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Reviewed, UniProtKB/Swiss-Prot Q9BRK5 (CAB45_HUMAN)

Last modified June 16, 2009. Version 76. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (4) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    45 kDa calcium-binding protein
Alternative name(s):
    Cab45
    Stromal cell-derived factor 4
      Short name=SDF-4
Gene names
Name: SDF4
Synonyms: CAB45
ORF Names: PSEC0034
OrganismHomo sapiens (Human)
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length362 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

May regulate calcium-dependent activities in the endoplasmic reticulum lumen or post-ER compartment. Isoform 5 may be involved in the exocytosis of zymogens by pancreatic acini By similarity.

Cofactor

Binds calcium By similarity. Isoform 5 binds calcium.

Subunit structure

Isoform 5 interacts with STXBP1; the interaction is enhanced in presence of calcium. Isoform 5 interacts with STX3.

Subcellular location

Isoform 1: Golgi apparatus lumen By similarity.

Isoform 5: Cytoplasm. Note: Isoform 5 colocalizes with STX3 and STXBP1 isoform 2 at the plasma membrane and cell surface blebs.

Tissue specificity

Ubiquitous. Isoform 5 is expressed in pancreas.

Sequence similarities

Belongs to the CREC family.

Contains 6 EF-hand domains.

Sequence caution

The sequence AAF44350.1 differs from that shown. Reason: Frameshift at position 305.

Alternative products

This entry describes 5 isoforms produced by alternative splicing. [Align] [Select]
Isoform 1 (identifier: Q9BRK5-1)

Also known as: Cab45a; Cab45-G;

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Isoform 2 (identifier: Q9BRK5-2)

The sequence of this isoform differs from the canonical sequence as follows:
     1-103: Missing.
Isoform 3 (identifier: Q9BRK5-3)

The sequence of this isoform differs from the canonical sequence as follows:
     193-254: TQEVLENLKD...LDQDGDKQLS → SCAPLSTGSP...GDRPGPGPGR
     255-362: Missing.
Note: No experimental confirmation available.
Isoform 4 (identifier: Q9BRK5-4)

The sequence of this isoform differs from the canonical sequence as follows:
     193-202: TQEVLENLKD → RHGPPGPRAL
     203-362: Missing.
Note: No experimental confirmation available.
Isoform 5 (identifier: Q9BRK5-5)

Also known as: Cab45b; Cab45-C;

The sequence of this isoform differs from the canonical sequence as follows:
     1-232: Missing.
Note: Isoform 5 colocalizes with STX3 and STXBP1 isoform 2 at the plasma membrane and cell surface blebs.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Signal peptide1 – 3636 Potential
Chain37 – 36232645 kDa calcium-binding protein
PRO_0000004156

Regions

Domain98 – 13336EF-hand 1
Domain137 – 17236EF-hand 2
Domain197 – 23236EF-hand 3
Domain233 – 26836EF-hand 4
Domain278 – 31336EF-hand 5
Domain314 – 34936EF-hand 6
Calcium binding111 – 122121 Potential
Calcium binding150 – 161122 Potential
Calcium binding209 – 220123 Potential
Calcium binding246 – 257124 Potential
Calcium binding291 – 302125 Potential
Calcium binding327 – 338126 Potential
Region309 – 36254Necessary for intracellular retention in Golgi apparatus lumen By similarity

Amino acid modifications

Glycosylation401N-linked (GlcNAc...) Potential

Natural variations

Alternative sequence1 – 232232Missing in isoform 5.
VSP_037484
Alternative sequence1 – 103103Missing in isoform 2.
VSP_037485
Alternative sequence193 – 25462TQEVL…DKQLS → SCAPLSTGSPGEPEGPLVPG GQPPCRPAADGGGVPVGPPP RAQPGNAQVHGEGDRPGPGP GR in isoform 3.
VSP_037486
Alternative sequence193 – 20210TQEVLENLKD → RHGPPGPRAL in isoform 4.
VSP_037487
Alternative sequence203 – 362160Missing in isoform 4.
VSP_037488
Alternative sequence255 – 362108Missing in isoform 3.
VSP_037489
Natural variant501N → D: dbSNP rs12745364.
VAR_048659
Natural variant1481A → T in a colorectal cancer sample; somatic mutation. Ref.13
VAR_035461

