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Table 1 Irregular LRR motifs observed in the known structures of LRR-containing proteins

From: Comparative sequence analysis of leucine-rich repeats (LRRs) within vertebrate toll-like receptors

Proteina

Nb

Irregular LRRs

PDB

  

Position

Amino acid sequencec

  
   

LxxLxLxxNxL

  

TLR3

25

LRR1

H EVADCSHL KL

TQVPDDLPTN

1ZIW

  

LRR9

LFGLFLNNV QL

GPSLTEKLCLELANTS

/2A0Z

  

LRR13

VRYLNLKRSFT

KQSISLASLPKIDDFSFQWLKC

 
  

LRR15

LKYLSLSNSFT

SLRTLTNETFVSLAHSP

 
  

LRR18

IFEIYLSYNKY

LQLTRNSFALVPS

 
  

LRR19

LQRLMLRRV AL

KNVDSSPSPFQPLRN

 

CD14

11

LRR1

AADVELYGG GR

SLEYLLKRVDTEADLGQFTDIIKSLS

1WWL

  

LRR2

LKRLTVRAA RI

PSRILFGALRVLGISG

 
  

LRR3

LQELTLENL EV

TGTAPPPLLEATGPD

 
  

LRR4

LNILNLRNV SW

ATRDAWLAELQQWLKPG

 
  

LRR5

LKVLSIAQA HS

LNFSCEQVRVFPA

 
  

LRR7

LQVLALRNA GM

ETPSGVCSALAAARVQ

 

Slit

6

LRR1

G TTVDCTGR GL

KEIPRDIPLH

1W8A

Lingo-1

14

LRR8

LIVLRLRHL NI

NAIRDYSFKRLYR

2ID5

  

LRR9

LKVLEISHW PY

LDTMTPNCLYGLN

 

Decorin

12

LRR1

LRVVQCSDL GL

EKVPKDLPPD

1XCD

Biglycan

12

LRR1

LRVVQCSDL GL

KAVPKEISPD

2FT3

FSHr

10

LRR6

LQKVLLDIQ DN

INIHTIERNSFVGLSFE

1XWD

  

LRR7

S VILWLNKNGI

QEIHNCAFNGTQ

 
  

LRR9

P VILDISRTRI

HSLPSYGLEN

 

Inl-A

16

LRR1

VTTLQADRL GI

KSIDGLEYLNN

1O6V

Inl-C

7

LRR1

VQNFNG DNSNI

QSLAGMQFFTN

1XEU

  

LRR7

VNWIDLTGQ KC

VNEPVKYQPEL

 

U2snRNPA'

5

LRR1

DRELDLRGY KI

PVIRNLGATLDQ

1A9N

RabGGTα

5

LRR1

VRVLHLAHK DL

TVLCHLEQLLL

1DCE

DLC1

6

LRR1

K VELHG MIP PI

EKMDATLSTLKA

1DS9

TAP

4

LRR1

Q QALDLKGL RS

DPDLVAQNIDVVLNRRSCMAATLRII

1FT8

    

EENIPE

 

PGIP

10

LRR1

VNNLDLSGL NL

PKPYPIPSSLANLPYL

1OGQ

YoPM

16

LRR1

AHELELNNL GL

SSLPELPPH

1G9U

  

LRR16

VEDLRMNSE RV

DPYEFAHETTDKLEDDVFE

 

hRI

16

LRR15

LEQLVLYDI YW

SEEMEDRLQALEKDKP

1Z7X

pRI

17

LRR1

W_ NLDIHCE QL

SDARWTELPLQQ

2BNH

RanGAP

10

LRR2

LEIAEFSDI FT

GRVKDEIPEALRLLLQALLKCPK

1YRG

cTmod

5

LRR1

LEEVNLNNI MN

IPVPTLKACAEALKTNTY

1IO0

  

LRR2

VKKFSIVGTRS

NDPVAFALAEMLKVNNT

 
  

LRR4

LIELRIDNQ SQ

PLGNNVEMEIANMLEKNTT

 
  

LRR5

LLKFGY HFTQQ

PRLRASNAMMNNNDLVRK

 

ceTmod

5

LRR1

LKEVNINNM KR

VSKERIRSLIEAACNSKH

1PGV

  

LRR4

IVEFKADNQ RQ

SVLGNQVEMDMMMAIEENES

 
  

LRR5

LLRVGISFA SM

EARHRVSEALERNYERVRL

 

Skp2

11

LRR1

WQTLDLTGK NL

HPDVTGRLLSQG

1FQV

  

LRR4

LQNLSLWFL RL

SDPIVNTLAKNSN

/2ASS

  

LRR7

ITQLNLSGY RK

NLQKSDLSTLVRRCPN

 
  

LRR10

LKTLQVFGI VP

DGTLQLLKEA

 
  1. aFSHr, follicle-stimulating hormone receptor; Inl-A, internalin A; Inl -C, internalin C; U2snRNPA', spliceosomal U2A' protein; RabGGTα, rab geranylgeranyltransferase α-subunit; DLC-1, Chlamydomonas outer arm dynein light chain 1; TAP, mRNA export factor; PGIP, polygalacturonase-inhibiting protein; RI, ribonuclease inhibitor, RanGAP, GTPase-activating protein; Tmod, tropomodulin; Skp2, S-phase kinase-associated protein 2; h, human, p, pig; ce, Caenorhabditis elegans: b N; the repeat number of LRRs identified in individual known LRR structures.c HCS, highly conserved segment of LRR; VS, variable segment of LRR. Residues in boldface cause irregular motif.