Score = 76.6 bits (187), Expect = 4e-14, Method: Compositional matrix adjust.
Identities = 35/66 (53%), Positives = 45/66 (68%)
Query: 30 RTSSKSSWPELVGVKGEVAAEIIMRENGKVVAIIVKEGFEVTMDYRCDRVWVWVDHHGIV 89
R K++WPELVG G +AA + REN V AI++KEG +T D+RCDRVWV V+ HG+V
Sbjct: 3 RCPGKNAWPELVGKSGNMAAATVERENRNVHAIVLKEGSAMTKDFRCDRVWVIVNDHGVV 62
Query: 90 KYTPRI 95
P I
Sbjct: 63 TSVPHI 68
In vitro, strong inhibitor of bovine beta-trypsin, weak inhibitor of alpha-chymotrypsin, subtilisin BPN', subtilisin Carlsberg and cathepsin G. Linum usitatissimum (taxid: 4006)
>sp|P19873|ITH5_CUCMA Inhibitor of trypsin and hageman factor OS=Cucurbita maxima PE=1 SV=1
Competitively inhibits Glu S.griseus protease by forming probably a 1:1 complex. BGIA has no inhibitory activity against 2 other acidic amino acid-specific endopeptidases (S.aureus protease V8 and B.subtilis proteinase), chymotrypsin, trypsin, pancreatic elastase, and papain, although subtilisin Carlsberg was strongly inhibited.
Score = 70.5 bits (171), Expect = 3e-12, Method: Compositional matrix adjust.
Identities = 33/63 (52%), Positives = 42/63 (66%)
Query: 34 KSSWPELVGVKGEVAAEIIMRENGKVVAIIVKEGFEVTMDYRCDRVWVWVDHHGIVKYTP 93
K+SWPELVG G++AA II EN V AI+VKEG +T D +RV V+VD + +V P
Sbjct: 8 KNSWPELVGTNGDIAAGIIQTENANVKAIVVKEGLPITQDLNFNRVRVFVDENRVVTQVP 67
Query: 94 RIG 96
IG
Sbjct: 68 AIG 70
Inhibitor of serine proteases, strongly inhibits subtilisin A and weakly inhibits trypsin. Does not inhibit chymotrypsin, papain, pepsin, pronase E, protease type XIII and thermolysin. HPI-1 inhibits subtilisin A with an Ki of 0.21 nM. HPI-2a inhibits subtilisin A with an Ki of 0.08 nM. HPI-2b inhibits subtilisin A with an Ki of 0.1 nM.
Score = 56.2 bits (134), Expect = 5e-08, Method: Compositional matrix adjust.
Identities = 34/82 (41%), Positives = 45/82 (54%), Gaps = 6/82 (7%)
Query: 21 KKESMEDYCRT-SSKSSWPELVGVKGEVAAEIIMRENGKVVAIIVKEGFEV----TMDYR 75
K E + RT K SWPELVG KG+ AA I +EN V A++ + T D+R
Sbjct: 5 KVECLTTGVRTYVGKQSWPELVGTKGKTAAATIDKENTHVTAVLCPPLTTLAACRTFDFR 64
Query: 76 CDRVWVWVDH-HGIVKYTPRIG 96
CDRV V ++ G+V TP +G
Sbjct: 65 CDRVRVLINRIGGVVTKTPTVG 86
Serine protease inhibitor which is active against trypsin. Displays strong antifungal activity against a number of phytopathogenic fungi including M.melonis, A.cucumerina, A.solani, C.glaeosporioides and P.capsici.
>gi|255559973|ref|XP_002521005.1| Inhibitor of trypsin and hageman factor, putative [Ricinus communis] gi|223539842|gb|EEF41422.1| Inhibitor of trypsin and hageman factor, putative [Ricinus communis]
Score = 98.6 bits (244), Expect = 4e-19, Method: Compositional matrix adjust.