Experimental info

Mutagenesis2571E → Q: Does not affect calcium-binding.
Mutagenesis3021E → Q: Inhibits calcium-binding.
Mutagenesis3381E → Q: Does not affect calcium-binding.
Sequence conflict70 – 789DGHLNRGFH → ERALKSGFQ in AAL75950. Ref.2
Sequence conflict86 – 9712DLGGF…DAEPR → NLVALIGNGAP in AAL75950. Ref.2
Sequence conflict1171K → R in BAC11563. Ref.5
Sequence conflict1331E → G in BAC11563. Ref.5
Sequence conflict1501D → G in AAL75950. Ref.2
Sequence conflict1881K → R in BAG37898. Ref.6
Sequence conflict1931T → A in BAD96241. Ref.7
Sequence conflict2341L → P in BAD96799. Ref.7
Sequence conflict281 – 2822DR → KK in AAL75950. Ref.2
Sequence conflict2861F → L in AAL75950. Ref.2
Sequence conflict3211Q → R in BAD96799. Ref.7
Sequence conflict322 – 3254MIAV → IRL in AAL75950. Ref.2
Sequence conflict3561R → S in AAL75950. Ref.2

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 (Cab45a) (Cab45-G) [UniParc].

Last modified June 1, 2001. Version 1.
Checksum: 440C6990149AAE2C

FASTA36241,807
        10         20         30         40         50         60 
MVWPWVAMAS RWGPLIGLAP CCLWLLGAVL LMDASARPAN HSSTRERVAN REENEILPPD 

        70         80         90        100        110        120 
HLNGVKLEMD GHLNRGFHQE VFLGKDLGGF DEDAEPRRSR RKLMVIFSKV DVNTDRKISA 

       130        140        150        160        170        180 
KEMQRWIMEK TAEHFQEAME ESKTHFRAVD PDGDGHVSWD EYKVKFLASK GHSEKEVADA 

       190        200        210        220        230        240 
IRLNEELKVD EETQEVLENL KDRWYQADSP PADLLLTEEE FLSFLHPEHS RGMLRFMVKE 

       250        260        270        280        290        300 
IVRDLDQDGD KQLSVPEFIS LPVGTVENQQ GQDIDDNWVK DRKKEFEELI DSNHDGIVTA 

       310        320        330        340        350        360 
EELESYMDPM NEYNALNEAK QMIAVADENQ NHHLEPEEVL KYSEFFTGSK LVDYARSVHE 


EF 

« Hide

Isoform 2.

Checksum: 3745A23BB8FF6D40
Show »

FASTA25930,197
Isoform 3.

Checksum: 77FACCE59B472125
Show »

FASTA25427,826
Isoform 4.

Checksum: 5F208F14504756F7
Show »

FASTA20223,031
Isoform 5 (Cab45b) (Cab45-C).

Checksum: 22545D121BB56827
Show »

