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Protein

Protein S100-B

Gene

S100B

Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Weakly binds calcium but binds zinc very tightly-distinct binding sites with different affinities exist for both ions on each monomer. Physiological concentrations of potassium ion antagonize the binding of both divalent cations, especially affecting high-affinity calcium-binding sites. Binds to and initiates the activation of STK38 by releasing autoinhibitory intramolecular interactions within the kinase. Interaction with AGER after myocardial infarction may play a role in myocyte apoptosis by activating ERK1/2 and p53/TP53 signaling. Could assist ATAD3A cytoplasmic processing, preventing aggregation and favoring mitochondrial localization. May mediate calcium-dependent regulation on many physiological processes by interacting with other proteins, such as TPR-containing proteins, and modulating their activity (By similarity).By similarity

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Calcium bindingi19 – 32141; low affinityAdd
BLAST
Calcium bindingi62 – 73122; high affinityAdd
BLAST

GO - Molecular functioni

Complete GO annotation...

Keywords - Ligandi

Calcium, Metal-binding, Zinc

Names & Taxonomyi

Protein namesi
Recommended name:
Protein S100-B
Alternative name(s):
S-100 protein beta chain
S-100 protein subunit beta
S100 calcium-binding protein B
Gene namesi
Name:S100B
OrganismiOryctolagus cuniculus (Rabbit)
Taxonomic identifieri9986 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
Proteomesi
  • UP000001811 Componenti: Unplaced

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methionineiRemovedBy similarity
Chaini2 – 9291Protein S100-BPRO_0000143968Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei2 – 21N-acetylserineBy similarity

Keywords - PTMi

Acetylation

Proteomic databases

PRIDEiQ6YNR6.

Interactioni

Subunit structurei

Dimer of either two alpha chains, or two beta chains, or one alpha and one beta chain. The S100B dimer binds two molecules of STK38. Interacts with CACYBP in a calcium-dependent manner. Interacts with ATAD3A; this interaction probably occurs in the cytosol prior to ATAD3A mitochondrial targeting. Interacts with S100A6. The S100B dimer interacts with two molecules of CAPZA1. Interacts with AGER. Interacts with PPP5C (via TPR repeats); the interaction is calcium-dependent and modulates PPP5C activity (By similarity).By similarity

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000001267.

Chemistry

BindingDBiQ6YNR6.

Structurei

3D structure databases

ProteinModelPortaliQ6YNR6.
SMRiQ6YNR6. Positions 1-91.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini13 – 4836EF-hand 1PROSITE-ProRule annotationAdd
BLAST
Domaini49 – 8436EF-hand 2PROSITE-ProRule annotationAdd
BLAST

Sequence similaritiesi

Belongs to the S-100 family.Curated
Contains 2 EF-hand domains.PROSITE-ProRule annotation

Keywords - Domaini

Repeat

Phylogenomic databases

eggNOGiENOG410IYFX. Eukaryota.
ENOG41127J0. LUCA.
HOGENOMiHOG000246968.
HOVERGENiHBG001479.
InParanoidiQ6YNR6.

Family and domain databases

Gene3Di1.10.238.10. 1 hit.
InterProiIPR011992. EF-hand-dom_pair.
IPR018247. EF_Hand_1_Ca_BS.
IPR002048. EF_hand_dom.
IPR028481. S100-B.
IPR001751. S100/CaBP-9k_CS.
IPR013787. S100_Ca-bd_sub.
[Graphical view]
PANTHERiPTHR11639:SF17. PTHR11639:SF17. 1 hit.
PfamiPF00036. EF-hand_1. 1 hit.
PF01023. S_100. 1 hit.
[Graphical view]
SMARTiSM00054. EFh. 1 hit.
SM01394. S_100. 1 hit.
[Graphical view]
SUPFAMiSSF47473. SSF47473. 1 hit.
PROSITEiPS00018. EF_HAND_1. 1 hit.
PS50222. EF_HAND_2. 1 hit.
PS00303. S100_CABP. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q6YNR6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSELEKAMVA LIDVFHQYSG REGDKHKLKK SELKELINNE LSHFLEEIKE
60 70 80 90
QEVVDKVMET LDNDGDGECD FQEFMAFVAM VTTACHEFFE HE
Length:92
Mass (Da):10,713
Last modified:January 23, 2007 - v3
Checksum:i43815AC212A3AD6B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY050568 mRNA. Translation: AAL12231.1.
RefSeqiNP_001076199.1. NM_001082730.1.
UniGeneiOcu.2593.

Genome annotation databases

GeneIDi100009495.
KEGGiocu:100009495.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY050568 mRNA. Translation: AAL12231.1.
RefSeqiNP_001076199.1. NM_001082730.1.
UniGeneiOcu.2593.

3D structure databases

ProteinModelPortaliQ6YNR6.
SMRiQ6YNR6. Positions 1-91.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000001267.

Chemistry

BindingDBiQ6YNR6.

Proteomic databases

PRIDEiQ6YNR6.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi100009495.
KEGGiocu:100009495.

Organism-specific databases

CTDi6285.

Phylogenomic databases

eggNOGiENOG410IYFX. Eukaryota.
ENOG41127J0. LUCA.
HOGENOMiHOG000246968.
HOVERGENiHBG001479.
InParanoidiQ6YNR6.

Family and domain databases

Gene3Di1.10.238.10. 1 hit.
InterProiIPR011992. EF-hand-dom_pair.
IPR018247. EF_Hand_1_Ca_BS.
IPR002048. EF_hand_dom.
IPR028481. S100-B.
IPR001751. S100/CaBP-9k_CS.
IPR013787. S100_Ca-bd_sub.
[Graphical view]
PANTHERiPTHR11639:SF17. PTHR11639:SF17. 1 hit.
PfamiPF00036. EF-hand_1. 1 hit.
PF01023. S_100. 1 hit.
[Graphical view]
SMARTiSM00054. EFh. 1 hit.
SM01394. S_100. 1 hit.
[Graphical view]
SUPFAMiSSF47473. SSF47473. 1 hit.
PROSITEiPS00018. EF_HAND_1. 1 hit.
PS50222. EF_HAND_2. 1 hit.
PS00303. S100_CABP. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Qian Z., Barmack N.H.
    Submitted (AUG-2001) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Tissue: Cerebellum.

Entry informationi

Entry nameiS100B_RABIT
AccessioniPrimary (citable) accession number: Q6YNR6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 12, 2005
Last sequence update: January 23, 2007
Last modified: May 11, 2016
This is version 85 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.