Identities = 49/72 (68%), Positives = 54/72 (75%)
Query: 25 MEDYCRTSSKSSWPELVGVKGEVAAEIIMRENGKVVAIIVKEGFEVTMDYRCDRVWVWVD 84
M D C K SWPELVG+KGEVA EII++EN KV A IVKEG VTMD+RCDRV VWVD
Sbjct: 1 MADICTDPGKRSWPELVGIKGEVAVEIIVQENPKVGATIVKEGMMVTMDFRCDRVRVWVD 60
Query: 85 HHGIVKYTPRIG 96
+GIVK P IG
Sbjct: 61 KYGIVKDVPHIG 72
Source: Ricinus communis
Species: Ricinus communis
Genus: Ricinus
Family: Euphorbiaceae
Order: Malpighiales
Class:
Phylum: Streptophyta
Superkingdom: Eukaryota
>gi|224114800|ref|XP_002316860.1| predicted protein [Populus trichocarpa] gi|224117040|ref|XP_002317459.1| predicted protein [Populus trichocarpa] gi|222859925|gb|EEE97472.1| predicted protein [Populus trichocarpa] gi|222860524|gb|EEE98071.1| predicted protein [Populus trichocarpa]
>gi|357441047|ref|XP_003590801.1| Inhibitor of trypsin and hageman factor [Medicago truncatula] gi|355479849|gb|AES61052.1| Inhibitor of trypsin and hageman factor [Medicago truncatula]
Score = 97 (39.2 bits), Expect = 3.9e-05, P = 3.9e-05
Identities = 28/67 (41%), Positives = 34/67 (50%)
Query: 34 KSSWPELVGVKGEVAAEIIMRENGKVVAIIVKEGFEVTMDYRCDRVWVWVD----HHGIV 89
K WPEL GVKG A II +N KVV +I+ + V C+RV V V +G V
Sbjct: 30 KVDWPELNGVKGLEAKRIIEHDNPKVVVVIIPDDVAVLAVNCCNRVIVRVPVNNCPNGPV 89
Query: 90 KYTPRIG 96
P IG
Sbjct: 90 SNFPHIG 96
Parameters:
V=100
filter=SEG
E=0.001
ctxfactor=1.00
Query ----- As Used ----- ----- Computed ----
Frame MatID Matrix name Lambda K H Lambda K H
+0 0 BLOSUM62 0.322 0.137 0.436 same same same
Q=9,R=2 0.244 0.0300 0.180 n/a n/a n/a
Query
Frame MatID Length Eff.Length E S W T X E2 S2
+0 0 96 85 0.00091 102 3 11 22 0.43 29
29 0.46 30
Statistics:
Database: /share/blast/go-seqdb.fasta
Title: go_20130330-seqdb.fasta
Posted: 5:47:42 AM PDT Apr 1, 2013
Created: 5:47:42 AM PDT Apr 1, 2013
Format: XDF-1
# of letters in database: 169,044,731
# of sequences in database: 368,745
# of database sequences satisfying E: 6
No. of states in DFA: 600 (64 KB)
Total size of DFA: 125 KB (2078 KB)
Time to generate neighborhood: 0.00u 0.00s 0.00t Elapsed: 00:00:00
No. of threads or processors used: 24
Search cpu time: 8.48u 0.14s 8.62t Elapsed: 00:00:00
Total cpu time: 8.48u 0.14s 8.62t Elapsed: 00:00:00
Start: Fri May 10 18:06:46 2013 End: Fri May 10 18:06:46 2013
Inhibitor_I78: Peptidase inhibitor I78 family; Int
99.68
>PF00280 potato_inhibit: Potato inhibitor I family; InterPro: IPR000864 Peptide proteinase inhibitors can be found as single domain proteins or as single or multiple domains within proteins; these are referred to as either simple or compound inhibitors, respectively
In many cases they are synthesised as part of a larger precursor protein, either as a prepropeptide or as an N-terminal domain associated with an inactive peptidase or zymogen. This domain prevents access of the substrate to the active site. Removal of the N-terminal inhibitor domain either by interaction with a second peptidase or by autocatalytic cleavage activates the zymogen. Other inhibitors interact direct with proteinases using a simple noncovalent lock and key mechanism; while yet others use a conformational change-based trapping mechanism that depends on their structural and thermodynamic properties. This family of proteinase inhibitors belong to MEROPS inhibitor family I13, clan IG. They inhibit peptidases of the S1 (IPR001254 from INTERPRO) and S8 (IPR000209 from INTERPRO) families []. Potato inhibitor type I sequences are not solely restricted to potatoes but are found in other plant species for example: barley endosperm chymotrypsin inhibitor [], and pumpkin trypsin inhibitor. Exceptions are found in leech's, e.g.Hirudo medicinalis (Medicinal leech), but not other metazoa []. In general, the proteins have retained a specificity towards chymotrypsin-like and elastase-like proteases []. Structurally these inhibitors are small (60 to 90 residues) and in contrast with other families of protease inhibitors, they lack disulphide bonds. The inhibitor is a wedge-shaped molecule, its pointed edge formed by the protease-binding loop, which contains the scissile bond. The loop binds tightly to the protease active site, subsequent cleavage of the scissile bond causing inhibition of the enzyme []. The inhibitors (designated type I and II) are synthesised in potato tubers, increasing in concentration as the tuber develops. Synthesis of the inhibitors throughout the plant is also induced by leaf damage; this systemic response being triggered by the release of a putative plant hormone []. Examples found in the bacteria and archaea are probable false positives.; GO: 0004867 serine-type endopeptidase inhibitor activity, 0009611 response to wounding; PDB: 1TEC_I 1SBN_I 1ACB_I 1EGP_A 3TEC_I 2SEC_I 1EGL_A 2TEC_I 1SIB_I 1MEE_I ....
>PF11720 Inhibitor_I78: Peptidase inhibitor I78 family; InterPro: IPR021719 This family includes Aspergillus elastase inhibitor and belongs to MEROPS peptidase inhibitor family I78
>pdb|3CI2|A Chain A, Refinement Of The Three-Dimensional Solution Structure Of Barley Serine Proteinase Inhibitor 2 And Comparison With The Structures In Crystals Length = 66
>pdb|1CIS|A Chain A, Context Dependence Of Protein Secondary Structure Formation. The Three-Dimensional Structure And Stability Of A Hybrid Between Chymotrypsin Inhibitor 2 And Helix E From Subtilisin Carlsberg Length = 66
class: Alpha and beta proteins (a+b)
fold: CI-2 family of serine protease inhibitors
superfamily: CI-2 family of serine protease inhibitors
family: CI-2 family of serine protease inhibitors
domain: Eglin C
species: Leech (Hirudo medicinalis) [TaxId: 6421]
class: Alpha and beta proteins (a+b)
fold: CI-2 family of serine protease inhibitors
superfamily: CI-2 family of serine protease inhibitors
family: CI-2 family of serine protease inhibitors
domain: Eglin C
species: Leech (Hirudo medicinalis) [TaxId: 6421]