FASTA13015,139

References

« Hide 'large scale' references
[1]"Sequence of a human cDNA encoding Cab45, a Ca2+-binding protein with six EF-hand motifs."
Koivu T., Laitinen S., Riento K., Olkkonen V.M.
DNA Seq. 7:217-220(1997) [PubMed: 9254016] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[2]"Cloning of a new human cDNA homologous to Mus musculus calcium-binding protein Cab45b."
Yue P., Yu L., Zhao S.Y.
Submitted (MAR-1999) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[3]"Novel human calcium-binding protein precursor."
Zhang W., Wan T., Yuan Z., Cao X.
Submitted (MAY-1999) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3).
[4]"Identification of a novel calcium-binding protein Cab45 from dendritic cells."
Zhang W., Wan T., Cao X.
Submitted (AUG-1999) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[5]"HRI human cDNA sequencing project."
Ota T., Nishikawa T., Suzuki Y., Kawai-Hio Y., Hayashi K., Ishii S., Saito K., Yamamoto J., Wakamatsu A., Nagai T., Nakamura Y., Nagahari K., Sugano S., Isogai T.
Submitted (MAR-2002) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
Tissue: Teratocarcinoma.
[6]"Complete sequencing and characterization of 21,243 full-length human cDNAs."
Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. expand/collapse author list , Yamamoto J., Saito K., Kawai Y., Isono Y., Nakamura Y., Nagahari K., Murakami K., Yasuda T., Iwayanagi T., Wagatsuma M., Shiratori A., Sudo H., Hosoiri T., Kaku Y., Kodaira H., Kondo H., Sugawara M., Takahashi M., Kanda K., Yokoi T., Furuya T., Kikkawa E., Omura Y., Abe K., Kamihara K., Katsuta N., Sato K., Tanikawa M., Yamazaki M., Ninomiya K., Ishibashi T., Yamashita H., Murakawa K., Fujimori K., Tanai H., Kimata M., Watanabe M., Hiraoka S., Chiba Y., Ishida S., Ono Y., Takiguchi S., Watanabe S., Yosida M., Hotuta T., Kusano J., Kanehori K., Takahashi-Fujii A., Hara H., Tanase T.-O., Nomura Y., Togiya S., Komai F., Hara R., Takeuchi K., Arita M., Imose N., Musashino K., Yuuki H., Oshima A., Sasaki N., Aotsuka S., Yoshikawa Y., Matsunawa H., Ichihara T., Shiohata N., Sano S., Moriya S., Momiyama H., Satoh N., Takami S., Terashima Y., Suzuki O., Nakagawa S., Senoh A., Mizoguchi H., Goto Y., Shimizu F., Wakebe H., Hishigaki H., Watanabe T., Sugiyama A., Takemoto M., Kawakami B., Yamazaki M., Watanabe K., Kumagai A., Itakura S., Fukuzumi Y., Fujimori Y., Komiyama M., Tashiro H., Tanigami A., Fujiwara T., Ono T., Yamada K., Fujii Y., Ozaki K., Hirao M., Ohmori Y., Kawabata A., Hikiji T., Kobatake N., Inagaki H., Ikema Y., Okamoto S., Okitani R., Kawakami T., Noguchi S., Itoh T., Shigeta K., Senba T., Matsumura K., Nakajima Y., Mizuno T., Morinaga M., Sasaki M., Togashi T., Oyama M., Hata H., Watanabe M., Komatsu T., Mizushima-Sugano J., Satoh T., Shirai Y., Takahashi Y., Nakagawa K., Okumura K., Nagase T., Nomura N., Kikuchi H., Masuho Y., Yamashita R., Nakai K., Yada T., Nakamura Y., Ohara O., Isogai T., Sugano S.
Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1; 2 AND 4).
Tissue: Brain and Tongue.
[7]Suzuki Y., Sugano S., Totoki Y., Toyoda A., Takeda T., Sakaki Y., Tanaka A., Yokoyama S.
Submitted (APR-2005) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
Tissue: Adipose tissue.
[8]"The DNA sequence and biological annotation of human chromosome 1."
