomal protein L21 HAMAP MF_01363		PRO_0000180996

Sequences

	Sequence		Length	Mass (Da)
	Q9Z806 [UniParc]. Last modified May 1, 1999. Version 1. Checksum: C6D25D9D90D81761	FASTA	106	12,151
	10 20 30 40 50 60 MEPYAVIQTG SKQYQVRSGD VIDVELLGEV ASDKEVIFQD VLFVFDGTKA SLGSPTIANA 70 80 90 100 QVKAEYLSHV KGEKVVAYKY KKRKNYHRKH GHRQKYLRVK IREILI

References

[1]	"Comparative genomes of Chlamydia pneumoniae and C. trachomatis." Kalman S., Mitchell W.P., Marathe R., Lammel C.J., Fan J., Hyman R.W., Olinger L., Grimwood J., Davis R.W., Stephens R.S. Nat. Genet. 21:385-389(1999) [PubMed: 10192388] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: CWL029.
[2]	"Genome sequences of Chlamydia trachomatis MoPn and Chlamydia pneumoniae AR39." Read T.D., Brunham R.C., Shen C., Gill S.R., Heidelberg J.F., White O., Hickey E.K., Peterson J.D., Utterback T.R., Berry K.J., Bass S., Linher K.D., Weidman J.F., Khouri H.M., Craven B., Bowman C., Dodson R.J., Gwinn M.L. , Nelson W.C., DeBoy R.T., Kolonay J.F., McClarty G., Salzberg S.L., Eisen J.A., Fraser C.M. Nucleic Acids Res. 28:1397-1406(2000) [PubMed: 10684935] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: AR39.
[3]	"Comparison of whole genome sequences of Chlamydia pneumoniae J138 from Japan and CWL029 from USA." Shirai M., Hirakawa H., Kimoto M., Tabuchi M., Kishi F., Ouchi K., Shiba T., Ishii K., Hattori M., Kuhara S., Nakazawa T. Nucleic Acids Res. 28:2311-2314(2000) [PubMed: 10871362] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: J138.
[4]	"The genome sequence of Chlamydia pneumoniae TW183 and comparison with other Chlamydia strains based on whole genome sequence analysis." Geng M.M., Schuhmacher A., Muehldorfer I., Bensch K.W., Schaefer K.P., Schneider S., Pohl T., Essig A., Marre R., Melchers K. Submitted (MAY-2002) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: TW-183.
+	Additional computationally mapped references.

Cross-references

Sequence databases
EMBL GenBank DDBJ	AE001363 Genomic DNA. Translation: AAD18686.1. AE002161 Genomic DNA. Translation: AAF38077.1. BA000008 Genomic DNA. Translation: BAA98752.1. AE009440 Genomic DNA. Translation: AAP98496.1. Different initiation.
PIR	C72065. F86558.
RefSeq	NP_224742.1. NC_000922.1. NP_300601.1. NC_002491.1. NP_444757.1. NC_002179.2. NP_876839.1. NC_005043.1.
3D structure databases
ProteinModelPortal	Q9Z806.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Genome annotation databases
GeneID	1467246. 895453. 919196. 962946.
GenomeReviews	Gene locus CPn_0546 in contig AE001363_GR. Gene locus CP_0206 in contig AE002161_GR. Gene locus CpB0567 in contig AE009440_GR. Gene locus rplU in contig BA000008_GR.
KEGG	cpa:CP0206. cpn:CPn0546. cpt:CpB0567.
TIGR	CP_0206.
Phylogenomic databases
HOGENOM	HBG706775.
OMA	IKVEQIA.
ProtClustDB	PRK05573.
Enzyme and pathway databases
BioCyc	CPNE115711:CP_0206-MONOMER. CPNE115713:CPN0546-MONOMER. CPNE138677:CPJ0546-MONOMER. CPNE182082:CPB0567-MONOMER.
Family and domain databases
HAMAP	MF_01363. Ribosomal_L21. [Tree]
InterPro	IPR001787. Ribosomal_L21. IPR018258. Ribosomal_L21_CS. [Graphical view]
KO	K02888.
PANTHER	PTHR21349. Ribosomal_L21p. 1 hit.
Pfam	PF00829. Ribosomal_L21p. 1 hit. [Graphical view]
TIGRFAMs	TIGR00061. L21. 1 hit.
PROSITE	PS01169. RIBOSOMAL_L21. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

RL21_CHLPN

Accession

Primary (citable) accession number: Q9Z806
Secondary accession number(s): Q9JQ35

Entry history

Integrated into UniProtKB/Swiss-Prot:	May 30, 2000
Last sequence update:	May 1, 1999
Last modified:	January 25, 2012
This is version 71 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Prokaryotic Protein Annotation Program