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UniProtKB/Swiss-Prot P02788: Variant p.Ala29Thr

Lactotransferrin
Gene: LTF
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Variant information Variant position: help 29
Type of variant: help LB/B
Residue change: help From Alanine (A) to Threonine (T) at position 29 (A29T, p.Ala29Thr).
Physico-chemical properties: help Change from small size and hydrophobic (A) to medium size and polar (T)
BLOSUM score: help 0
Polymorphism: help The sequence shown corresponds to the reference genome sequence and is likely to represent the minor allele, whereas most publications refer to the longer sequence containing variant Arg-22 ins. Insertion of the additional arginine in variant Arg-22 ins creates an N-terminal basic cluster of four arginines, all of which appear to be important for the full functionality of the protein, including bactericidal and antifungal activities as well as binding to glycosaminoglycans, pspA, LPS, lysozyme and DNA.
Other resources: help


Sequence information Variant position: help 29
Protein sequence length: help 710
Location on the sequence: help LFLGALGLCLAGRRRSVQWC A VSQPEATKCFQWQRNMRKVR
Residue conservation: help
Human                         LFLGALGLCLAGRRRSVQWCAVSQPEATKCFQWQRNMRKVR

Mouse                         IFLEALGLCLA-KATTVQWCAVSNSEEEKCLRWQNEMRKVG

Pig                           LFLGTLGLCLAAPKKGVRWCVISTAEYSKCRQWQSKIRRTN

Bovine                        LSLGALGLCLAAPRKNVRWCTISQPEWFKCRRWQWRMKKLG

Goat                          LSLGALGLCLAAPRKNVRWCAISLPEWSKCYQWQRRMRKLG

Sequence annotation in neighborhood: help
TypePositionsDescription
Chain 20 – 710 Lactotransferrin
Peptide 20 – 67 Lactoferricin-H
Domain 25 – 352 Transferrin-like 1
Region 20 – 29 Bactericidal and antifungal activity
Site 23 – 23 Interaction with PspA
Site 32 – 32 Interaction with PspA
Disulfide bond 28 – 64
Alternative sequence 1 – 44 Missing. In isoform DeltaLf.
Beta strand 24 – 31



Literature citations
cDNA cloning and sequence analysis of human lactoferrin.
Cheng H.; Chen X.Z.; Huan L.D.;
Sheng Wu Gong Cheng Xue Bao 17:385-387(2001)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANTS ARG-22 INS; THR-29; ARG-47 AND ASP-579; Crystal structure of human seminal diferric lactoferrin at 3.4 Angstrom resolution.
Kumar J.; Weber W.; Munchau S.; Yadav S.; Singh S.B.; Saravanan K.; Paramasivam M.; Sharma S.; Kaur P.; Bhushan A.; Srinivasan A.; Betzel C.; Singh T.P.;
Indian J. Biochem. Biophys. 40:14-21(2003)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); X-RAY CRYSTALLOGRAPHY (3.40 ANGSTROMS) OF 22-710 IN COMPLEX WITH IRON AND CARBONATE; FUNCTION; VARIANTS ARG-22 INS; THR-29; ARG-47 AND ASP-579; One of two human lactoferrin variants exhibits increased antibacterial and transcriptional activation activities and is associated with localized juvenile periodontitis.
Velliyagounder K.; Kaplan J.B.; Furgang D.; Legarda D.; Diamond G.; Parkin R.E.; Fine D.H.;
Infect. Immun. 71:6141-6147(2003)
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); PROTEIN SEQUENCE OF 20-30; FUNCTION; VARIANTS ARG-22 INS; THR-29 AND ARG-47; Submission
Conneely O.M.;
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANTS ARG-22 INS; THR-29 AND ARG-47; Submission
Shi Y.-Q.; Zhang Y.; Zheng Y.-M.;
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1); VARIANTS ARG-22 INS; THR-29; ARG-47 AND ASP-579; Mutations in ELA2 and LTF genes.
Allayous C.; Marianne-Pepin T.;
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]; VARIANTS ARG-22 INS; THR-29 AND ARG-47; Familial subepithelial corneal amyloidosis (gelatinous drop-like corneal dystrophy): exclusion of linkage to lactoferrin gene.
Klintworth G.K.; Sommer J.R.; Obrian G.; Han L.; Ahmed M.N.; Qumsiyeh M.B.; Lin P.-Y.; Basti S.; Reddy M.K.; Kanai A.; Hotta Y.; Sugar J.; Kumaramanickavel G.; Munier F.; Schorderet D.F.; El Matri L.; Iwata F.; Kaiser-Kupfer M.; Nagata M.; Nakayasu K.; Hejtmancik J.F.; Teng C.T.;
Mol. Vis. 4:31-32(1998)
Cited for: VARIANTS THR-29 AND ARG-47;
Disclaimer: Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. They are not in any way intended to be used as a substitute for professional medical advice, diagnostic, treatment or care.