Gregory S.G., Barlow K.F., McLay K.E., Kaul R., Swarbreck D., Dunham A., Scott C.E., Howe K.L., Woodfine K., Spencer C.C.A., Jones M.C., Gillson C., Searle S., Zhou Y., Kokocinski F., McDonald L., Evans R., Phillips K. expand/collapse author list , Atkinson A., Cooper R., Jones C., Hall R.E., Andrews T.D., Lloyd C., Ainscough R., Almeida J.P., Ambrose K.D., Anderson F., Andrew R.W., Ashwell R.I.S., Aubin K., Babbage A.K., Bagguley C.L., Bailey J., Beasley H., Bethel G., Bird C.P., Bray-Allen S., Brown J.Y., Brown A.J., Buckley D., Burton J., Bye J., Carder C., Chapman J.C., Clark S.Y., Clarke G., Clee C., Cobley V., Collier R.E., Corby N., Coville G.J., Davies J., Deadman R., Dunn M., Earthrowl M., Ellington A.G., Errington H., Frankish A., Frankland J., French L., Garner P., Garnett J., Gay L., Ghori M.R.J., Gibson R., Gilby L.M., Gillett W., Glithero R.J., Grafham D.V., Griffiths C., Griffiths-Jones S., Grocock R., Hammond S., Harrison E.S.I., Hart E., Haugen E., Heath P.D., Holmes S., Holt K., Howden P.J., Hunt A.R., Hunt S.E., Hunter G., Isherwood J., James R., Johnson C., Johnson D., Joy A., Kay M., Kershaw J.K., Kibukawa M., Kimberley A.M., King A., Knights A.J., Lad H., Laird G., Lawlor S., Leongamornlert D.A., Lloyd D.M., Loveland J., Lovell J., Lush M.J., Lyne R., Martin S., Mashreghi-Mohammadi M., Matthews L., Matthews N.S.W., McLaren S., Milne S., Mistry S., Moore M.J.F., Nickerson T., O'Dell C.N., Oliver K., Palmeiri A., Palmer S.A., Parker A., Patel D., Pearce A.V., Peck A.I., Pelan S., Phelps K., Phillimore B.J., Plumb R., Rajan J., Raymond C., Rouse G., Saenphimmachak C., Sehra H.K., Sheridan E., Shownkeen R., Sims S., Skuce C.D., Smith M., Steward C., Subramanian S., Sycamore N., Tracey A., Tromans A., Van Helmond Z., Wall M., Wallis J.M., White S., Whitehead S.L., Wilkinson J.E., Willey D.L., Williams H., Wilming L., Wray P.W., Wu Z., Coulson A., Vaudin M., Sulston J.E., Durbin R.M., Hubbard T., Wooster R., Dunham I., Carter N.P., McVean G., Ross M.T., Harrow J., Olson M.V., Beck S., Rogers J., Bentley D.R.
Nature 441:315-321(2006) [PubMed: 16710414] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[9]Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. expand/collapse author list , Yooseph S., Lu F., Nusskern D.R., Shue B.C., Zheng X.H., Zhong F., Delcher A.L., Huson D.H., Kravitz S.A., Mouchard L., Reinert K., Remington K.A., Clark A.G., Waterman M.S., Eichler E.E., Adams M.D., Hunkapiller M.W., Myers E.W., Venter J.C.
Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[10]"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
The MGC Project Team
Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
Tissue: Brain, Pancreas and Prostate.
[11]"A cytosolic splice variant of Cab45 interacts with Munc18b and impacts on amylase secretion by pancreatic acini."
Lam P.P., Hyvaerinen K., Kauppi M., Cosen-Binker L., Laitinen S., Keraenen S., Gaisano H.Y., Olkkonen V.M.
Mol. Biol. Cell 18:2473-2480(2007) [PubMed: 17442889] [Abstract]
Cited for: INTERACTION WITH STX3 AND STXBP1, SUBCELLULAR LOCATION, ALTERNATIVE SPLICING (ISOFORM 5), MUTAGENESIS OF GLU-257; GLU-302 AND GLU-338, TISSUE SPECIFICITY.
[12]Colinge J., Superti-Furga G., Bennett K.L.
Submitted (OCT-2008) to UniProtKB
Cited for: IDENTIFICATION [LARGE SCALE ANALYSIS], MASS SPECTROMETRY.
[13]"The consensus coding sequences of human breast and colorectal cancers."
Sjoeblom T., Jones S., Wood L.D., Parsons D.W., Lin J., Barber T.D., Mandelker D., Leary R.J., Ptak J., Silliman N., Szabo S., Buckhaults P., Farrell C., Meeh P., Markowitz S.D., Willis J., Dawson D., Willson J.K.V. expand/collapse author list , Gazdar A.F., Hartigan J., Wu L., Liu C., Parmigiani G., Park B.H., Bachman K.E., Papadopoulos N., Vogelstein B., Kinzler K.W., Velculescu V.E.
Science 314:268-274(2006) [PubMed: 16959974] [Abstract]
Cited for: VARIANT [LARGE SCALE ANALYSIS] THR-148.

