Contacts of the strand formed by residues 125 - 130 (chain A) in PDB entry 1V2E
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with LYS 125 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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103A ASP 3.1 9.8 + - - +
104A GLU* 3.8 27.3 + - + +
105A VAL* 3.1 27.2 + - - +
119A ALA* 5.4 2.5 - - - -
124A ALA* 1.3 78.2 - - - +
126A ALA* 1.3 73.8 + - - +
127A ARG* 3.5 13.4 + - - +
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Residues in contact with ALA 126 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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105A VAL* 3.9 3.6 - - - -
107A VAL* 5.3 3.4 - - + -
116A LEU* 3.8 35.0 - - + -
119A ALA* 5.4 6.3 - - + +
125A LYS* 1.3 87.3 - - - +
127A ARG* 1.3 61.1 + - - +
128A LEU* 3.4 17.9 + - + +
338A LEU* 5.5 4.0 - - + -
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Residues in contact with ARG 127 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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104A GLU* 2.7 49.1 + - - -
105A VAL 3.0 18.3 + - - +
106A VAL* 3.5 18.2 - - + +
107A VAL 3.6 5.3 + - - +
125A LYS* 3.5 16.4 + - - +
126A ALA* 1.3 72.1 + - - +
128A LEU* 1.3 69.0 + - - +
129A VAL* 3.3 13.2 - - - +
147A LYS 5.4 0.8 + - - -
148A ALA* 3.1 38.3 + - + +
150A THR* 3.5 15.5 - - - +
153A THR* 4.8 0.7 - - - +
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Residues in contact with LEU 128 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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107A VAL* 3.3 18.2 - - + +
109A GLU* 3.2 32.5 - - + +
111A PHE* 4.5 7.6 - - + -
116A LEU* 4.0 16.6 - - + -
126A ALA* 3.4 27.0 + - + +
127A ARG* 1.3 77.0 - - - +
129A VAL* 1.3 62.2 + - - +
130A ARG* 4.1 1.6 - - - +
148A ALA* 5.2 2.6 - - - +
338A LEU* 3.4 34.3 - - + -
339A GLU* 5.8 1.8 - - + +
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Residues in contact with VAL 129 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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106A VAL* 3.4 23.6 - - + -
107A VAL 3.4 6.0 + - - +
108A LEU* 3.8 17.0 - - + +
109A GLU 3.3 8.9 + - - +
127A ARG 3.3 11.0 - - - +
128A LEU* 1.3 81.5 - - - +
130A ARG* 1.3 64.4 + - - +
131A LEU* 3.3 18.2 - - - +
140A LEU* 4.9 4.9 - - + -
144A ALA* 4.0 15.5 - - + +
145A LEU* 3.9 27.8 - - + +
148A ALA* 4.2 14.1 - - + -
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Residues in contact with ARG 130 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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109A GLU* 2.4 56.6 + - - +
128A LEU* 4.1 2.0 - - - +
129A VAL* 1.3 75.7 - - - +
131A LEU* 1.3 75.1 + - - +
132A ASP* 3.7 7.3 + - - +
141A ASP* 6.1 1.0 - - - +
144A ALA* 5.7 3.6 - - - +
337A TYR* 3.9 25.1 - - + -
339A GLU* 2.7 37.9 + - - +
340A ASP* 2.9 21.6 + - - +
342A PRO* 5.0 3.5 - - - +
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il