Contacts of the helix formed by residues 127 - 132 (chain B) in PDB entry 6GHM
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 CYS 127 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122B ARG* 4.2 5.4 - - - +
124B ASN 3.4 17.9 - - - +
125B HIS 3.0 2.6 + - - -
126B GLU* 1.3 76.5 - - - +
128B ALA* 1.3 66.4 + - - +
129B SER* 3.4 31.2 - - - -
130B ILE* 3.1 12.1 + - - +
131B ASN* 2.9 30.6 + - - +
156B PHE* 4.3 1.9 - - - -
157B ASN* 5.4 0.2 - - - -
194B ASP* 6.4 0.4 - - - -
195B VAL* 4.0 31.9 - - + -
206B TRP* 6.2 0.2 - - - -
407B NHE 4.5 7.0 - - - -
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Residues in contact with ALA 128 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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127B CYS* 1.3 72.7 - - - +
129B SER* 1.3 62.5 + - - +
131B ASN* 4.0 8.7 - - - +
132B ARG* 3.0 26.7 + - - +
149B TRP* 3.6 15.2 - - + -
153B THR* 3.7 36.8 + - + +
157B ASN* 5.3 2.4 + - - -
194B ASP* 5.7 3.6 - - - +
405B GOL 3.7 18.7 + - - +
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Residues in contact with SER 129 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
127B CYS* 3.2 13.5 - - - -
128B ALA* 1.3 79.7 - - - +
130B ILE* 1.3 62.7 + - - +
132B ARG* 3.7 9.9 - - - +
133B ILE* 4.0 10.6 - - - +
405B GOL 3.1 21.6 + - - -
407B NHE 3.2 45.9 - - - +
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Residues in contact with ILE 130 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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95B ASP* 3.8 0.2 - - - +
124B ASN* 3.5 21.1 - - - +
125B HIS* 3.3 41.5 - - + +
127B CYS* 3.1 12.7 + - - +
129B SER* 1.3 76.5 - - - +
131B ASN* 1.3 58.2 + - - +
132B ARG 3.0 4.5 - - - -
133B ILE* 3.0 18.8 + - + +
134B TYR* 3.2 35.2 + - + -
206B TRP* 3.7 32.8 - - + -
407B NHE 3.8 17.3 - - + -
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Residues in contact with ASN 131 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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94B VAL* 4.1 1.3 - - + +
95B ASP* 3.1 30.7 - - - +
125B HIS 3.0 20.2 + - - +
127B CYS 2.9 25.3 + - - +
128B ALA* 4.0 1.3 - - - +
130B ILE* 1.3 73.9 - - - +
132B ARG* 1.3 63.7 + - - +
133B ILE 3.3 0.4 - - - -
134B TYR 4.2 0.4 - - - +
136B PHE* 3.5 15.3 + - + -
137B TYR 2.9 27.2 + - - -
149B TRP* 2.7 35.6 + - - +
153B THR* 5.0 1.0 + - - -
156B PHE* 3.7 24.2 - - - -
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Residues in contact with ARG 132 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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128B ALA 3.0 21.7 + - - +
129B SER* 3.7 8.5 - - - +
130B ILE 3.0 1.2 - - - -
131B ASN* 1.3 78.9 + - - +
133B ILE* 1.3 69.5 + - + +
135B GLY 5.0 0.6 + - - -
137B TYR* 3.4 63.4 + - - +
138B ASP* 4.8 7.5 + - - +
149B TRP* 4.0 11.4 - - + -
405B GOL 4.4 9.2 - - - +
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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