Cross-references

Sequence databases

L79912 mRNA. Translation: AAL40084.1.
AF132749 mRNA. Translation: AAL75950.1.
AF153686 mRNA. Translation: AAD51612.1.
AF178986 mRNA. Translation: AAF44350.1. Frameshift.
AK075352 mRNA. Translation: BAC11563.1.
AK027277 mRNA. Translation: BAB55012.1.
AK299810 mRNA. Translation: BAG61683.1.
AK315517 mRNA. Translation: BAG37898.1.
AK222521 mRNA. Translation: BAD96241.1.
AK223079 mRNA. Translation: BAD96799.1.
AL162741 Genomic DNA. Translation: CAI23251.1.
CH471183 Genomic DNA. Translation: EAW56273.1.
BC006211 mRNA. Translation: AAH06211.1.
BC007625 mRNA. Translation: AAH07625.1.
BC008917 mRNA. Translation: AAH08917.1.
BC011244 mRNA. Translation: AAH11244.1.
BC022375 mRNA. Translation: AAH22375.1.
IPIIPI00009794.
IPI00106646.
IPI00384644.
RefSeqNP_057260.2.
NP_057631.1.
UniGeneHs.42806

3D structure databases

ModBaseSearch...

PTM databases

PhosphoSiteQ9BRK5.

Proteomic databases

PRIDEQ9BRK5.

Genome annotation databases

EnsemblENSG00000078808. Homo sapiens. [Contig view]
GeneID51150.
KEGGhsa:51150.

Organism-specific databases

GeneCardsGC01M001143.
HGNCHGNC:24188. SDF4.
HPACAB015227.
PharmGKBPA142670940.
GenAtlasSearch...

Phylogenomic databases

HOGENOMQ9BRK5.
HOVERGENQ9BRK5.
OMAQ9BRK5. HDGIVTM.

Gene expression databases

ArrayExpressQ9BRK5.
BgeeQ9BRK5.
CleanExHS_SDF4.
GermOnlineENSG00000078808. Homo sapiens.

Family and domain databases

InterProIPR011992. EF-Hand_type.
IPR018247. EF_HAND_1.
IPR018249. EF_HAND_2.
IPR002048. EF_hand_Ca_bd.
[Graphical view]
Gene3DG3DSA:1.10.238.10. EF-Hand_type. 2 hits.
ProDomPD000012. EF-hand. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SMARTSM00054. EFh. 5 hits.
[Graphical view]
PROSITEPS00018. EF_HAND_1. 5 hits.
PS50222. EF_HAND_2. 5 hits.
[Graphical view]
ProtoNetSearch...

Other Resources

NextBio54034.

Entry information

Entry nameCAB45_HUMAN
AccessionPrimary (citable) accession number: Q9BRK5
Secondary accession number(s): B1AME5 expand/collapse secondary AC list , B2RDF1, B4DSM1, Q53G52, Q53HQ9, Q8NBQ3, Q96AA1, Q9NZP7, Q9UN53
Entry history
Integrated into UniProtKB/Swiss-Prot: May 27, 2002
Last sequence update: June 1, 2001
Last modified: June 16, 2009
This is version 76 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectHPI (Human Proteome Initiative)

Relevant documents

Human chromosome 1

Human chromosome 1: entries, gene names and cross-references to MIM

Human entries with polymorphisms or disease mutations

List of human entries with polymorphisms or disease mutations

Human polymorphisms and disease mutations

Index of human polymorphisms and disease mutations

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents